NL2007269C2

NL2007269C2 - Climate control system.

Info

Publication number: NL2007269C2
Application number: NL2007269A
Authority: NL
Inventors: Antonius Henricus Hubertus Schmitz
Original assignee: Autarkis B V
Priority date: 2011-08-01
Filing date: 2011-08-16
Publication date: 2013-02-04
Also published as: WO2013019113A1; EP2739912A1

Description

Nr. P100039NL01 Climate control system

TECHNICAL FIELD OF THE INVENTION

The invention relates to climate system. The invention relates to a climate 5 unit for such a climate unit. The invention further relates to a latent heat storage heat exchanger assembly for use in a climate system. The invention relates to a latent heat storage heat exchanger for use in a climate system. The invention relates to the use of such a climate control system for controlling the temperature in a building. Further, the invention relates to a method of manufacturing a latent heat storage heat exchanger, the use 10 of a latent heat storage heat exchanger in a climate control system. The invention further relates to an insert for a latent heat storage heat exchanger, and to a latent heat storage heat exchanger provided with such an insert.

BACKGROUND OF THE INVENTION

15 Climate control systems for buildings are generally known. Some of said climate control systems use a phase change material to provide latent heat storage. W02003102484A2 discloses a climate control unit located in the vicinity of the ceiling. The climate control unit comprises plate shaped latent heat accumulator bodies. The plate shaped bodies are parallel positioned at a predetermined distance with respect to each other 20 to form an air channel between adjacent plate shaped bodies. The plate shaped bodies comprise a cavity filled with a phase change material. A phase change material (PCM) is a substance with a high latent heat of fusion which, melting and solidifying at a certain temperature, is capable of storing and releasing large amounts of energy. Heat is absorbed or released when the material changes from solid to liquid and vice versa. Bodies filled 25 with PCMs are classified as latent heat storage (LHS) units.

The plate shaped bodies have to be manufactured separately. Subsequently, the plate shaped bodies are positioned parallel in the climate control unit. The plate shaped bodies together form a latent heat storage heat exchange device. Such a latent heat storage heat exchange device comprises a plurality of plate shaped elements. The plate shaped 30 elements are parallel positioned at a predetermined distance with respect to each other to form an air channel between adjacent plate shaped elements. Each element comprises a 2 cavity filled with a phase change material. The number of individual plate shaped elements mainly defines the costs of a climate control unit. Consequently, relative large plate shaped elements are used in climate control units instead of smaller ones.

In “nieuwe generatie autarkische datahotels” , RCC Total Energy, No 5 5 december 2009, Harry Schmitz, a data hotel is disclosed in which single containers are provided with parts of a data hotel and with a complete climate control for that part of the data hotel.

SUMMARY OF THE INVENTION

10 The object of the invention is to provide a climate unit for use in a climate control system which allows to realize at least one of: reduction of manufacturing costs of climate control system, increased latent heat storage capacity in Wh/kg or Wh/L, increased heat transfer characteristics compared with the known embodiment of a climate control system provided with parallel and horizontal positioned plate shaped latent heat storage 15 bodies. Another or alternative object of the invention is to provide a building with climate control that is cheap, scalable, easy to install.

According to the invention, this object is achieved by a climate system comprising at least two climate units, said climate units for coupling to a building for climate control of air in said building, and comprising a rectangular box-shaped mobile 20 housing having housing walls and which housing is stackable onto similar climate units, wherein said housing comprises: - a heat exchanger comprising PCM material inside said housing; - a ventilation air channel in said rectangular box-shaped mobile housing and including said heat exchanger, said ventilation air channel for passing ventilation air from a 25 ventilation inlet of said rectangular box-shaped mobile housing via and through said heat exchanger out to a ventilation outlet of said rectangular box-shaped mobile housing; - a return air channel through said rectangular box-shaped mobile housing for transporting return air from a return air inlet of said rectangular box-shaped mobile housing to an exhaust air outlet of said rectangular box-shaped mobile housing; 30 - a ventilation air channel coupling channel part in fluid communication with said ventilation air channel, connecting opposite housing walls, and having opposite coupling passages in said opposite housing walls for allowing coupling of ventilation air channels of further, similar climate units, and 3 - a return air channel coupling channel part in fluid communication with said return channel, connecting opposite housing walls, and having opposite coupling passages in said opposite housing walls for allowing coupling to return air channels of other, similar climate units, and wherein said climate units are positioned with said ventilation air 5 channel coupling channels parts in fluid communication and with their return air channel coupling channel part in fluid communication.

Thus, a climate system can be provided that are easy and fast to build. The climate system can be cheap. Furthermore, latent heat storage heat exchange assemblies allow a further modular system for making a climate control unit that can be designed to 10 meet any need. Using the modular design, it is possible for instance to renovate existing buildings, or stepwise reduce the installed heating or cooling power. The modular units furthermore can be produced at one location, ant easily transported to a site of use. In particular when the housing is based upon a sae container, for instance a 20 Ft or 40 Ft container.

15 The climate control system that can be build using the climate units of the current invention is in particular useful in situation where in a building an access of heat is produced that needs to be removes. An example of such a building is d building housing a lot of running, electronic equipment. An example of such a building is a data hotel, a server park, or similar buildings.

20 In the climate control units, the return air channel as such does not pass air through the heat exchanger with PCM (Phase Change Material). The return air channel runs past the heat exchanger provided with PCM.

In the current application, when using for instance the terms “parallel”, “rectangular”, “perpendicular”, it should be evident that small deviations from the absolute 25 mathematical definitions can be possible. In fact, a deviation of the absolute mathematical definition can be possible as long as the parts are allowed to fulfil their functional role. In some of the current designs, a deviation of as much as 10 % is possible. In most of the current designs a deviation of 1-5 % can be possible.

Here, the feature “air channel” is a conduit of air. It can be a standard air 30 conduit used in air conditioning systems. Alternatively, as also shown in the description of embodiments, it can be a channel bounded by walls of a housing and walls provided in that housing.

4

The housing is a mobile housing. Such a housing usually is free standing and has surrounding walls. Often, these walls are closed walls. In the current invention, these walls will often be (heat) insulated. In an embodiment, the housing is a sea container, commonly available in the sizes 20 Ft and 40 Ft.

5 The heat exchanger comprising PCM material can be a general heat exchanger allowing ventilation air to exchange heat with PCM material in order to heat or cool the ventilation air using the stored latent heat of the PCM material. Often, the PCM is provided in plate-shaped containers. These containers can be stacked or positioned with respect to one another to allow air to flow passed and around such PCM units. In the 10 description, however, PCM latent heat storage heat exchangers are presented that provide a modular and simple way of building PCM assemblies, in this description referred to as latent heat storage heat exchange assemblies. These assemblies can be build together in PCM stacks, in this description also referred to as latent heat storage heat exchange stacks. These stacks can be build in into the climate unit of the current invention to provide 15 modular, scalable climate systems.

In an embodiment, the respective passages of the coupling channel parts for the inlet for ventilation air and the outlet for return air.

In an embodiment of the climate system, said return air channel coupling part and ventilation air coupling part are positioned with a coupling passage in the same 20 housing wall to allow coupling of said ventilation air channel and said return air channel to one and the same similar climate unit, allows it to select any number of climate units.

In an embodiment, part of said ventilation air channel is formed by opposite housing wall parts, at least part of that ventilation air channel part forming said coupling channel part.

25 In an embodiment, in operation said ventilation air channel has a flow direction from an upstream end of said ventilation air channel at said ventilation inlet to a downstream end of said ventilation air channel at said ventilation outlet, and said opposite housing wall parts are side walls of said ventilation air channel. In this way, the channel is provided in an efficient way.

30 In an embodiment, upstream and downstream ends of said ventilation air channel are formed by opposite housing walls. In these walls, passages can be provided as inlet and outlet for ventilation air. The passages can be provided with closures that can be operated to open and close a passage, and thus act as a valve.

5

In an embodiment, said ventilation air channel coupling channel part is cross with respect to said ventilation air channel, in particular perpendicular with respect to said ventilation air channel, more in particular crossing said ventilation air channel perpendicular.

5 In an embodiment, part of said return air channel is formed by opposite housing wall parts, at least part of that return air channel part forming said coupling channel part. This allows an efficient building. The coupling channel part can for instance couple a top wall and a bottom wall of the housing, allowing climate units to be stacked on to of one another, allowing them to operate as a single unit. Alternatively, side walls can be 10 coupled, allowing climate unites to be placed next to one another and to form functionally a single system. The coupling can be combined.

