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WO2015028471A1 - Système d'accumulation de chaleur pour une serre - Google Patents

Système d'accumulation de chaleur pour une serre Download PDF

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Publication number
WO2015028471A1
WO2015028471A1 PCT/EP2014/068093 EP2014068093W WO2015028471A1 WO 2015028471 A1 WO2015028471 A1 WO 2015028471A1 EP 2014068093 W EP2014068093 W EP 2014068093W WO 2015028471 A1 WO2015028471 A1 WO 2015028471A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage device
heat
heat storage
storage
liquid
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/EP2014/068093
Other languages
German (de)
English (en)
Inventor
Uwe Schmidt
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.)
Humboldt Universitaet zu Berlin
Original Assignee
Humboldt Universitaet zu Berlin
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 Humboldt Universitaet zu Berlin filed Critical Humboldt Universitaet zu Berlin
Publication of WO2015028471A1 publication Critical patent/WO2015028471A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Definitions

  • the invention relates to a heat storage device for a greenhouse according to the preamble of claim 1 and a greenhouse installation with a heat storage device.
  • Such a heat storage device for a greenhouse comprises at least one storage tank, a storage liquid which is filled in the storage tank and forms a surface for storing heat and a heating system of a greenhouse, which is in communication with the storage tank such that storage liquid introduced into the heating system can be.
  • the energy production in greenhouses can have a considerable efficiency of, for example, 50%, so that the solar energy production in a greenhouse can be economically interesting.
  • the heat in order to use the heat gained in a greenhouse for the heating of the greenhouse, the heat must be stored for a long time, so that the heat obtained, for example, on warm days for heating, for example, on cold days can be kept in stock.
  • a floating photovoltaic array is known, which is connected to a hydroelectric power plant at a reservoir or a coastal water to feed photovoltaically generated electricity into a power grid of the hydroelectric power plant.
  • Object of the present invention is to provide a heat storage device for a greenhouse and a greenhouse system with a heat storage device available that allow the storage of heat over a longer period of time in a simple, cost-effective manner.
  • the heat storage device has a covering device, which is arranged floating on the surface formed by the storage liquid and covers the surface.
  • the present invention is based on the idea of using a water storage system in a greenhouse system, as it is often provided, for example, for receiving rainwater, as a heat storage device.
  • a water reservoir is regularly formed as a surface storage, for example in the form of an at least partially embedded in the ground storage tank and receives water as a storage liquid.
  • the preferably at least partially embedded in the ground reservoir is advantageously thermally insulated on its side walls and on its bottom wall by means of a suitable insulating layer and also sealed by a suitable sealing layer against leakage of liquid.
  • the insulation layer may be sealed, for example, by rigid foam sheets (available under the brand name Styrodur) provided on the side walls and the bottom wall.
  • the sealing layer can be formed for example by a suitable liquid-tight film.
  • the soil of a soil provides a natural insulation barrier, which allows an effective isolation of Speicherbecks at an economically acceptable cost.
  • the cover means may be formed by individual segments in the manner of pontoons floating on the storage liquid.
  • the segments of the covering device can in this case for example by hard foam boards (available under the Brand name Styrodur) be formed, on the one hand on the storage liquid, especially water, swim and on the other hand can provide good thermal insulation.
  • the covering device has at least one frame segment and at least one support segment adjustably arranged on the frame segment.
  • the at least one support segment for example, viewed in a plan view of the surface of the storage liquid, have a circular shape with a rotational symmetry axis directed perpendicular to the surface, wherein the at least one support segment can be pivoted about its rotational symmetry axis relative to the frame segment.
  • a suitable drive means may be provided with a motor and an adjustment mechanism, wherein the motor is arranged for example outside of the storage tank and an adjusting mechanism in the form of a drive shaft via suitable deflection gear, for example with drive spindles for adjusting one or more support segments is connected to one or more support segments in operative connection and thus can simultaneously adjust a plurality of support segments.
  • a photovoltaic device for photovoltaic power generation can be arranged, which can be aligned by adjusting the support segment relative to the frame segment to the sun.
  • At least one sealing element may be provided for sealing against a passage of moisture.
  • the sealing element may in this case be designed to at least largely prevent moisture leakage out of the reservoir, for example by evaporation, so that moisture can not readily pass out of the reservoir through the segments of the cover.
