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WO2013020583A1 - Système de conditionnement d'air - Google Patents

Système de conditionnement d'air Download PDF

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Publication number
WO2013020583A1
WO2013020583A1 PCT/EP2011/063647 EP2011063647W WO2013020583A1 WO 2013020583 A1 WO2013020583 A1 WO 2013020583A1 EP 2011063647 W EP2011063647 W EP 2011063647W WO 2013020583 A1 WO2013020583 A1 WO 2013020583A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
control system
climate
pcm
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2011/063647
Other languages
English (en)
Inventor
Antonius Henricus Hubertus SCHMITZ
Marcel Reijer GOUW
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AUTARKIS BV
Original Assignee
AUTARKIS BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AUTARKIS BV filed Critical AUTARKIS BV
Priority to PCT/EP2011/063647 priority Critical patent/WO2013020583A1/fr
Priority to PCT/EP2012/065551 priority patent/WO2013021019A1/fr
Publication of WO2013020583A1 publication Critical patent/WO2013020583A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F24F5/0021—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using phase change material [PCM] for storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/40—HVAC with raised floors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0075—Systems using thermal walls, e.g. double window
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the invention relates to a climate control system.
  • HVAC systems for buildings are generally known.
  • Known HVAC installations for office building usually have a lager cooling/heating capacity installed which have a strongly discontinuous operation, usually a daytime operation and a nighttime operation.
  • these systems however require a large amount of energy and thus have a high contribution to Carbon dioxide emission. Large efforts are being made to reduce the carbon dioxide emission of buildings.
  • WO2003102484 A2 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 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. Cycles of melting and solidifying at a certain temperature enable it to store and releasing large amounts of energy. Heat is absorbed or released when the material changes from solid to liquid and vice versa. Bodies filled with PCMs are classified as latent heat storage (LHS) units.
  • the capacity is laid out in one of the following ways.
  • the outside air is used to cool down the PCM material.
  • air is passed the PCM material and cools a room or other part of a building. This, however, does not function when both days as well as nights are above the set temperature. This occurs, for instance, in tropical regions.
  • the object of the invention is to provide a climate control system which allows to realize at least one of: reduction of manufacturing costs of climate control unit, reduced energy use of the system compared with the known embodiment of a climate control systems, and/or a reduction in the required installed heating and cooling systems and their capacity, for instance in electrical HVAC systems.
  • a climate control system comprising a PCM latent heat storage heat exchange assembly in a channel for ventilation air, an air temperature adjustment device in a channel for ventilation air, and a recirculation loop channel for circulating air, said recirculation loop channel including said
  • PCM latent heat storage heat exchange assembly and said air temperature adjustment device.
  • PCM material in combination with a recirculation of air inside the climate system in order to regenerate the installed PCM material provides a lossless or almost lossless storage of energy.
  • This allows the installed systems for heating and/or cooling to operate in a more continuous way.
  • This can lead to a lower installed capacity and thus a reduction in cost of the climate control system.
  • It may also or alternatively lead to a lower overall energy consumption of the climate system and as a result on a lower overall energy consumption of the building.
  • the use of PCM material in particular when installed in buildings that have a discontinuous use, like office buildings, results in a more continuous use of installed (conventional) heating/cooling machines.
  • the installed capacity can be reduced with up to 50 %. This may reduce the energy usage and thus the carbon dioxide emission. It may also provide a reduction of the cost of the installation. Energy reduction may follow from this through:
  • the PCM material is applied on the air-side of the climate control system. This reduces the installation costs of such a system. Using air reduces transfer losses as the air can be directly used in the ventilation of a building. Thus no additional transport losses apply. Because of the higher storage temperatures in an air side PCM application, a longer use of free outside air cooling can be used, thus again leading to an energy reduction.
  • the additional air temperature adjustment device can adjust the air temperature beyond the PCM melting/solidifying temperature. And if the outside air temperature is close to the desired temperature or it is easily adaptable to a set temperature, it is even possible to use that air without heating or cooling, thus saving further energy.
  • the PCM material is regenerated.