In an embodiment, in operation said return air channel has a flow direction from an upstream end of said return air channel at said return inlet to a downstream end of said return air channel at said return air outlet, and said opposite housing wall parts are side 15 walls of said return air channel.

In an embodiment, upstream and downstream ends of said ventilation air channel are formed by opposite housing walls.

In an embodiment, said return air channel coupling channel part is cross with respect to said return air channel, in particular perpendicular with respect to said 20 return air channel, more in particular crossing said return air channel perpendicular.

In an embodiment, said ventilation air channel coupling channel part is provided inside said housing at said ventilation air channel end, in particular near or at a ventilation air inlet end of said ventilation air channel. In an embodiment, said return air channel coupling channel part is provided inside said housing at said return air channel 25 end.

In an embodiment, part of at least one of said coupling channel parts is formed by part of a further wall connecting both opposite walls, in particular said channel part is provided at a comer of said housing, in a further particular embodiment said channel part is delimited by walls including four wall parts of said housing.

30 In an embodiment, said further wall comprises a selectively operable passage for providing said ventilation outlet.

6

In an embodiment, said return air channel coupling channel part is provided inside said housing at a return air channel downstream end, in particular near or at a return air outlet end of said return air channel.

In an embodiment, part of said channel part is formed by part of a further 5 wall connecting both opposite walls.

In an embodiment, said further wall comprises a selectively operable passage for providing said exhaust air outlet.

In an embodiment, said return air channel comprises a selectively operable passage near its downstream end, said passage coupling said return air channel and said 10 ventilation air channel before said heat exchanger comprising said PCM, said passages when at least partially open providing a channel loop providing at least part of said return air into said ventilation air channel.

In an embodiment, said housing further comprises an air driving device in said ventilation channel and in said return air channel. For instance, ventilators are 15 installed. Other devices may be possible. Providing the devices in said housing adds to the independent modularity and scalability of the device.

In an embodiment, the climate unit comprises a control device, in particular in said rectangular box-shaped mobile housing, and a temperature sensor in both said ventilation air channel and said return air channel and operationally coupled to said control 20 device. The control device can be operated at modi that are for instance described in the discussion of the drawings.

In an embodiment, said control device is can be operationally coupled to similar control devices of similar climate units, forming a control system.

In an embodiment, said rectangular box is a rectangular parallelepid or 25 rectangular cuboid, allowing easy stacking.

In an embodiment, said housing comprises at least one wall dividing said housing into said ventilation channel and said return air channel.

In an embodiment, said walls have wall parts that can selectively be opened and closed for providing valves in said channels.

30 In an embodiment, said housing is at least 10 m , in an embodiment it is an at least 20 Ft sea container.

The invention further pertains to climate unit for coupling to a building for climate control of air in said building, and comprising a rectangular box-shaped mobile 7 housing having housing walls and which housing is stackable onto similar climate units, wherein said housing comprises: - a heat exchanger comprising PCM material inside said housing; - a ventilation air channel in said rectangular box-shaped mobile housing and including 5 said heat exchanger, said ventilation air channel for passing ventilation air from a ventilation inlet of said rectangular box-shaped mobile housing via and through said heat exchanger out to a ventilation outlet of said rectangular box-shaped mobile housing; - a return air channel through said rectangular box-shaped mobile housing for transporting return air from a return air inlet of said rectangular box-shaped mobile housing to an 10 exhaust air outlet of said rectangular box-shaped mobile housing; - a ventilation air channel coupling channel part in fluid communication with said ventilation air channel, connecting opposite housing walls, and having opposite coupling passages in said opposite housing walls for allowing coupling of ventilation air channels of further, similar climate units, and 15 - a return air channel coupling channel part in fluid communication with said return channel, connecting opposite housing walls, and having opposite coupling passages in said opposite housing walls for allowing coupling to return air channels of other, similar climate units.

As already introduced before, the invention thus further also pertains to a 20 latent heat storage heat exchanger assembly comprising a support frame providing mutually parallel upper and lower support surfaces, and a frame unit for holding a latent heat storage heat exchange device between said support surfaces, said frame unit mounted at an angle with respect to the lower support surface, each latent heat storage device comprises a plurality of plate shaped elements at predetermined mutual distances of each 25 other and the plate shaped elements provided perpendicular to the support surfaces.

In an embodiment, the frame unit provides a device support plane for said latent heat storage heat exchange device at said angle, in an embodiment said support plane angle is at 5-45 degrees, in an embodiment at 10-30 degrees. Thus, the devices can are installed in the assembly that a fluid flow flows along the plate shaped elements in an 30 optimal way for exchanging heat with PCM.

In an embodiment, the support frame comprises a block-shaped part, in an embodiment formed by plate and/or profile elements, housing said frame unit. For instance, using metal of polymer plates and/or profiles, a rectangular channel part can be 8 provided. In an embodiment, it has rectangular fluid openings forming two opposite planes of the block-shaped support frame. In an embodiment, four rectangular closes walls define four sides of a (mathematical) block and the fluid openings form two opposite remaining sides of said (mathematical) block. This allows the assemblies to be used an easy to 5 combine modules.

In an embodiment, the support frame comprises plate walls forming a rectangular channel part, in an embodiment said frame unit is attached in and onto the support frame.

In an embodiment, the plate shaped elements of the latent heat storage 10 devices are provided mutually parallel and said latent heat storage heat exchange device has a longitudinal axis through said plate shaped elements, in an embodiment parallel to said upper and lower support surfaces.

In an embodiment, the heat storage heat exchanger assembly further comprises a fluid flow path between said upper end lower support planes, through said he 15 heat storage heat exchanger device crossing said device support plane if defined. In fact, for instance in figure 11, a number of these fluid flow paths is depicted.

In an embodiment, the heat storage heat exchanger assembly has fluid openings for allowing a fluid flow into and out of said assembly and past said latent heat storage heat exchange device, and an assembly longitudinal axis between said upper and 20 lower support plates and connecting said openings. Said assembly longitudinal axis is perpendicular to said latent heat storage heat exchange device longitudinal axis. In an embodiment said latent heat storage heat exchanger assembly comprises at least two latent heat storage heat exchange devices. In an embodiment in said assemblies arranged with their longitudinal axes parallel. Thus, the assembly allows easy combination of 25 standardized devices in a further standardized assembly.

In an embodiment, the heat storage heat exchanger assembly further comprises a front plate provided to the most upstream device for controlling, in an embodiment blocking, fluid flows to flow in between the plate elements coming from the upstream face of the most upstream device.

30 In an embodiment, the heat storage heat exchanger further comprises a rear plate provided to the most downstream device for controlling, in an embodiment blocking fluid flows to flow out between the plate elements past the downstream face of the most downstream device.

9

According to an aspect of the invention, the object is alternatively achieved by a latent heat storage heat exchanger assembly comprising a frame with a plurality of rectangular frame units, wherein adjacent frame units are hingingly coupled to one another along a coupling end, wherein each frame unit comprises a latent heat storage heat 5 exchange device, wherein each latent heat storage heat exchange device comprises a plurality of plate shaped elements at predetermined mutual distances of each other, and wherein the plate shaped elements are configured perpendicular to the coupling end.

The latent heat storage device can be constructed and installed easily.

In case of defects, some of the latent heat storage heat exchangers can be 10 replaced.

According to a further aspect of the invention, the above-referred object is achieved by a latent heat storage heat exchanger for use in a climate control system, the latent heat storage heat exchanger comprises a plurality of plate shaped elements, wherein the plate shaped elements are parallel positioned at a predetermined distance with respect 15 to each other to form a fluid channel between adjacent plate shaped elements and each element comprises a cavity filled with a phase change material, wherein the latent heat storage heat exchanger comprises a coupling structure configured to coupled the cavities of the plurality of plate shaped elements to form one coupled cavity filled with phase change material.

20 In fact, in an embodiment of the invention, the latent heat storage devices can comprise one or more of the latent heat storage heat exchangers.

According to an aspect of the invention, the latent heat storage heat exchanger comprises a coupling structure configured to couple the cavities of the plurality of plate shaped elements to form one coupled cavity filled with phase change material.

