WO2023018205A1 - Unité de refroidissement destinée à être appliquée sur un panneau solaire et utilisation associée - Google Patents

Unité de refroidissement destinée à être appliquée sur un panneau solaire et utilisation associée Download PDF

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Publication number
WO2023018205A1
WO2023018205A1 PCT/KR2022/011897 KR2022011897W WO2023018205A1 WO 2023018205 A1 WO2023018205 A1 WO 2023018205A1 KR 2022011897 W KR2022011897 W KR 2022011897W WO 2023018205 A1 WO2023018205 A1 WO 2023018205A1
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WIPO (PCT)
Prior art keywords
solar panel
solvent
crystal layer
solid crystal
porous layer
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Application number
PCT/KR2022/011897
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English (en)
Korean (ko)
Inventor
강용태
김성곤
박종하
Original Assignee
고려대학교 산학협력단
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Publication of WO2023018205A1 publication Critical patent/WO2023018205A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40—Thermal components
    • H02S40/42—Cooling means
    • H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/20—Optical components
    • H02S40/22—Light-reflecting or light-concentrating means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40—Thermal components
    • H02S40/42—Cooling means
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a cooling unit and its use for solar panel applications.
  • the present invention was supported by group research support (R&D) of the Ministry of Science and ICT (Task identification number: 1711135257, research management specialized institution: National Research Foundation, research project name: Plus Energy Building Innovation Technology Research Center, Host organization: Korea University Industry-University Cooperation Foundation, Research period: 2020.07.01 ⁇ 2021.05.31, contribution rate: 1/1).
  • R&D group research support
  • cooling means have been developed to keep the temperature of the solar cell constant and to perform stable power generation.
  • air natural convection, air forced convection, liquid cooling, phase change material (PCM), heat pipe, and thermoelectric Thermoelectric cooling has been mainly used.
  • thermoelectric cooling method is a method of cooling on the principle that a temperature difference is generated when electricity is supplied, and there is a difficulty that it has not been commercialized in that construction cost and energy consumption are high.
  • the cooling unit may include a porous layer
  • the porous layer is saturated with a solvent
  • the solvent provides a cooling unit for application to a solar panel, in which an endothermic reaction proceeds when dissolved with the solid crystal layer.
  • a solar panel is provided wherein the porous layer is in contact with the solar panel when the cooling unit is applied.
  • the porous layer is a solid crystal layer is applied to the opposite side of one side of the porous layer in contact with the solar panel,
  • the porous layer is saturated with a solvent
  • the solvent provides a solar panel in which an endothermic reaction proceeds when dissolved with the solid crystal layer.
  • a cooling unit according to an embodiment of the present invention is a cooling unit for application to a solar panel
  • the cooling unit may include a porous layer
  • the porous layer is saturated with a solvent
  • the solvent may be one in which an endothermic reaction proceeds when dissolved with the solid crystal layer.
  • Porous materials After saturating the solvent contained in the cooling unit, a solid crystal layer that induces an endothermic reaction is applied to the surface.
  • Porous materials generally have the property of adsorbing a large amount of solvent at a low temperature and desorbing the solvent at a high temperature.
  • the solubility of materials constituting the solid crystal layer increases as the temperature rises.
  • the porous layer is saturated with the solvent, and when the solid crystal layer is applied to the surface of the porous layer, the temperature of the solar panel rises when radiant heat is supplied, which causes the porous layer to induces desorption of the saturated solvent. At this time, radiant heat is used to desorb the solvent, preventing the panel from rising in temperature.
  • the generated liquid partially dissolves the solid crystal layer, absorbs heat, and lowers the surrounding temperature.
  • the porous material desorbs the liquid, and the solubility of the liquid in the solvent increases, leading to an endothermic reaction.
  • a porous material having a property of adsorbing a large amount of solvent at a low temperature and desorbing the solvent at a high temperature As an example of the porous material constituting the porous layer, a zeolite structure, a metal organic framework (MOF), an isoreticular MOF (IRMOF) structure, UiO, a zeolite-imidazolate framework (ZiF), and the like may be used.
  • MOF metal organic framework
  • IRMOF isoreticular MOF
  • ZiF zeolite-imidazolate framework
  • IRMOF-1 IRMOF- At least one selected from the group consisting of 16, UiO-66, UiO-67, UiO-68, MiL-53, MiL-88, MiL-100, MiL-101, LiC-1, ZIF-8 and ZIF-90
  • any porous material suitable for use in this cooling unit may be used.