  • Regeneration of PCM material in this context can mean melting of the PCM material. In this way, the PCM material can give off heat and solidify/crystallize again in the process of giving off heat. Regeneration can also mean solidifying of crystallizing the PCM material. In this way, the PCM material can take up heat which melts the PCM material again. In fact PCM material is double, as PCM already stands for Phase Change Material.
  • a latent heat storage heat exchange assembly has latent heat storage units filled with PCM, phase change material. It has in inlet allowing a fluid flow into said assembly and to contact said latent heat storage units. The fluid thus exchanges heat with the PCM material. In that way the fluid can be heated or cooled using the PCM material.
  • latent heat storage heat exchange units are described.
  • the latent heat storage heat exchange devices, units and assemblies described in PCT/NL2011/050191 and L2007209 of August 2011 are referred to. These patent applications are referred to as if fully set forth in this document.
  • climates systems and for instance thermal ceilings are disclosed in EP1509738, EP1908809, L1029355, EP2180108. These patent applications are referred to as if fully set forth in this document.
  • the air temperature adjustment device can be any general heating and/or cooling machine known in the art.
  • the air temperature adjustment device comprises a heat exchanger operationally coupled in series with the PCM heat storage heat exchange assembly. Air thus passes through the (conventional) heat exchanger as well as through the PCM heat exchanger.
  • the air exchanges heat with another fluid. This fluid can originate from a buffer source of fluid, for instance a geothermal source, or from a conventional heating or cooling machine, from a solar heater, or from another source.
  • the air temperature adjustment device may also be of another nature and directly heat or cool the air. Examples are a conventional electric heater and a solar collector.
  • said channel with said PCM latent heat storage heat exchange assembly and said channel with said air temperature adjustment device are one single channel.
  • the PCM latent heat storage heat exchange assembly and the air temperature adjustment device are arranged in series in one channel.
  • At least part of said recirculation loop channel forms at least part of said channel with said PCM latent heat storage heat exchange assembly and/or said channel with said air temperature adjustment device.
  • said climate control system for providing a temperature-controlled flow of air, comprising an inlet and an outlet for said air, an air displacement device, said PCM latent heat storage heat exchange assembly and said air temperature adjustment device operationally coupled in series between said inlet and said outlet, a return channel coupled in parallel over said serially coupled PCM latent heat storage heat exchange assembly and said air temperature adjustment device, and a set of valves, which valves are configured to be able in a first configuration to block at least partially said inlet and said outlet and to unblock at least partially said return channel, thus providing a channel loop including said serially coupled PCM latent heat storage heat exchange assembly, said air temperature adjustment device and said air displacement device, said climate system configured to allow during operation in said first configuration to have a loop of circulating air for regenerating PCM material in said PCM latent heat storage heat exchange assembly, and said valves are configured to be able in a second configuration to at least partially block said return channel, said climate system further configured to allow during operation in said second configuration to provide a flow of air from said
  • the air displacement device in general can be any air displacement device used to displace air.
  • Such devices as such are well known in for instance air conditioning systems.
  • they can comprise all sorts and types of ventilators.
  • a return channel is in an embodiment coupled in parallel over said serially coupled PCM latent heat storage heat exchange assembly and said air temperature adjustment device.
  • a channel can be provided between said inlet and said outlet, and the PCM latent heat storage heat exchange assembly and said air temperature adjustment device can be provided in said channel, or said channel passes air subsequently through said assembly and said device.
  • Said return channel has two opposite ends. One end is in fluid communication with the channel between said inlet and upstream of said serially coupled PCM latent heat storage heat exchange assembly and said air temperature adjustment device. The opposite end is in fluid communication with said channel between said outlet and downstream of said serially coupled PCM latent heat storage heat exchange assembly and said air temperature adjustment device.
  • the climate control system comprises a set of valves. In one combination of positions of these valves, the air runs almost exclusively through the latent heat storage heat exchange assembly and the air temperature adjustment device. Usually, this is accomplished when blocking the return channel almost completely. In some cases, for instance if a larger flow of air is required and the required temperature adjustment is small, it may be desirable to use the return channel as a source of additional "bypass air". The main purpose of the return channel, however, is regeneration of the PCM material. In another configuration of the valves, the inlet and outlet are at least partially blocked.