25 The invention is in an aspect based on the recognition that the manufacturing costs of a climate control unit provided with a latent heat storage heat exchanger comprising a plurality of plate shaped elements comprising a PCM-material is linear to the number of elements. Each of the known plate shaped elements is obtained by the following process steps: manufacturing the body; filling the body with a PCM-material 30 via an opening in the body; sealing the body. Subsequently, each element has to be positioned in the climate control unit. By manufacturing a body which comprises the coupling structure according to the invention, one latent heat storage heat exchanger is obtained having the features of a plurality of plate shaped elements when positioned in a 10 climate control unit, but which could be obtained be much less processing steps, namely manufacturing the body with the coupling structure; filling the body, i.e. all plate shaped elements, in one run, and sealing the body. Subsequently only one body instead of a plurality of plate shaped elements has to be positioned in the climate control unit. In this 5 way, the manufacturing costs of a climate control unit are reduced. Furthermore, the coupling structure enables us to provide a latent heat storage heat exchanger provided with a multitude of smaller plate shaped elements without increasing the amount of processing steps and thus the manufacturing costs of a latent heat storage heat exchanger. Further, the coupling structure functions as a spacer to position the plate shaped elements parallel and 10 at a predetermined distance to each other.

Further aspects of the invention are amongst others provided in the dependent claims.

In an embodiment, the coupling structure divides the fluid channel between adjacent plate shaped elements in two channel parts.

15 In an embodiment, the coupling structure divides the fluid channel between adjacent plate shaped elements symmetrically in two equal channel parts.

In an embodiment, the coupling structure forms a plate shaped cavity which is perpendicular to the plurality of plate shaped elements.

In an embodiment, the coupling structure has a length axis which is larger 20 than a length axis of the plate shaped elements.

In an embodiment, the latent heat storage heat exchanger comprises a housing of one material to form the one coupled cavity.

In an embodiment, the housing comprises a bin part and a cover part, wherein the bin part forms essentially the one coupled cavity.

25 In an embodiment, the bin part and the cover part are injection moulded parts.

In an embodiment, the cover part comprises at least one opening for filling the one coupled cavity with the PCM material.

In an embodiment, the openings are configured for receiving a sealing 30 member.

In an embodiment, the opening and sealing member are coupled by means of a screwed connection.

11

In an embodiment, housing is made from an injection-mouldable polymer material, in an embodiment a thermoplastic polymer material, in an embodiment from HDPE.

In an embodiment, the bin part and the cover part are coupled by means of 5 one continuous circular weld.

In an embodiment of the invention, the coupling structure divides the fluid channel between adjacent plate shaped elements in two channel parts. In an advantageous embodiment, the coupling structure divides the fluid channel between adjacent plate shaped elements symmetrically in two equal channel parts. These features provide a robust 10 structure, wherein the coupling structure extends along the complete length of the fluid channel between two adjacent plate shaped elements.

In an embodiment of the invention, the coupling structure forms a plate shaped cavity which is perpendicular to the plurality of plate shaped elements. This feature provides a structure which makes it easy to fill each of the plate shaped elements of 15 the latent heat storage heat exchanger with a PCM-material.

In an embodiment of the invention, the coupling structure has a length axis which is larger than a length axis of the plate shaped elements. This feature provides a latent heat storage heat exchanger with relative small plate shaped elements. This allows us the provide a latent heat storage heat exchanger with improved characteristics without 20 increasing the flow rate through the latent heat storage heat exchanger. An improved characteristic could be an increased latent heat storage capacity, an increase in the total surface of the plate shaped elements along the air channels, a reduced air resistance as the air channels can be shorter, or any other combination of improved characteristics.

In an embodiment of the invention, the latent heat storage heat exchanger 25 comprises a housing of one material to form the one coupled cavity. The housing comprises a bin part and a cover part, wherein the bin part forms essentially the one coupled cavity. This feature enables one to design a housing that could be manufactured by means of an injection moulding process. The housing could be made from HDPE (High Density Poly Ethylene).

30 In an embodiment of the invention, the cover part comprises at least one opening for filling the one coupled cavity with the PCM-material. In an embodiment of the invention, the openings are configured for receiving a sealing member. In an advantageous embodiment, the opening and the sealing member are coupled by means of a 12 screwed connection. In another embodiment, the opening and sealing members are coupled by means of gluing or welding.

In a further embodiment, the bin part and the cover part are coupled by means of one continuous circular weld. After the bin part and the cover part are positioned 5 on each other, a heating element having a shape complementary to the exterior shape of the body where the bin part and cover part touches is positioned along the exterior where the cover part and bin part touches. The touching ends of the bin part and cover part will fuse together to form the one continuous circular weld.

It is a further aspect of the invention to provide an improved method of 10 manufacturing a latent heat storage heat exchanger. The method comprises the steps: - manufacturing a bin part for a latent heat storage unit according to the invention; - manufacturing a cover part for a latent heat storage heat exchanger according to the invention; 15 - welding the bin part and the cover part together to form a body with one coupled cavity according to the invention; and, - filling the one coupled cavity with a PCM-material.

It is a further aspect of the invention to use a latent heat storage heat exchanger in a climate control system. Furthermore, an aspect of the invention is a 20 reduction in manufacturing costs of a climate control system by including at least one latent heat storage heat exchanger according to the invention in the system.

The invention further pertains to a latent heat storage heat exchanger for holding PCM-material having in at least two of its dimensions and a inside wall spacing of not more than 1 cm and comprising an insert.

25 The invention further pertains to a climate unit comprising a mobile housing with a ventilation air channel with a ventilation air inlet, a ventilation air outlet, and a heat exchanger comprising PCM between the ventilation air inlet and the ventilation air outlet, and a return air channel separate from said return air channel. The climate unit can form a climate system in combination with other, similar climate units.

30 It will be evident that the various aspects mentioned in this patent application may be combined and may each be considered separately for a divisional patent application. Other features and advantages of the invention will become apparent from the following detailed description, taken in conjunction with the accompanying 13 drawings which illustrate, by way of example, various features of preferred embodiments of the invention.

BRIEF DESCRIPTION OF THE FIGURES

5 These and other aspects, properties and advantages of the invention will be explained hereinafter based on embodiments shown in the following description with reference to the drawings, wherein like reference numerals denote like or comparable parts, and illustrating in:

Figure 1 a perspective view of a bin part and cover part of a latent heat 10 storage heat exchanger according to an illustrative embodiment of the invention;

Figure 2 top view of the embodiment shown in Figure 1;

Figure 3 a sectional view of the embodiment along the line III - III in Figure 2;

Figure 4 an enlarged view from Figure 3 showing the coupling part between 15 the bin part and the cover part before the fusing process;

Figure 5 a sectional view of the embodiment along line V -V in Figure 2; Figure 6 in more detail an embodiment of an opening structure and sealing member;

Figure 7 a perspective view of an insert for a bin part, in particular the heat 20 exchanger of figure 1;

Figure 8 a side view of figure 7;

Figure 9 a top view of figure 7;

Figure 10 a detail of figure 8;

Figure 11a latent heat storage heat exchanger assembly in use in a 25 rectangular channel and comprising a series of latent heat storage heat exchangers shown in figures 1-10 in a side view,

Figure 12 the assembly of figure 11 in front view, looking into the channel in flow direction,

Figure 13 a frame unit of figure 11 without latent heat storage heat exchange 30 devices,

Figure 14 a cross section of figure 13 as indicated,

Figure 15 the frame unit of figure 13 with seven latent heat storage heat exchange devices, 14

Figure 16 a 3D view looking into a channelwith an assembly,

Figure 17 a perspective view of yet another assembly,

Figure 18 a front view of the assembly of figure 17,

Figure 19 a perspective view of an assembly of figure 17 and 18 with 18 5 latent heat storage heat exchangers of figure 1, with a schematic drawing of such a latent heat storage heat exchanger above it just to indicate the size and orientation further,

Figure 20 a stack of latent heat storage heat exchange assemblies of figures 16-19, with one of the assemblies removed;

Figure 21a moveable housing, in particular a container, holding a stack of 10 latent heat storage heat exchange assemblies of figure 20;

Figure 22 a stack of moveable housings of figure 21 with interconnected channels as indicated;

Figure 23 a stack of moveable housings of figure 22 coupled to a building and here a separate housing an energy source, for instance one or more microturbines that 15 can deliver both electrical energy and heat.