  • the sealing element can be designed to permit a seepage of, for example, rainwater into the storage tank, so that liquid can pass from the outside through the covering device into the storage tank.
  • the at least one frame element advantageously connects via an edge segment to a side wall of the storage tank, wherein the edge segment with so the frame segment is operatively connected, that the frame segment and the edge segment can be moved to each other at least by a certain distance along the surface of the storage liquid.
  • the frame segment for example, partially rest on the edge segment, so that the frame segment and the edge segment are tangent to each other.
  • the position of the frame segment can be adjusted relative to the edge segment to compensate for a change in size of the surface of the storage liquid in a vertical movement of the surface due to a level change in the storage tank.
  • An additional inlet for introducing liquid into the storage tank can be provided on the covering device, beyond the transitions formed between the individual segments.
  • the inlet is formed by the gap-like transitions between the segments, which may additionally be closed by permeable sealing elements for a leak, so that, for example, rainwater can seep into the reservoir from outside between the segments.
  • one or more photovoltaic elements in the form of solar cells are provided, which are used for photovoltaic power generation.
  • the energy generated by the photovoltaic elements can be used, for example, to operate the greenhouse system whose component is the heat storage device, and also for operating the heating system and for the drive device for adjusting the support segments, so that the energy supply of the greenhouse system can at least be supported. It is also conceivable to feed electrical energy generated at the photovoltaic elements in a power grid.
  • the storage liquid is preferably water. Water is conveniently available and also has a good heat storage capacity of about 4.18 kJ / kg K.
  • phase change materials PCM
  • the storage capacity of the heat storage device can be improved even further Designated latent heat storage, save energy by exploitation a phase transition (for example, from solid to liquid) and give in reversed phase transition (for example, from liquid to solid) energy.
  • the heating system with which the storage tank is in fluid communication, may have at least one heat pump and a heat exchanger device connected to the heat pump.
  • the heat pump and the associated heat exchanger device for example in the form of arranged in a greenhouse, fluid-flow spiral finned tubes, the heat storage device can be operated as a mixed storage at relatively low water temperatures (for example in a temperature range between 5 ° C and 45 ' ⁇ ), which the on the surface of the storage liquid resulting heat losses additionally reduced.
  • FIG. 1 shows a schematic sectional view through a heat storage device with a storage tank and a storage liquid located therein;
  • FIG. a plan view of the heat storage device;
  • Fig. 3 is a schematic view of the heat storage device in
  • a heat storage device 1 comprising a reservoir 2, which is at least partially embedded as an upwardly open basin in a bottom 7, for example, the soil at the location of a greenhouse system, and at least in the region of its upper edge of a ( Earth) Wall 70 is surrounded.
  • a storage liquid 3 for example water, which serves to store heat on the one hand and on the other hand optionally as a reservoir for an irrigation system of a greenhouse system.
  • the storage tank 2 has a bottom wall 21 and adjoining the bottom wall 21 side walls 20. On the bottom wall 21 and the side walls 20, the storage tank 2 by means of an insulating layer 22nd thermally insulated from the surrounding soil 7.
  • the insulating layer 22 may, for example, be realized by one or more layers of rigid foam plates, wherein on a side facing inside the storage tank 2 side of the insulating layer 22 is a sealing layer 23 in the form of a liquid-impermeable film or the like, by means of which the storage tank 2 against the Floor 7 is sealed liquid-tight.
  • the insulating layer 22 may also be formed of a different material, for example a heat-insulating bulk material, e.g. Glass granules.
  • the storage tank 2 is open at the top. However, in order to avoid heat loss on a surface 30 of the storage liquid 3, a covering device 4 is provided, which floats on the storage liquid 3 and consists of individual segments 40-42, which float in the manner of pontoons on the storage liquid 3 and cooperate in such a way in that the storage tank 2 is thermally insulated towards the top.
  • the segments 40-42 may be made of rigid foam (available under the brand name Styrodur) and completely cover the storage basin 2 at the top.
  • the individual segments 40-42 can in principle also be made of other materials.
  • segments 40-42 may also be used as evacuated hollow bodies, e.g. made of glass or plastic, be realized whose walls enclosing a cavity, for example, can also be transparent, to allow light into the storage tank.
  • the cover 4 is composed of different segments.
  • the covering device 4 has one or more frame segments 41, into which the support segments 40 are inserted such that the support segments 40 can be adjusted relative to the frame segments 41.
  • the support segments 40 are in this case in the plan view (in a viewing direction perpendicular to the surface 30, corresponding to the drawing plane in Fig. 2) circular and inserted into corresponding recesses of the frame segments 41 such that the support segments 40 about their rotational symmetry axis S along an adjustment V can be rotated relative to the frame segments 41.