  • the set of valves can include two switch valves at the ends of the return channel, thus, these valves switch between (at least partially) blocking the inlet ends, and leaving the main channel that couples the inlet, outlet and serially coupled latent heat storage heat exchange assembly and air temperature adjustment device at least partially free, and a setting in which these valves (at least partially) unblock the return channel ends and (at least partially) block the inlet and outlet.
  • three controllable valves can be used.
  • the return channel valve In one setting of the valves, the return channel valve at least partially blocks. This, air runs substantially through the main channel from the inlet to the outlet.
  • the return channel together with the main channel form a loop. Air can circulate from the latent heat storage heat exchange assembly to the air temperature adjustment device and back again, allowing said air temperature adjustment device to regenerate the PCM material in the latent heat storage heat exchange assembly.
  • the invention further relates to a climate control system comprising:
  • a return channel having two opposite ends, one end in fluid communication with the channel between said inlet and upstream of said serially coupled PCM latent heat storage heat exchange assembly and said air temperature adjustment device, the opposite end in fluid communication with said channel between said outlet and downstream of said serially coupled PCM latent heat storage heat exchange assembly and said air temperature adjustment device, and a valve for restricting said return valve.
  • the invention further relates to a climate control system comprising:
  • an air channel loop comprising an air displacement device, said air channel loop having first loop part and a second loop part;
  • said channel loop comprises channel adjustment means for adjusting the channel between mainly circulating air in said channel loop, and restricting the flow of air through said second loop.
  • the invention further relates to a climate control system, comprising: a heat exchanger in fluid communication with a source of fluid and
  • a PCM latent heat storage heat exchange assembly in fluid communication with said heat exchanger in a second air loop allowing said climate control system to selectively switch between:
  • the invention further relates to a climate control system for providing a temperature-controlled flow of air, said climate system comprising:
  • valves are configured to be able in a first configuration to block at least partially said inlet and said outlet and to unblock said return channel, thus providing a channel loop including said serially coupled PCM latent heat storage heat exchange assembly, said air temperature adjustment device and said air displacement device, said climate system configured to allow during operation in said first configuration to have a loop of circulating air for regenerating PCM material in said PCM latent heat storage heat exchange assembly, and said valves are configured to be able in a second configuration to at least partially block said return channel, said climate system further configured to allow during operation in said second configuration to provide a flow of air from said inlet through said PCM latent heat storage heat exchange assembly and said air temperature adjustment device to said outlet.
  • the invention in all its aspects thus provide embodiments of a climate system in which when in operation in a first configuration comprises a loop of circulating air that enables said air temperature adjustment device to regenerate said PCM latent heat storage heat exchange assembly, and in operation in a second configuration said air temperature adjustment device together with said PCM latent heat storage heat exchange assembly adjust the temperature of incoming air to a set temperature value.
  • Figure 1 a schematic drawing of a climate system of the state of the art
  • FIG. 2 a schematic drawing of a climate system using PCM assemblies and units;
  • Figure 3 the climate system of figure 2 running in a tropical region during daytime;
  • Figure 4 the climate system of figure 2 running in the tropical region during nighttime
  • Figure 5 a climate system as an external system
  • Figure 6 a climate system installed inside a room or part of a building.
  • FIG 1 a schematic drawing is made of a climate system that may be ofr instance be used in the Pearl River Tower, in Guangzhou, China. This schematic drawing is based upon the description in the article of Frechette et al. referred to above.
  • the climate system used in this building may have the following layout. Please note that the schematic drawing and description are a generalized interpretation, and in some instances alternatives for the devices used in the actual building are presented.
  • the building 1 has rooms 2.
  • the rooms are provided with several installations for climate control.
  • the rooms 2 are partly temperature controlled using an air conditioning system 4.
  • the rooms 2 are provided with further temperature control provisions 21 and 22 (discussed below) that use a temperature controlled liquid, usually water, to further control the temperature in each room.
  • the former usually implies providing additional cooling.
  • Both of these provisional use a source a cooling machine 5.
  • a cooling machine 5 is used, but other sources may alternatively be used, like a geothermal source.