DESCRIPTION OF EMBODIMENTS

First, below and regarding figures 1-10 a particular latent heat storage heat exchanger 1 will be described that can be used in an embodiment of the latent heat storage 20 heat exchanger assembly. That latent heat storage heat exchanger 1 will also be referred to as compact heat exchanger. In combination with for instance that compact heat exchanger, the latent heat storage heat exchange assembly 200 that is depicted in figures 11-19, and in particular the type of figures 17-19 can be build from modules of latent heat storage heat exchangers 1 very quickly and adapted to a particular need. In fact, an air treatment system 25 can be provided with an air treatment module that is flexible and can easily be adapted to a specific need. Thus, the latent heat storage heat exchange assemblies 200 can be used as modules in a latent heat storage heat exchange stack 300 as shown in figure 20. In a particular embodiment, a housing unit like for instance a standard sea container can be provided with an air inlet and an air outlet and an air channel in the housing coupling said 30 inlet and said outlet. In the air channel, a rectangular channel part can be provided. That rectangular channel part can be provided with the latent heat storage heat exchanger stack 300, or a channel can partly be made using for instance the stack 300 figure 20. This can result in a climate unit 400. When carefully making the layout of such a climate unit 400, 15 several of the climate units 400 may be combined in a stack of climate units in order to result in a climate system 500. Such a climate system 500 is thus extremely modular and can thus be designed to meet any climate condition and building size.

In the following description, the components will be described starting with 5 the basic building block, the latent heat storage heat exchanger, and ending with the climate system 500 in use.

Figure 1 illustrates a perspective view of a bin part 4 and cover part 2 of a latent heat storage heat exchanger 1 according to an illustrative embodiment of the invention. Figure 1 shows the cover part 2 positioned above and at distance from the bin 10 part 4. The bin part 4 and cover part 2 could be made by an injection moulding process.

The material could be any suitable injection moulding material. High Density Poly Ethylene (HDPE) has been found a very suitable material for both the bin part and the cover part. The bin part 4 and the cover part form together a housing with one coupled cavity. The cavity could be filled with a phase change material (PCM). Therefore, the 15 cover part 2 comprises two openings 9 positioned at opposite ends of the cover part 2. One opening is used to supply the PCM in the cavity and the other opening is used to release air when filling the cavity with PCM. After filling the housing 2,4, formed by bin part 4 and cover part 2, the openings 9 are closed with a sealing number 10.

The housing formed by the bin part 4 and the cover part 2, comprises a 20 plurality of plate shaped elements 6. Each plate shaped element 6 comprises a cavity for receiving PCM. The plate shaped elements 6 are positioned parallel to each other. A predefined spacing 7 is provided between the plate shaped elements 6 to form a fluid channel 7. It should be noted that the invention is not limited to plate shaped elements with a flat surface. For example, the surface could be enlarged, for instance by making the 25 surface curved or corrugated. The plate shaped elements 6 are coupled together to form one housing by means of a coupling structure 8. In the embodiment shown in figure 1, in the middle of two adjacent plate shaped elements 6, a passage between the cavities of two adjacent plate shaped element 6 is provided. The walls of the passage form a rigid coupling structure to keep the two adjacent plate shaped elements parallel to each other and 30 at a predefined distance to form a fluid channel between the plate shaped elements. The passages together form the coupling structure 8. The coupling structure 8 divides the fluid channel between adjacent plate shaped elements in two channel parts. In the embodiment, the passage extends from the bottom of the bin part 4 to the cover part 2. Consequently, in 16 the embodiment the height of the passage is essentially equal to the height of the cavity of the plate shaped elements. The height is defined as the distance between the bottom side and top side of the housing. It should be noted that it is not essential to have a passage between two adjacent plate shaped elements which extends from the bottom to the top side.

5 It might be possible to have two passages, one at the bottom side between two plate shaped elements and one at the top side between two plate shaped elements. In such an embodiment, the passage at the bottom side is used to supply the PCM in all the cavities of the plate shaped elements and the passages at the top side allows to release the air from a plate shaped element when filling the cavity. In this way, each cavity of a plate shaped 10 element could be filled completely with a PCM.

The housing of the latent heat storage heat exchanger 1 could also be described in the following way. A plate shaped coupling structure 8 provided with a plurality of plate shaped elements 6 or ribs at both sides of the coupling structure 8. The plate shaped elements 6 extending essentially perpendicular from the plate shaped coupling 15 structure 8. The plate shaped elements 7 are positioned parallel to each other at a predetermined distance. The space between the plate shaped elements 6 forming a fluid channel 7 configured for passing a flow of fluid along the surface of the plate shaped elements 6 to exchange heat between the PCM in the latent heat storage heat exchanger and the fluid passing along the fluid channel 7. A fluid could be a gas or a liquid. In an air 20 ventilation system it is likely that the fluid is a cooled or heated air flow.

A cross section of two adjacent plate shaped elements 6 and the coupling structure 8 between said elements form the shape of a letter H. The two adjacent plate shaped elements 6 correspond to the legs of the letter H and the coupling structure corresponds to the cross of the letter H. The space between the legs of the letter H 25 corresponds to the fluid channel. A latent heat storage as a whole comprises a plurality of H-shaped parts. Figure 2 illustrates top view of the embodiment shown in figure 1 and shows the plurality of H-shaped parts. Similarly, a cross section of the cavity formed by the housing of a combination of two adjacent plate shaped elements and the coupling structure between said adjacent elements form the shaped of a letter H.

30 Figure 2 further shows two filling openings 10 for filling the cavity of the housing of the latent heat storage heat exchanger with a PCM. The coupling structure 8 comprises a length axis, which is indicated by the line V-V. The openings 10 are positioned preferably near both ends of the coupling structure along the length axis.

17

Figure 3 illustrates a sectional view of the embodiment along the line III -III in figure 2. Reference 8a indicates the cavity formed by the coupling structure 8.

Assume that the latent heat storage heat exchanger has an outer profile with the geometry of a rectangular cube. The cube having a length L, a height H and a depth D, 5 wherein L > H > D. It thus has a longitudinal axis running through the centre of the plates. To obtain an optimal ratio with respect to contact surface between PCM and fluid channel, cross section of the fluid channel and amount of PCM-material, the coupling structure 8 is parallel to the side having a length L and a width H of the cube. The plurality of plate shaped elements 6 are parallel to the side having a length H and a width D of the cube.

10 Compared with known latent heat storage heat exchangers with a predefined size of for example L = 570mm, H = 160mm and D = 148mm and plate shaped elements parallel to the side having a length L and a width D a significant increase of contact surface and volume of PCM is possible. Furthermore, as the length of the air channel through the latent heat storage heat exchanger decreases and the cross section of the air channel 15 through the unit increases, the air resistance of the latent heat storage heat exchanger when applied in a ventilation system decreases. In the invention, the latent heat storage heat exchange devices have equal dimensions in order to make a modular system. As for the dimensions L, H, B, for instance L = 500-600 mm, H = 100-200 mm and D = 100-200 mm can be used. In some embodiments, latent heat storage heat exchange devices of halve 20 seize can be used to provide even more flexibility. Usually, the length L is halve of the full seize device. The dimensions above allow an optimal load for a throughput of air of 50 m3/h for the full seize devices and thus 25 m3/h for the halve-seize devices.

In an embodiment, the plate shaped elements have a thickness that is larger than two times the width of the air channel between two adjacent plate shaped elements, 25 for example a thickness of between 8 and 13 mm, in particular 9-12 mm, for instance around 11 mm. The air channel thus has a width of 3-7 mm, in particular 3-5 mm, for instance around 4 mm. It should be noted that the dimensions of the plate shaped elements and the distance between the plate shaped elements depend on the application of the latent heat storage heat exchanger and relate to parameters such as flow, desired latent heat 30 storage capacity, daily cycles, cooling/heating capacity, medium, etc.

Figure 4 illustrates an enlarged view from figure 3 showing the coupling part between the bin part 4 and the cover part 2 before the fusing process. The bin part comprises a rim 4a, which can be positioned in a groove between a first rim 2a and a 18 second rim 2b on the edge of the cover part 2. By heating the material of the first rim 2a and rim 4a, the material of the first rim 2a and the rim 4a will fuse and form one continuous circular weld. This could be done with a heating device with a heating profile which is congruent to the outline of the housing at the location of the coupling part. It 5 might be clear that the heating profile comprises a plurality of parts having the shape of the letter H.

Figure 5 illustrates a sectional view of the embodiment along line Y -Y in figure 2 and figure 6 illustrates in more detail an embodiment of an opening structure 9 and sealing member 10. The opening structure 9 comprises a thread 9a at the inner surface of 10 the opening 9. The sealing member 10 comprises a threaded outer surface 10a for forming a screwed connection with the opening structure 9. It might be clear that other sealing constructions are possible. In an alternative embodiment the material of the opening structure and sealing member are fused together. In another embodiment, glue is used to secure the sealing member 10 in the opening 9.