  • the support segments 40 are used to carry photovoltaic elements 5 for photovoltaic power generation on an upper side 43 of the covering device 4 Adjusting the support segments 40 about their rotational symmetry axis S, the photovoltaic elements 5 are aligned with the sun, so that the photovoltaic elements 5 can be tracked during the day of the sun.
  • edge segments 42 are provided, via which the frame segments 41 adjoin the side walls 20 of the storage tank 2. 2, edge segments 42 are provided only on the left and lower side walls 20.
  • Corresponding edge segments 42 may, however, also be used on the right and upper side walls 20 of the storage tank 2.) As can be seen in FIG the frame segments 41 at least in sections on the associated edge segments 42, so that the frame segments 41 can be moved at least by a certain distance along the surface 30 relative to the edge segments 42. This movable connection of the frame segments 41 with the edge segments 42 compensates for a change in the surface area of the surface 30 as a result of a change in level of the storage liquid 3 in the reservoir 2. At a level change, the frame segments 41 can move along the surface 30 relative to the edge segments 42, so that a change in size of the surface 30 compensated and regardless of the level of the storage liquid 3 complete coverage of the surface 30 can be provided by the cover 4.
  • sealing elements 44 are arranged in the form of, for example, foam strips, which seal the transition between the segments 40-42.
  • the seal can be designed such that a moisture leakage from the reservoir 2 is at least reduced, but at the same time a liquid inlet, for example, infiltration of rainwater into the reservoir 2, from outside Shen is possible.
  • Einläute 45 are created for rainwater from the outside, so that liquid can penetrate from the outside into the reservoir tank 2.
  • a drive device 6 For adjusting the support segments 40 relative to the frame segments 41, a drive device 6 is provided.
  • the drive device 6 has a motor 60, which is coupled via an adjustment mechanism 61 with the support segments 40, so that via the adjustment mechanism 61 all support segments 40 can be moved in a uniform manner.
  • the adjusting mechanism 61 is formed by a drive shaft 600 of the motor 60, which via angular gear 610 with drive spindles 61 1 such is coupled, that a rotational movement of the drive shaft 600 is converted via the angular gear 610 in a rotational movement of the drive spindles 61 1.
  • phase change materials for example, salt or paraffin-based
  • storage elements 31 serve to increase the heat capacity of the heat storage device 1 and allow based on a phase transition, an additional, efficient storage of heat.
  • the storage tank 2 is in fluid communication with a heating system of a greenhouse 8, which has a heat pump 80 and a heat exchanger device 81 in the form of, for example, installed in the greenhouse 8 piping.
  • the heat storage device 1 can be performed as a mixed storage at relatively low water temperatures, for example at water temperatures between 5 ' ⁇ and 45' ⁇ .
  • the comparatively low maximum temperature of for example 45 ° C leads to a reduction of heat losses at the surface 30 of the storage liquid 3, because due to the comparatively low heat difference to the ambient air, there is a comparatively low heat radiation.
  • warm water can be conducted from the storage tank 2 to the heat pump 80, which extracts heat from the water and transfers it to the heat exchanger device 81 as useful heat.
  • the heat exchanger device 81 can thereby be used for heating the greenhouse 8, wherein water is passed from the storage tank 2 after passing through the heat pump 80 back into the storage tank 2.
  • condensation liquids can be conducted from the greenhouse 8 to the storage tank 2.
  • the storage tank 2 may also be connected to an irrigation system of the greenhouse 8 so that the water stored in the storage tank 2 can also be used for watering plants in the greenhouse 8.
  • the idea underlying the invention is not limited to the above-described embodiments, but can also be realized in completely different types of embodiments.
  • a storage liquid other than water can in principle also be used.
  • the covering device in a different manner, for example by using films which seal the top of the storage tank liquid-tight, so that from outside liquid does not readily enter the storage tank and also leak from the inside no liquid from the storage tank 2 can.
  • the reservoir can be used for example as a fish tank for breeding fish.
  • the storage tank is also used for fish farming and it is therefore intended that fish will float in the storage liquid (water) contained in the storage tank, the storage tank is preferably provided with a comparatively low maximum temperature of e.g. Operated at 30 ° C. The water in the reservoir is thus kept below a temperature of 30 ' ⁇ to allow the fish farming.
  • a closable supply opening can additionally be provided in the covering device, via which, for example, feed can be introduced into the storage basin.
  • the cover is at least partially transparent designed to allow light into the reservoir and to create a suitable habitat for fish in the reservoir.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Greenhouses (AREA)