  • the cooling machine 5 was to receive its electrical energy 7 from a set of micro turbines 6.
  • the cooling machine 5 further used the heat 8 from these micro turbines 6 in cogeneration or heat-power coupling.
  • micro turbines 6 were further intended to deliver power 20 to the grid when the cooling machine 5 needs no or limited power. In that way, it was expected that the use of the micro turbines 6 could be optimized. In the actual design the micro turbines 5 were not used because coupling to the grid was not allowed.
  • the cooling machine 5 provides cooled water via conduits 10 to the further temperature control provisions, and via conduits 17 to the air conditioning system 4.
  • the further temperature control provisions will be discussed first, and afterwards the air conditioning system 4.
  • the rooms 2 of the building and with floor 28 and ceiling 29 are provided with a raised floor 25 from which cooled ventilation air 27 from the air conditioning system is released in the air as displacement ventilation.
  • the maximum amount of ventilation air limits the cooling property of this part of the climate system.
  • other configurations may be possible.
  • the rooms 2 use cooled liquid from the cooling machine 5 (conduits 10) to provide additional cooling.
  • a lowered ceiling with a so-called “chilled radiant ceiling” 21 with a “perimeter chilled beam system” 22 may be used.
  • the building is to be equipped with an internally ventilated, high performance active double wall with mechanized blinds 30 on the northern and southern facades. Heated air from this system is directed to the air conditioning system 4 and used as an energy source for a dehumidifier 16.
  • the air conditioning system 4 has a housing 19 with an inlet 14 for outside air and an outlet 15 for used exhaust air. In a tropical environment, usually both flows of air have a temperature above the set temperature of the room 2. In the tropical
  • the air is first dehumidified in a dehumidifier.
  • the exhaust air which is in fact heated in the double wall facade 30, provides at least part of the energy needed for the dehumidifier.
  • an evaporative cooler 16 with desiccant wheels 12, 13 are used.
  • the dried air of usually 30-35 °C is cooled to 19-21 °C using heat exchanger 11.
  • FIG 2 a complete climate control system using both an air conditioning system as well as temperature control using one or more liquid cooling/heating systems is presented.
  • many of the installed systems and devices are the same as in figure 1. They have the same reference numbers.
  • building 1 has rooms 2 and an air conditioning system 4.
  • PCM latent heat storage is applied in such a way that even in tropical climates the installed cooling capacity can be reduced with 50% or more.
  • the capacity of latent heat storage material that is installed should be sufficient to provide a maximum of about 50% of the cooling/heating capacity during use hours.
  • heating/cooling machine 5 During use hours, the other part of the required heating/cooling capacity is provided by heating/cooling machine 5. During off-use hours, the full capacity of the heating/cooling machine 5 can be used for regenerating the latent heat storage material. Thus, the heating/cooling machine 5 can be full time operational and its capacity can be reduced with about 50%. When using micro turbines, for instance, it is no longer required that they are able to give power to the grid. Thus, about have of the required micro turbine capacity would be needed.
  • the climate system of figure 2 has an air conditioning system 4 that in addition to the air conditioning system of figure 1 has a PCM latent heat storage heat exchange assembly 31 installed.
  • This PCM assembly can be of a well-known type using for instance plates filled wit PCM material.
  • a PCM assembly is used that is described in L2007209, filed on 1 August 2011, of the current applicant. This document is in this text incorporated by reference as if fully set forth.
  • a 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 other and the plate shaped elements provided perpendicular to the support surfaces.
  • each latent heat storage device comprises a plurality of plate shaped elements at predetermined mutual distances of each other and the plate shaped elements provided perpendicular to the support surfaces.
  • the embodiment of figure 18 is very useful.
  • This PCM assembly has a low pressure drop while on the other hand exchanging heat very efficiently.
  • Figure 1 shows such a unit as an injection moulded container holding the PCM material. It has 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
  • the air conditioning system 4 further comprises a return conduit or channel 32 that can be used to allow air to flow back between the PCM assembly 31 and the heat exchanger 11. In that way, PCM material in the PCM assembly can be regenerated. In a tropical climate, that usually means that the PCM material is cooled.