15 The present invention enables one to manufacture a latent heat storage heat exchanger comprising a plurality of parallel positioned plate shaped elements by means of the following process steps: 1) Produce a bin part with feature described above by means of an injection moulding process from a material such as HDPE; 20 2) Produce a cover part with features described above by means of an injection moulding process from the similar material as the bin part; 3) Position the cover part on the bin part; 4) Position a heating device along the contour defined by the outer profile of the surface where the cover part is positioned on the bin part; 25 5) Heat the material of the bin part and the cover part near the touching location; 6) Fuse the bin part and the cover part in one go to obtain one continuous circular weld (corresponds to the profile of the upper edge of the bin part and the lower part of the cover part) to obtain a housing with 30 one coupled cavity including the cavity formed by the coupling structure and the cavities of the plurality of plate shaped elements; 7) Fill in one go the one coupled cavity with a PCM though one or more filling openings; and 19 8) Seal the one or more filling openings with a sealing member.

The method according to the invention enables one to manufacture a plurality of parallel positioned plate shaped elements for use in a climate control system by performing each of the steps 1-8 only once. This has been made possible by providing a 5 coupling structure between the plate shaped elements and which structure comprises a cavity which provides a fluid passage between cavities of the plate shaped elements.

In figure 7, an embodiment of another aspect of the invention is shown, in an embodiment specifically designed for the heat exchanger of figure 1. It was found that when filling the storage unit of figure 1 with PCM material, for instance PCM material 10 based upon CaCfiótbO, that the crystal material tends to precipitate under the influence of gravity. When this happens, the PCM material largely loses its ability to store heat and it effects the under cooling. It was found that when inserting the insert of figure 7, the precipitation can be prevented. In fact, the particular insert even allows the heat exchanger of figure 1 to be used in any spatial orientation.

15 The insert in fact divides the larger volume of the storage unit into smaller sub spaces. In fact, in this embodiment it divides a larges space into sub spaces with each dimension smaller than 2.5 cm.

In the embodiment or figure 7, the insert has interconnected strips of material having a width to fit between two opposite walls of the storage unit. The strips are 20 provided with openings to allow the storage unit to be filled with PCM material after the insert 20 is inserted into the storage unit 1. With holes having a diameter smaller than 2 mm, it prevents the crystal material to precipitate. In fact, it was surprisingly found that the material tends to stick to the material of the insert, even if it is made, for instance via an injection moulding process, from a plastic material. In examples, the insert is made of PE 25 (polyethylene). The insert can be made of another, similar material like PP (polypropylene).

In this embodiment, the insert comprises strips that have a width corresponding to the width of the storage unit. Thus, it divides the storage unit in compartments. In this embodimen, strips 21 have a series of crosswise attaches strip parts 30 21 that are arranged to fit together to functionally form single cross strips 22, Thus, the insert can be formed as series af sub-inserts that are connected via transvers strips 23 . In this embodiment for the heat exchanger of figure 1, these strips 23 are provided to close off coupling structure 8.

20

The cross strips 22 are usually perperdicular with respect to the strips 21. The strips 21 in one level are connected via bridging parts 26. Thes bridging parts can be provided with slots for the transverse strips 23. In yet another embodiment, the entire insert can be formed as one single injection moulding part.

5 In another embodiment, a similar insert can also be used in order to divide another shaped heat exchanger into sub compartments. Thus, the storage unit can be used in any desired orientation.

In figure 10, a detail of the insert is shown. A strip or fin has holes in order to allow the PCM material to fill the spaced defined by the strips and the further walls of a 10 storage unit.

In an embodiment, the latent heat storage heat exchange unit has another shape than the shown block shape. For instance, in some applications a trapeziod shape is preferred, in order to have heat transfer properties tailored to the need. In another application, when tubes are used, a cylinder shape is perferred. In such a shape, the plates 15 are disks and are essentially parallel with respect to one another. It may even be possible to position the plates of the latent heat exchanger a little off parallel, in order to modify the flow chanel.

Figure 11 and 12 show a latent heat storage heat exchanger assemblylOO mounted in a channel 110, in longitudinal cross sectional view in figure 11 and a front 20 view looking in the fluid flow direction in figure 12. That latent heat storage heat exchanger assembly 100 can for instance hold a plurality of latent heat exchangers 1 described above. In this channels 110, air is introduced with a flow speed of usually below 2.5 m/s. In fact, in most embodiments the flow speed will be on the order of 1-2 m/s.

Often, the cross sectional area of the flow channel will be up to 5 m2. Thus, about up to 25 36000 m3/h can be treated. Often, the channel has a cross sectional area of at least 1 m2. In some of the embodiments, some of the latent heat storage heat exchanger devices in the assembly can be replaced with one or more closed plates in order to modify the capacity of the assembly. Thus, usually at least 100 m3/h will be treated using the assembly. In some specific designs, the assembly is used for treating 500-5000 m3/h.

30 The assembly has in this embodiment four frame units 101. Each frame unit 101 is coupled using a hinge 104 to a nex unit 101. At the top of channel 110, the last frame unit is provided with a coupling end 105 to couple it to the ceiling of channel 110. The last frame unit rests with one end opposite the coupling end on the bottom of the 21 channel 110. The hinges are subsequently fixed it a position to provided each of the frame units 101 at an angle a that can be between 5 and 40 degrees. Usually, the frame units are positioned at about the same angle.

The latent heat storage heat exchange devices are usually free standing 5 provided on the frame units 101. Thus, the devices have some freedom to expand. The frame units 101 are often made from L-profile elements that provided as little front area in the channel as possible. Usually, a rectangular carrying frame using profile elements 103 is produced, and using some elements this is coupled to the hinges 104. In another embodiment, the side surrounding ends of the frame units are as heigh as the latent heat 10 storage heat exchange devices. In this way, air is forced to flow between the plates.

The frame units 101 provide a support for the latent heat storage heat exchange devices. Thus, the L profile ends provide an open frame allowing the air to flow to the latent heat storage heat exchange devices. Figure 13 clearly shows an open rectangular frame, with figure 14 a cross section of figure 13 as indicated. In figure 15, the 15 frame unit 101 of figure 13 is provided with latent heat storage heat exchange devices 1.

As mentioned above, the front parts of the frame units 101 facing the incomming flow of air can in an embodiment be as high as the latent heat storage heat exchange devices 1 in order to force the air to fully flow around the devices.

In figure 16, a 3D view looking into an air channel 110 is depicted. In this 20 embodiment, the assembly has two latent heat storage heat exchange devices 1 on each frame unit 101. Furthermore, the front part for the ffane units facing the air flow are in this embodiment closed in order to further force the air through the between the plates of the devices 1. In a further embodiment, also the rear parts of the frame units facing away from the incoming flow of ais are closed. In figure 12, the resulting flow of air is depicted.

25 In order to fix the frame units 101 in their mutual position as for instance indicated in figure 11, the hinges 104 have a locking provision to lock the hinges in a desired angular position.

As mentioned before, the flow channel 110 can be provided in a removeable unit, for instance a container that can be coupled to an inlet of an existing climate control 30 system of a building.

The latent heat storage heat exchanger assembly is usually mounted in a rectangular channel in the following way. The frame with frame units 101, for instance four frame units 101, is provided with each for instance 14 latent heat storage heat 22 exchange devices, for instance of the type described in detail above, and that are filled with PCM material. The assembly is in a folded position provided in channel 110. There, the upper frame unit 101 is lifted at the end provided with the channel attachment part 105 and attached to the ceiling of the channel 110. Then, the next frame units are set to their 5 angular positions and the hinges are fixed at their positions to result in the situation shown in figure 11. Thus, mounting of the assembly in a channel can be done quick and easily.

In figures 17 and 18, another embodiment of an assembly holding several latent heat storage heat exchange devices is shown. Again, it can hold plate shaped members that are positioned at an interval and that form the latent heat storage heat 10 exchange devices. In an embodiment that allows a very fast and cheap building, the latent heat storage heat exchange devices are the latent heat storage heat exchangers described in figures 1-6. The assembly shown in figures 17 and 18 can be used as such in a channel. In an embodiment, at least two of the assemblies as shown in figures 17 and 18 are combined in a channel in order to increase the capacity of a climate control system comprising the 15 assemblies. For instance, two of more assemblies van be placed next to one another of stacked on top of one another. In an embodiment, at least four of the assemblies are placed next to one another and on top of one another. They can be placed in the same orientation with respect to one another, or 180 degrees rotated in order to provide a Y-shaped entrance as shown in the earlier assembly of figures 11-16.