Abstract

Système d'accumulation de chaleur (1) pour une serre, comprenant au moins un bassin d'accumulation (2), un liquide d'accumulation (3) versé dans le bassin d'accumulation (2) et formant une surface (30), servant à accumuler la chaleur et un dispositif de chauffage d'une serre (8) raccordé au bassin d'accumulation (2) de sorte que le liquide d'accumulation (3) peut être introduit dans le dispositif de chauffage. Ce système comprend en outre un dispositif de recouvrement (4) placé de manière flottante sur la surface (30) formée par le liquide d'accumulation (3) et recouvrant ladite surface (30). On obtient ainsi un système d'accumulation de chaleur pour une serre, permettant de manière simple et économique d'accumuler de la chaleur, même sur une longue durée.
PCT/EP2014/068093 2013-08-29 2014-08-26 Système d'accumulation de chaleur pour une serre Ceased WO2015028471A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013217289.3A DE102013217289B3 (de) 2013-08-29 2013-08-29 Wärmespeichereinrichtung für ein Gewächshaus
DE102013217289.3 2013-08-29

Publications (1)

Publication Number Publication Date
WO2015028471A1 true WO2015028471A1 (fr) 2015-03-05

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ID=51589258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/068093 Ceased WO2015028471A1 (fr) 2013-08-29 2014-08-26 Système d'accumulation de chaleur pour une serre

Country Status (2)

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DE (1) DE102013217289B3 (fr)
WO (1) WO2015028471A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK202370287A1 (en) * 2023-06-13 2025-01-14 Aalborg Csp As A thermal energy plant for storing thermal energy and a method of providing a thermal energy storage plant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2032606B1 (en) * 2022-07-26 2024-02-05 Friss Holding B V Conditioning system and method for controlling temperature in an interior space

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358099A1 (fr) * 1976-07-16 1978-02-10 Dalle Yves Procedes et dispositifs de culture de plantes
US4108373A (en) * 1974-05-22 1978-08-22 Commissariat A L'energie Atomique Method and an installation for the air-conditioning of greenhouses and frames
EP0005103A1 (fr) * 1978-04-13 1979-10-31 COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel Procédé de climatisation de serres à l'aide d'une eau non douce et de distillation de cette eau et installation en faisant application
DE3031541A1 (de) * 1980-08-21 1982-03-04 Günther 5628 Heiligenhaus Unger Verfahren zur klimatisierung von gewaechshaeusern, glasgedeckten terassen etc.
DE3032047A1 (de) * 1980-08-26 1982-03-25 Bernhard 5040 Brühl Gerhards Gewaechshaus
DE3616623A1 (de) * 1986-05-16 1987-11-19 Kaefer Isoliertechnik Schwimmendes dach fuer tanks zur aufnahme von fluessigkeiten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH701870A2 (de) * 2009-09-17 2011-03-31 Tnc Consulting Ag Schwimmende Photovoltaik-Anordnung.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108373A (en) * 1974-05-22 1978-08-22 Commissariat A L'energie Atomique Method and an installation for the air-conditioning of greenhouses and frames
FR2358099A1 (fr) * 1976-07-16 1978-02-10 Dalle Yves Procedes et dispositifs de culture de plantes
EP0005103A1 (fr) * 1978-04-13 1979-10-31 COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel Procédé de climatisation de serres à l'aide d'une eau non douce et de distillation de cette eau et installation en faisant application
DE3031541A1 (de) * 1980-08-21 1982-03-04 Günther 5628 Heiligenhaus Unger Verfahren zur klimatisierung von gewaechshaeusern, glasgedeckten terassen etc.
DE3032047A1 (de) * 1980-08-26 1982-03-25 Bernhard 5040 Brühl Gerhards Gewaechshaus
DE3616623A1 (de) * 1986-05-16 1987-11-19 Kaefer Isoliertechnik Schwimmendes dach fuer tanks zur aufnahme von fluessigkeiten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK202370287A1 (en) * 2023-06-13 2025-01-14 Aalborg Csp As A thermal energy plant for storing thermal energy and a method of providing a thermal energy storage plant
DK182122B1 (en) * 2023-06-13 2025-08-27 Aalborg Csp As A thermal energy plant for storing thermal energy and a method of providing a thermal energy storage plant

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