  • valves 33, 34 and 35 are installed in order to allow the air conditioning system 4 of figure 2 to switch between a mode of operation in which the combination of the PCM assembly 31 and the heat exchanger together bring the temperature of incoming air to a set temperature and a another mode of operation in which using the heat exchanger 11 the PCM assembly is regenerated.
  • these valves are controllable valves that are operationally coupled to a control system of the climate control system.
  • valves 34 and 35 When valves 34 and 35 are fully opened and valve 33 is open, channel 32 and 17 will form a loop that allows air to flow from the heat exchanger 11 to the PCM assembly and back again. In the mean time, the heat exchanger will receive temperature-controlled fluid via conduit 9 from the heating/cooling machine 5.
  • valves 33, 34 and 35 can of course also be partially opened in order to allow some conditioned air to enter the building if needed.
  • the air conditioning system 4 can have additional air displacement units installed in order to pass the air through the PCM assembly 31 and the heat exchanger 11.
  • valve 35 can be opened end the outside air can be used to regenerate the PCM assembly, thus reducing the energy use even further.
  • the PCM assembly is positioned upstream of the heat exchanger 11.
  • the day temperature can be between 30 and 40 °C and the air is humid, more than 70% (relative humidity).
  • the air is first dried.
  • that air is subsequently cooled to 23-28°C.
  • the air is cooled to between 24 - 26°C.
  • the PCM material in the PCM assembly is selected to have as a melting temperature that selected temperature.
  • heat exchanger 11 that air is further cooled to a set temperature of for instance 16-25 °C.
  • the air leaves the air conditioning system at a temperature of 19-21 °C.
  • the PCM capacity should be up to 50 % of the required capacity of the air conditioning system 4 during daytime or working hours of people using the building.
  • the use of the PCM assembly allows a reduction of the capacity of the heating/cooling machine with up to 50%.
  • the temperature conditioning system 3 inside the room 2 of figure 2 uses the same inventive principle and also has a (usually smaller) PCM assembly 41 installed. It is evident that this temperature conditioning system 3 may also be a full climate control system that also controls humidity, and for instance filters the air. Usually, this local system can be coupled an overall control system that also controls the air conditioning system. Alternatively, system can be laid out in such a way that the overall control system provides a basic room temperature of for instance 19-24°C. Each room or set of rooms can have its local control system that allows the room temperature to be set locally as required.
  • the ceiling 21 in room 2 in this embodiment is still installed, but may also be left out.
  • the room 2 has a local climate control subsystem 3 that has the PCM assembly, a heat exchanger 40 that is in fluid communication with the heating/cooling machine 5.
  • the local system 3 of room 2 may further have an air displacement device 44. This usually is a ventilator.
  • the local subsystem system has a channel allowing air from the room to enter the system, pass the air displacement device 44, the PCM assembly, the heat exchanger 40, an exit the system again into the room.
  • Such a system is for instance in general disclosed in EP1509738 and in L1029355 .
  • the local system has a channel 42 that allows air to circulate from the heat exchanger back to the air displacement device 44. Additionally, the local system has valves 43, 44 and 45. Valves 44 and 45 allow closing off the air intake and air exit of the local system. When additionally opening valve 43, channel 42 becomes a return channel and a loop is now created that allows air to flow back and forth between the PCM assembly 41 and the heat exchanger 40 in order to regenerate the PCM assembly.
  • PCM material is installed that has a melting temperature of 16-25 °C, in an embodiment 19-21 °C.
  • the heat exchanger can than be provided downstream of the PCM assembly in order to cool the air coming from the PCM assembly further.
  • FIG 3 the operation of the combined air conditioning system 4 and the local conditioning system of figure 2 is illustrated in daytime operation and in figure 4 in nighttime operation, in a tropical environment.
  • the daytime temperature usually is 30- 40°C during 12 hours, and the nighttime temperature is 20-30°C during 12 hours.
  • the heating/cooling machine 5 is a cooling machine
  • the PCM assemblies 31 and 41 are cooling, i.e., the PCM material is slowly melting.
  • the cooling machine 5 can be running on full capacity and the power sources 6 also can be running in full load.
  • valves 33 and 43 are closed.