20 The assembly of figures 17 and 18 has a frame 121 unit for holding at least two latent heat storage heat exchange devices. In figure 18, one in fact views in the direction and along the longitudinal axis of the assembly. The devices can be at least two of the specific heat exchangers 1 described in figures 1-6. Alternatively, a device can comprise a series of plate elements holding PCM and positioned and maintained at a 25 regular spacing, in a way providing largely the setting obtained using the heat exchangers of figures 1-6. The frame unit 121 is set at an angle of between 10 and 30 degrees with respect to a lower support surface 123 of the assembly. The assembly further comprises an upper support surface 124 arranged for supporting one or more further similar assemblies. Preferably, in order to allow stacking of assemblies in a channel, the support surfaces 123 30 and 124 are parallel and form opposite planes of (virtual) box. In an assembly, an outer frame is provided by series of 12 L-profile parts form the ribs of a box holding frame 121 within. In another embodiment, that allows an even simpler and easier building of a channel like an air channel, the outer frame is provided by a set of four interconnected 23 plates, for instance closed plates, that form four walls of a box, thus forming a channel part. Thus, the channel part has an upper wall 124, a lower wall 123, and side walls 120. Thus, a front and rear wall are left out. Two L-profile parts 121 are attaches at an angle to two opposite walls 120. In order to hold the devices onto the frame, a front and rear L-5 profile 125, 126 can be provided.

In order to force a flow of air between the plate elements of the devices, a front plate 122 and a rear plate 126 are provided to the most upstream and the most downstream device. Plate 122 blocks fluid flows between the plate elements coming from the upstream face of the most upstream device. Plate 126 blocks fluid flows to flow out 10 between the plate elements past the downstream face of the most downstream device. The plates 122, 126 may have openings in order to further control the fluid flow.

These plates 122, 126 can be clipped on the devices, or alternatively be coupled to or attached to the outer frame or to the frame unit. Thus, when stacking assemblies of figures 17 and 18, the effective flow of fluid of figure 11 can be obtained.

15 In the embodiment of figures 17 and 18, the channel length provided by the walls 120, 123 and 124 leaves o small part of the downstream (or upstream if placed reverse) device extend beyond the channel. In an embodiment, the walls or support box fully hold the devices.

Usually, as mentioned above, a design limit the flow speed of air is limited 20 to 2 m/s. Then, a design is made regarding the amount of fresh air that is needed in for instance a building or a space. Furthermore, in the design the amount of heat storage is set. Thus, the required temperatures during for instance a 24 hour cycle us determined.

Isolation conditions of a building can be taken into account, as well as the climate outdoors temperature during the year.

25 For instance, the heat storage capacity is selected to be able to heat or cool a building for 2 working days (for instance 9-11 hours) to a set temperature cycle. That set temperature can be for instance 18 degrees Celsius between 8:00 and 18:00. That set temperature should be maintained with respect to an outside temperature of for instance 2-10 degrees difference (higher and lower) with respect to that set temperature. Furthermore, 30 the required fresh air flow is determined. From these values, a required volume of PCM can be calculated, and the amount of latent heat storage hear exchangers. With am air flow of below 2 m/s passed a latent heat storage heat exchanger, the configuration of a climate system using for instance assemblies of figures 17 and 18 can be determined.

24

Figure 19 shows a schematic 3D view of a latent heat storage heat exchange assembly 200 of the type of figure 18, but now with 18 latent heat storage heat exchangers 1 of figures 1-10. Just for understanding purposes, a latent heat storage heat exchanger 1 is depicted above the assembly 200. The latent heat storage heat exchanger 1 of the type of 5 figure 1 allows a rapid building of the assembly. The arrow with B.L. indicates air coming for outside, i.e. ventilation air. T.L. indicates ventilation air that exchanged heat with the PCM material of the latent heat storage heat exchangers.

Figure 20 shows how (in this embodiment 24) of the latent heat storage heat assemblies 200 can be stacked into one latent heat storage assemblies stack 300. As each 10 assembly in an embodiment has its own wall parts, the stack can be build as a modular element allowing each assembly 200 to receive an equal amount of air. In this embodiment, all the assemblies 200 were arranges in the same orientation. It was found possible to also stack the assemblies 200 for instance each subsequent one rotated 180 degrees. Thus, the orientation of the assemblies of figure 16 may result. Furthermore, in 15 fact each assembly 200 except the outside ones can do with two closed walls. It may even be sufficient if the inner assemblies 200 have just open frames holding the latent heat storages heat exchangers 1. In this example, the assemblies stack 300 holds 24x18=432 latent heat storage heat exchangers 1.

Figure 21 shows a climate unit 400 that has a mobile, modular housing with 20 the top wall removed. The climate unit 400 has the assemblies stack 300 positioned inside the housing. The housing further has several air channels, the return air channel 405 and the ventilation air channel 407. The return air channel 405 is for return air R.L coming out of for instance a building en entering the housing and channel via inlet 412. The other air channel exits a flow of air T.L via exit 411, ventilation air that passed through the PCM 25 material of the assemblies stack 300. Inlet 412 and outlet 411 are schematically drawn, nad can have any shape. They are usually coupled to air channels of a building.

Ventilation air channel 407 is for (outside) ventilation air B.L, usually fresh air coming from outside. It has a ventilation air inlet 401. In this embodiment, halve of the front wall is indicated as ventilation air inlet 401. It may be shut off using for instance 30 shutters. The return air channel 405 further comprises an exhaust air A.L exit for air leaving the climate system and the building. Again, this exit 402 can have shutters for closing off or (partially) opening the outlet.

25

In the embodiment of figure 21, both the opposite front and back wall have passages for air. In order to make the housing stackable, the various inlets and outlets can be closed off, and various additional outlets and inlets for the air streams R.L, B.L, and A.L are provided to allow coupling of an air channel of one housing to the air channel of 5 another, similar housing. Therefore, the housing is further provided with a ventilation air channel coupling channel part 406 which in this embodiment extends between the top wall and the bottom wall. The housing further comprises a return air channel coupling channel part 403 that in this embodiment also extends between the top wall and the bottom wall.

In particular, R.L, return air from the building, can be split into flows. One 10 of these split flows is A.L, the exit or exhaust air. Another of these split flows is Re.L, return loop air that will be redirected over the latent heat storage heat exchange assemblies stack 300.This air may be mixed with incoming outside air B.L. In this container, the exhaust air A.L has a passage in a wall of the housing, and a further outlet for coupling to a further similar housing in an adjoining wall.

15

Before the assemblies stack 300, an air filter 409 is positioned.

In the housing, using walls and closable passages 404, 410, 408 in the walls, air channels can be provided. The closable passage 404,410,408, for instance using operable shutters in the walls, provide valves and switches in the air channels 405 and 407, 20 allowing for instance the creation of the return loop by (at least partially) closing passages 404 and 408, and (at least partially) opening passage 410.

Both the ventilation air channel 407 and the return air channel 405 in this embodiment have an air displacement device. Often, a ventilator is used for this purpose, although a skilled person may suggest other air displacement devices in this respect.

25 The climate unit 400 further has a temperature sensor 414 in the return air channel and a temperature sensor 413 in the ventilation air channel. The temperature sensors provide temperature information to a control device in the housing and to which they are operable coupled, often wired, but also possible via electromagnetic coupling via Wifi, Bluetooth, zigby, or other known coupling means. The control device further 30 provides control instructions to the air displacement devices. The control devices of separate climate units may be operationally coupled with one another, for instance in a wired or wireless network.

26

Figure 22 Shows how a climate system can be build from several climate units like the one shown in figure 21. In the embodiment of figure 21, the channel coupling parts 403 and 406 connect at the bottom wall and at the top wall of the housing. Thus, when similar climate units 400 are properly stacked, the coupling channel parts 5 interconnect in fluid coupling and ventilation air B.L can enter via the inlets of the lower climate units, and split in flows passing through the (here three) climate units placed on top of one another. Return air R.L can enter each climate unit 400 and pass through coupling channel part 403 to exit via exits 402 of the top most containers. In this setting, short cutting flows of air is prevented, and ventilation air is taken in as low as possible. In this 10 embodiment of figure 22, the outlets 402 of the lower climate units 400 are closed, and the inlets 401 of the top climate units 400 are closed. Both the inlets and the outlets of the middle row of climate units 400 are closed in this embodiment. In the embodiment of figure 22 when using 9 containers of 20 Ft, the total flow of ventilation air B.L can amount to 97.200 m3/h. This flow of air can have the same temperature as the melting temperature 15 of the PCM.

In an alternative setting, the coupling channel parts connect opposite side walls and air flows in horizontal direction through climate units.

The climate control system can have one of the following control setups.

20 Control schedule 1

In control schedule one, a maximum return air temperature control, the following control is used. It has a minimum limitation of the air inlet temperature.

a. If a measured temperature of return air for instance using temperature sensor 414 is higher then a measured outside temperature 25 using for instance a temperature of the inflwing ventilation air for instance at inlet 401, then 100 % ventilation air B.L, otherwise 100 % R.L over the PCM stack; b. A maximum set point for the temperature of the return air is set, for instance at 28 degrees C, en a minimum set point for the ventilation air 30 temperature is set to for instance 18 degrees Celsius; c. If a measured return air temperature is below the maximum set point and the ventilation air temperature is equal to or higher then the 27 minimum set point, then the ventilation air channel and the exhaust channel are both closed, or ventilators are slowed down; d. If the ventilation air temperature is below the minimum set point, then the exhaust channel and the ventilation channel close, and the 5 return valve opens. In this way, more and more warm return air will be added and re-circulated.

Using this control, the ventilator will mn between 0-100% for a temperature of up to 28 degrees C. The valves will allow at 26-100% of ventilation air with a temperature between -10 and 28 degrees C. No ventilation air if the 10 temperature is above 20 degrees C..

Control schedule 2

In control schedule 2, a minimum ventilation inlet temperature control with a maximum limitation of the return air temperature is used.

15 a. If a measured return air temperature 414 is higher then a measured ventilation air temperature 413, then 100% ventilation air, otherwise 100% return air; b. A minimum set point is set to the minimum ventilation air temperature, for instance at 25 degrees Celsius. A maximum set point is 20 set to the maximum return air temperature, for instance at 35 degrees

Celsius.

c. If a measured return air temperature 414 gets below the max set point and the ventilation air temperature 413 is equal to or below the min set point, then the ventilation air ventilator and the return air 25 ventilator are both slowed down.

d. If the ventilation air temperature 413 gets below the minimum set point, then the recirculation valve is opened and the return exits and ventilation air valves are closed to provide more air in recirculation.

Using this control, a ventilator will run between 0-100% when the 30 temperature load in a room of building is 0-100 %. The valves will allow between 22-83% of ventilation air for a ventilation air temperature of between -10-35 degrees Celsius.

Control schedule 3 28

In control schedule 3, a. If a measured return air temperature 414 is above a measured ventilation air temperature 413, then 100 % ventilation air is used, otherwise 100% recirculation air; 5 b. For the ventilator speed a set point of a temperature difference between the return air temperature and the ventilation air temperature (413-414) is set at for instance 10 degrees Celsius. If the temperature difference decreases, then the speed of the ventilation air and of the return air ventilators are both slowed down.

10 c. A set point is set for the ventilation air temperature of for instance 20 degrees Celsius. Is the ventilation air temperature get below 20 degrees Celsius, then the return air and ventilation air valves close, and the recirculation valves open more and more to add more warm return air to the ventilation air.

15 In this way, the ventilator speed will be between 0-100 % to maintain the temperature difference between ventilation air and return air between set point difference.

Note that for each of the control schedules, the lower set point temperature 20 usually is below the melting temperature of the PCM material. In a data hotel design, usually the electronics inside the data hotel or server centre will produce an excess heat. Thus, on average heat must be taken out of the building. The melting temperature is selected relatively high in these situations. In a design, this melting temperature is selected to be between 22 and 26 degrees Celsius, in particular between 23 and 25 degrees Celsius.

25 In these cases, the lower temperature will be selected to be several degrees below the melting temperature. Thus, as long as the return air temperature as well as the ventilation air temperature are below the melting temperature of the PCM material, the flow of air through the PCM stack does not melt the PCM material.

30 Usually, the invention is used for air flows. However, it may also be used for flows of other fluids. For instance, other gases of mixtures of gases, but also for liquids, for instance water.

29

The measures described hereinbefore for embodying the invention can obviously be carried out separately or in parallel or in a different combination or, if appropriate, can be supplemented with further measures; it will in this case be desirable for the implementation to depend on the field of application of the device. The invention is 5 not limited to the illustrated embodiments. Changes can be made without departing from the idea of the invention.

Claims

A climate system comprising at least two climatic units, the climatic units for coupling to a building for air conditioning in the building, and comprising a rectangular, box-shaped mobile housing with housing walls and which housing is stackable on similar climatic units, the housing comprising: a heat exchanger comprising PCM material in the housing; -a ventilating air channel in the rectangular, box-shaped mobile housing and provided with the heat exchanger, the ventilating air channel for passing on ventilating air from a ventilating air inlet of the rectangular, box-shaped mobile housing via and through the heat exchanger to an ventilating air outlet of the rectangular one, box-shaped mobile housing; a return air channel through the rectangular, box-shaped mobile housing for transporting return air from a return air inlet of the rectangular, box-shaped mobile housing to an outlet air outlet of the rectangular, box-shaped mobile housing; -a ventilation air channel coupling channel part which is in fluid communication with the ventilation air channel, which mutually connects opposite housing walls, and with opposite coupling passages in the opposite housing walls to make it possible to mutually connect ventilation air channels of further, similar climatic units, and -a return air channel coupling in which is fluid communication with the return air duct, which interconnects opposite housing walls, and is provided with opposite coupling passages in the opposite housing walls for coupling with return air ducts of other, similar climate units, and wherein the climatic units are arranged with the ventilation air duct coupling duct parts with fluid return duct and each with return air duct in fluid communication.

The climate system according to claim 1, wherein the return air duct coupling channel part and the ventilation air duct coupling channel part are positioned with a coupling passage in the same housing wall to enable coupling of the ventilation air channel and the return air channel with one and the same similar climate unit.

3. The climate system according to claim 1 or 2, wherein a part of the ventilation air channel is formed by opposite housing wall parts, wherein at least a part of said ventilation air channel part forms the coupling channel part.

4. The climate system according to any one of the preceding claims, wherein in operation the ventilating air duct is a flow direction from an upstream end of the venting air duct at the vent inlet to a downstream end of the venting air duct at the venting outlet, and the opposite housing wall portions are side walls of the venting air duct.

The climate system according to any of the preceding claims, wherein upstream and downstream ends of the ventilating air duct are formed by opposite walls of the housing.

6. The climate system as claimed in any of the foregoing claims, wherein the ventilation air channel coupling channel part is transverse to the ventilation air channel, in particular perpendicular to the ventilation air channel, more in particular crossing the channel perpendicularly.

7. The climate system according to any one of the preceding claims, wherein part of the return channel is formed by opposite housing walls, wherein at least part of that return air channel forms the coupling channel part.

8. The climate system according to any one of the preceding claims, wherein in operation the return air channel has a flow direction from an upstream end of the return air channel at the return air inlet to a downstream end of the return air channel at the return air outlet, and the opposite housing wall parts are side walls of the return air channel .

The climate system of any one of the preceding claims, wherein upstream and downstream ends of the return air duct are formed by opposite housing walls.

The climate system according to any one of the preceding claims, wherein the return air channel coupling channel part is transverse to the return air channel, in particular perpendicular to the return air channel, more in particular to the return air channel perpendicularly.

The climate system according to any one of the preceding claims, wherein the ventilation air duct coupling duct part is provided in the housing at the ventilation air duct end, in particular near or at a ventilation air inlet end of the ventilating air duct, in particular the return air duct coupling duct part is provided within the housing at the return air duct end. 15

The climate system according to any of the preceding claims, wherein part of at least one of the coupling channel parts is formed by part of a further wall connecting both opposite walls, in particular the channel part is provided at a corner of the housing in a further In one embodiment, the channel part is bounded by walls comprising four wall parts of the housing.

The climate system according to the preceding claim, wherein the further wall comprises a selectively operable passage for providing the ventilation air outlet.

The climate system as claimed in any one of the preceding claims, wherein the return air channel coupling channel part is provided in the housing at a downstream end of a return air channel, in particular near or at a return air outlet end of the return air channel.

The climate system according to the preceding claim, wherein a part of the channel part is formed by part of a further wall which mutually connects both opposite walls.

The climate system of any one of the preceding claims, wherein the further wall comprises a selectively operable passage for providing the exhaust air outlet.

17. The climate system according to any one of the preceding claims, wherein the return air channel comprises a selectively operable passage at its downstream end, the passage connecting the return air channel and the ventilation air channel to each other for the heat exchanger comprising the PCM, the passages when at least at least partially open a channel loop that provides at least a portion of the return air in the ventilation air duct.

The climate system of any one of the preceding claims, wherein the housing further comprises an air displacement device in the ventilation duct and in the return air duct.