  • the PCM assemblies 31 and 41 together with respective heat exchangers 11 and 40 cool the warm incoming air.
  • Valves 34, 35 and 45 and 46 are open. In room 2, warm air enters the local system at inlet 47 and cooled air exits in flow 48.
  • the inlet 47 and outlet 48 can be positioned at other position.
  • Cooling machine 5 keeps on running like daytime, but the cooling demand is much lower or almost zero. Valves 33 and 43 are now opened and a loop is created.
  • Cooled air from the heat exchangers 11 and 40 is now passed through the PCM assemblies 31 and 41 and cooled again in order to regenerate (freeze) the PCM material. Valves 34, 35 and 47, 48 are now at least partially closed.
  • the air conditioning system 4 now passes very little to no air to the rooms 2. In this embodiment, the cooled fluid from conduit 10 is not passed through the cooling ceiling 21 any more, but bypasses the cooling ceiling 21 and is now directly passed to the heat exchanger 40.
  • an air conditioning system 4 is combined with a local system.
  • the local system can also be called a climate control system as it at least controls the temperature at least partly.
  • Other features like a filter and humidity control can also be implemented in this local climate system.
  • the air conditioning system 4 of figure 2 is now depicted as a separate system that in fact is an embodiment of the climate system of the current invention.
  • the same reference numbers have at least the same function as in figure 2.
  • Such a climate control system can be a stand-alone unit placed outside a building, even in a transportable unit. Alternatively, the components can be integrated into a building.
  • the required installed heating/cooling machine can be halve of the usual size even if the outside temperature does not drop below the set operational temperature that needs to be maintained for instance during working hours. Thus, at least 50 % can be saved in these situations. These situations for instance also occur when an installed climate system needs to be replaced. The climate situations for instance occur in tropical regions. These climate situations may also occur in cold regions.
  • a control system 50 is further shown that operates the air conditioning system 4 and that can be part of such a system.
  • a control system may comprise a computer running control software.
  • the control system is operationally coupled to air displacement device 60 and to fluid displacement device 61.
  • sensors 62-65 can be operationally coupled to such a control system 50.
  • Sensor 62 can be one or more sensors for measuring temperature, flow and/or humidity.
  • Sensor 63 can be one or more sensors for measuring flow and/or temperature.
  • Sensor 64 can be one or more sensors for measuring flow, temperature and/or humidity,
  • Sensor 65 can be one or more sensors for measuring flow, temperature, humidity, and carbon dioxide levels.
  • control system 50 The operation and modes of operation for regenerating PCM material of control system 50 in air conditioning system 4 are also described above.
  • the arrows towards control system 50 indicate information going to the control system, and arrows from the control system are control signals to for instance displacement devices, and controllable valves.
  • Figure 6 separately shows a local climate system having the elements of figure 2.
  • This particular embodiment shows a climate system that takes air from a room and brings it to a desired temperature in order to control the temperature in the room.
  • the room 2 can for instance be ventilated using natural ventilation.
  • the system of figure 2 can provided with one single centralised control system that is operationally coupled to the valves in order to open and closed them at least partially in order to switch between modes of operation.
  • the control system further is operationally coupled to air displacement devices that pass air though the heat exchangers and through the PCM assemblies.
  • the control system can be operationally coupled to a displacement device that provides fluid from the cooling/heating machine 5.
  • the control system can also be operationally coupled to various temperature sensors to check the local temperatures and check the operation of the climate control system. For instance the temperature of the outside air entering the air conditioning system 4 can be determined.
  • its humidity can be determined using a humidity sensor operationally coupled to the control system.
  • the control system often is a computer system running software which, when running on said computer system, performs the operational or method steps described. In particular, the steps of switching and controlling the modes of operation discussed above can be controlled in that way.
  • the invention is used for flows of air passing the PCM material. 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.