19. The climate system according to claim 18, comprising a control device, in particular in the rectangular box-shaped mobile housing, and a temperature sensor in both the ventilation air duct and the return air duct and operatively connected to the control device.

The climate system of claim 19, wherein the control device 20 is operably connectable to similar control devices of similar climate units, to form a control system.

The climate system of any one of the preceding claims, wherein the rectangular box is a rectangular parallelepiped or a rectangular bar. 25

The climate system according to any of the preceding claims, wherein the housing comprises at least one wall that divides the housing into the ventilation duct and the return air duct.

The climate system of any one of the preceding claims, wherein the walls have wall portions that can be selectively opened and closed to provide valves in the channels.

The climate system according to any one of the preceding claims, wherein the housing is at least 10 m, in one embodiment it is an at least 20 foot sea container.

25. The climate system according to any one of the preceding claims, wherein the heat exchanger with PCM comprises a latent heat storage heat exchanger assembly comprising a support frame for which mutually parallel upper and support surfaces provides, and a frame unit for holding a latent heat storage heat exchanger device between said heat exchanger. supporting surfaces, wherein the frame unit is mounted at an angle to the supporting surface, and wherein each latent heat storage device comprises plate-shaped parts at a predetermined mutual distance from each other and wherein the plate-shaped parts are provided perpendicular to the supporting surfaces.

26. The climate system according to claim 25, wherein the frame unit provides a device support surface for the latent heat storage heat exchange device at that angle, in one embodiment that support surface angle is 5-45 degrees, in an embodiment 10-30 degrees.

27. The climate system according to claim 25 or 26, wherein the supporting frame comprises a block-shaped part, in an embodiment formed by plate and / or profile parts, that house the frame unit.

28. The climate system according to one or more of the preceding claims, wherein the support frame comprises plate walls that form a rectangular channel part, in one embodiment the frame unit is connected in and to the support frame.

29. The climate system as claimed in one or more of the foregoing claims, wherein plate-shaped parts of the latent heat storage heat exchanger are mutually parallel and the latent heat storage heat exchange device has a longitudinal axis through the plate-shaped elements, in an embodiment parallel to the upper and supporting surfaces.

The climate system of any one of the preceding claims, further comprising a fluid flow path between the top and support surfaces, crossing through the heat storage heat exchange device and the device support surface when defined.

The climate system according to claims 29 and 30, provided with fluid openings to allow fluid to flow into and out of the assembly and heat exchanger device along the latent heat storage device, and a longitudinal axis of the assembly between the upper and support plates and which interconnects the openings wherein the longitudinal axis of the assembly is perpendicular to the longitudinal axis of the latent heat storage heat exchanger device, in one embodiment the latent heat storage heat exchanger assembly comprises at least two latent heat storage heat exchanger devices, in one embodiment arranged in the assemblies with their longitudinal axes parallel.

32. The climate system as claimed in any of the foregoing claims 25-31, further comprising a front plate provided on the most upstream device, for controlling, in one embodiment blocking, fluid flows to pass between the plate parts and coming from the most upstream surface of the most upstream device.

The climate system of any one of the preceding claims 25-32, further comprising a back plate on the most downstream device, for controlling, in one embodiment blocking, fluid streams to flow out between the plate members beyond the downstream face of the most downstream located establishment. 25

35. A climate system, in particular according to any one of the preceding claims, comprising a frame with rectangular frame units, wherein adjacent frame units are hingedly coupled to each other along a coupling end, wherein each frame unit comprises a latent heat storage heat exchanger, wherein each latent heat storage heat exchange device comprises plate-shaped parts at predetermined mutual distances from each other, and wherein the plate-shaped parts are arranged perpendicular to the coupling part.

36. The climate system according to claim 35, wherein the latent heat storage heat exchangers each comprise plate-shaped parts at a predetermined mutual distance parallel to each other to form a fluid channel between adjacent plate-shaped parts and each part comprises a cavity filled with a phase-changing material (phase change material, PCM).

37. The climate system according to one or more of the preceding claims, wherein the latent heat storage heat exchanger further comprises a coupling structure to connect the cavities of the plate-shaped parts to form a coupled cavity filled with phase change material (PCM) .

The climate system of any one of the preceding claims, wherein the coupling structure is adapted to subdivide the fluid channel between two adjacent plate-shaped parts into two channel parts. 15

The climate system of claim 38, wherein the coupling structure is adapted to symmetrically divide the fluid channel between adjacent plate-shaped parts into two equal channel parts.

The climate system according to any of the preceding claims, wherein the coupling structure forms a plate-shaped cavity that is perpendicular to the plate-shaped parts.

41. The climate system according to any one of the preceding claims, wherein the coupling structure has a longitudinal axis that is larger than a longitudinal axis of the plate-shaped parts.

42. The climate system according to any of the preceding claims, characterized in that the latent heat storage heat exchange device comprises a housing of one material to form one coupled cavity.

The climate system according to the preceding claim, characterized in that the housing comprises a baking part and a cover part, the baking part forming substantially one coupled cavity.

The climate system according to the preceding claim, wherein the baking part and the cover part are injection-molded parts.

45. The climate system according to any one of the preceding two claims, wherein the cover part comprises at least one opening for filling the coupled cavity with the PCM material.

The climate system of the preceding claim, wherein the openings are formed to receive a closure member.

The climate system according to the preceding claim, wherein the opening and closing part are coupled by means of a screw connection.

The climate system of any one of the preceding claims wherein the latent heat storage heat exchange device has a housing, the housing being made of

20 HDPE.

The climate system according to any of the preceding claims 42-48, wherein the baking part and the cover part are coupled by means of a continuous circulating weld.

A latent heat storage heat exchange device for holding phase change material (PCM), in particular a latent heat storage heat exchange device according to any one of the preceding claims, wherein the latent heat storage heat exchange device comprises plate-shaped elements which each form a cavity for PCM wherein the latent heat storage heat exchanger device 30 includes an insertion part with crossed ribs for subdividing the latent heat storage heat exchanger into fluid spaces under communication.

The latent heat storage heat exchange device according to the preceding claim, wherein the insertion part divides the latent heat storage heat exchange device into spaces with walls separated by less than 3 cm, in particular less than 2.5 cm. 5

The latent heat storage heat exchange device as claimed in any one of the preceding two claims, wherein the insertion member has fluid connections that interconnect adjacent subsets in fluid communication.

The latent heat storage heat exchange device as claimed in any one of the preceding three claims, wherein the ribs of the insertion part comprise strips having a width to fit between two opposite walls of the plate-shaped part, in particular to fit sealingly between the opposite walls.

The latent heat storage heat exchanger according to any one of the preceding four claims, wherein the ribs comprise strips that are mutually cross-linked to form subspaces.

The latent heat storage heat exchange device according to any one of the preceding five claims, wherein the opposite walls of the plate-shaped element of the heat exchange device are separated by less than 20 mm, in an embodiment separated by less than 10 mm, in a further or additional embodiment the walls substantially parallel, and in a further or additional embodiment the ribs comprise strips with a width corresponding to the space between the opposite walls, in particular correspondingly closing, and in a further or additional embodiment the strips are mutually connected around rectangles to be formed with sides separated by less than 3 cm, in one embodiment separated by less than 1 cm.

The latent heat storage heat exchanger according to any one of the preceding six claims, wherein at the insertion part is made of plastic, in particular of polyethylene, in an embodiment obtained by injection molding, in an embodiment thereof obtained by injection molding as a single part.

57. A climate unit for coupling to a building for air conditioning in the building, and comprising a rectangular, box-shaped mobile housing with housing walls and which housing can be stacked on similar climate units, the housing comprising: -a heat exchanger comprising PCM material in the housing; -a ventilation air channel in the rectangular, box-shaped mobile housing and provided with the heat exchanger, the ventilation air channel for passing on ventilation air from a ventilation air inlet of the rectangular, box-shaped mobile housing via and through the heat exchanger to a ventilation outlet of the rectangular one, box-shaped mobile housing; a return air channel through the rectangular, box-shaped mobile housing for transporting return air from a return air inlet of the rectangular, box-shaped mobile housing to an outlet air outlet of the rectangular, box-shaped mobile housing; a ventilation air channel coupling channel part which is in fluid communication with the ventilation air channel, which interconnects opposite housing walls and with opposite coupling passages in the opposite housing walls to make it possible to interconnect ventilation air channels of further, similar climatic units, and a return air channel which is fluid communication channel communication. with the return air channel, which connects opposite housing walls, and provided with opposite coupling passages in the opposite housing walls for coupling with return air channels of other, similar climate units. -o-o-o-o-o-