  • the cooling or heating fluid running from the heating/cooling machine is a liquid, often water.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
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  • Combustion & Propulsion (AREA)
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  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention concerne un système de conditionnement d'air, comportant un ensemble d'échange de chaleur à accumulation de chaleur latente du type à matériau à changement de phase dans un conduit pour de l'air de ventilation, un dispositif de réglage de température de l'air dans un conduit pour de l'air de ventilation, et un conduit en boucle de recirculation pour faire circuler de l'air, ledit conduit en boucle de recirculation comprenant ledit ensemble d'échange de chaleur à accumulation de chaleur latente du type à matériau à changement de phase et ledit dispositif de réglage de température de l'air.
PCT/EP2011/063647 2011-08-08 2011-08-08 Système de conditionnement d'air Ceased WO2013020583A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2011/063647 WO2013020583A1 (fr) 2011-08-08 2011-08-08 Système de conditionnement d'air
PCT/EP2012/065551 WO2013021019A1 (fr) 2011-08-08 2012-08-08 Système de conditionnement d'air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/063647 WO2013020583A1 (fr) 2011-08-08 2011-08-08 Système de conditionnement d'air

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WO2013020583A1 true WO2013020583A1 (fr) 2013-02-14

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP3295557A4 (fr) * 2015-06-30 2018-10-24 Glasspoint Solar, Inc. Matériaux à changement de phase pour le refroidissement de composants électroniques enfermés, y compris pour la collecte d'énergie solaire, et systèmes et procédés associés
EP3347657A4 (fr) * 2015-09-09 2019-06-19 Netenergy (Naim Energy Technologies, LLC) Système et procédé de refroidissement d'un espace par stockage d'énergie thermique
US10584900B2 (en) 2010-07-05 2020-03-10 Glasspoint Solar, Inc. Concentrating solar power with glasshouses

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WO2003102484A2 (fr) 2002-06-03 2003-12-11 Rubitherm Gmbh Procede de chauffage et de refroidissement d'une piece et d'un batiment comprenant plusieurs pieces
EP1455156A2 (fr) * 2003-03-04 2004-09-08 Imtech Deutschland GmbH & Co. KG Conditioneur de température d'habitat
NL1029355C2 (nl) 2005-06-28 2007-01-02 Harry Schmitz Klimaatplafond.
EP1908809A1 (fr) 2006-10-02 2008-04-09 Harry Schmitz Ensemble comprenant une installation horticole et une installation d'élevage
EP2180108A1 (fr) 2008-10-21 2010-04-28 Autarkis B.V. Activations de panneau de plafond et plafond modulaire comprenant ces panneaux

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WO2003102484A2 (fr) 2002-06-03 2003-12-11 Rubitherm Gmbh Procede de chauffage et de refroidissement d'une piece et d'un batiment comprenant plusieurs pieces
EP1509738A2 (fr) 2002-06-03 2005-03-02 Rubitherm GmbH Procede de chauffage et de refroidissement d'une piece et d'un batiment comprenant plusieurs pieces
EP1455156A2 (fr) * 2003-03-04 2004-09-08 Imtech Deutschland GmbH & Co. KG Conditioneur de température d'habitat
NL1029355C2 (nl) 2005-06-28 2007-01-02 Harry Schmitz Klimaatplafond.
EP1908809A1 (fr) 2006-10-02 2008-04-09 Harry Schmitz Ensemble comprenant une installation horticole et une installation d'élevage
EP2180108A1 (fr) 2008-10-21 2010-04-28 Autarkis B.V. Activations de panneau de plafond et plafond modulaire comprenant ces panneaux

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ROGER E. FRECHETTE, III, P.E. LEED, RUSSEL GILCHRIST: "Seeking zero Energy", CIVIL ENGINEERING -ASCE, vol. 79, no. 1, January 2009 (2009-01-01), pages 38 - 47

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10584900B2 (en) 2010-07-05 2020-03-10 Glasspoint Solar, Inc. Concentrating solar power with glasshouses
EP3295557A4 (fr) * 2015-06-30 2018-10-24 Glasspoint Solar, Inc. Matériaux à changement de phase pour le refroidissement de composants électroniques enfermés, y compris pour la collecte d'énergie solaire, et systèmes et procédés associés
EP3347657A4 (fr) * 2015-09-09 2019-06-19 Netenergy (Naim Energy Technologies, LLC) Système et procédé de refroidissement d'un espace par stockage d'énergie thermique

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