  • the solid crystal layer may be made of any one or more selected from the group consisting of barium hydroxide, ammonium chloride, thionyl chloride, potassium chloride and sodium carbonate, but is not limited to any one or more, and is suitable for use in this cooling unit. Any material may form a solid crystal layer.
  • the solvent is ammonium chloride
  • the solvent is water
  • the solvent is cobalt sulfate heptahydrate and
  • the solvent may be ethanoic acid, but the solvent is not limited thereto, and any other solvent compatible with the driving principle may be used.
  • the solvent saturated in the porous layer is
  • the porous layer preferably has a shape applied to a thickness of 0.1 to 2 mm, but is not limited thereto.
  • the solvent is preferably added in an amount of 0.18 to 0.21 times the mass of the porous layer, but is not limited thereto.
  • An example of a more preferable addition amount of the solvent is to add 0.191 times the mass of the porous layer.
  • the solid crystal layer is preferably applied to be 4.5 to 5.4 times the mass of the solvent, but is not limited thereto.
  • An example of a more preferred mass of the solid crystal layer is 4.5 to 5.4 times the mass of the solvent.
  • any solar panel widely known to those skilled in the art that is allowed by the physical structure of the solar panel can be used, and any terms used in the present invention are not applicable to the cooling unit. It does not limit the category of solar panels that can be used.
  • the method of applying the cooling unit to the solar panel or the method of applying the solid crystal layer to the porous layer is a method of coating, coating, bonding, etc. to ensure the performance of the cooling unit for the solar panel. Any application method that can be used by them can be used without limitation.
  • the present invention also provides a solar panel wherein the cooling unit is applied to the rear surface, wherein the porous layer is in contact with the solar panel when each unit is applied.
  • FIG. 1 An example of a specific structure of a solar panel to which the cooling unit is applied to the rear surface is shown in FIG. 1 .
  • a porous layer is applied to the back of the solar panel that receives sunlight so that the solar panel does not interfere with receiving sunlight.
  • the porous layer is applied so that it touches the solar panel.
  • the porous layer is a solid crystal layer is applied to the opposite side of one side of the porous layer in contact with the solar panel,
  • the porous layer is saturated with a solvent
  • the solvent provides a solar panel in which an endothermic reaction proceeds when dissolved with the solid crystal layer.
  • the porous layer is zeolite 13X, zeolite 5A, zeolite 3A, zeolite Y, SAPO-34, SSZ-14, MOF-5, MOF-74, MOF-99, MOF-177, MOF-235, MOF-253, IRMOF- 1, selected from the group consisting of IRMOF-16, UiO-66, UiO-67, UiO-68, MiL-53, MiL-88, MiL-100, MiL-101, LiC-1, ZIF-8 and ZIF-90 It is not limited to one or more of the above, and any porous layer suitable for use in the present cooling unit may be used.
  • the solid crystal layer may be made of any one or more selected from the group consisting of barium hydroxide, ammonium chloride, thionyl chloride, potassium chloride and sodium carbonate, but is not limited to any one or more, and is suitable for use in this cooling unit. Any material may form a solid crystal layer.
  • the solvent is ammonium chloride
  • the solvent is water
  • the solvent is cobalt sulfate heptahydrate and
  • the solvent may be ethanoic acid, but the solvent is not limited thereto, and any other solvent compatible with the driving principle may be used.
  • the solvent saturated in the porous layer is
  • the solid crystal layer is dissolved after being detached from the porous layer by the temperature rise of the solar panel,
  • the solid crystal layer dissolved therein may be recrystallized and then the solvent adsorbs to the porous layer.
  • the solid crystal layer dissolved therein may be recrystallized and then the solvent adsorbs to the porous layer.
  • the porous layer preferably has a form applied to a thickness of less than 2 mm, but is not limited thereto.
  • the solvent is preferably added in an amount of 0.191 times the mass of the porous layer, but is not limited thereto.
  • the solid crystal layer is preferably applied in an amount of 4.93 times the mass of the solvent, but is not limited thereto.
  • the cooling unit of the present invention can lower the ambient temperature through a reversible solvent adsorption and/or desorption process between the porous material and the solid crystal layer applied to the porous material. Therefore, the cooling unit of the present invention has excellent cooling performance despite low construction cost, no maintenance, and no energy consumption for driving.
  • FIG. 1 is a schematic diagram showing an example of a specific structure of a solar panel to which a cooling unit is applied to a rear surface thereof.
  • Figure 2 compares the solvent absorption ability of zeolite 13X according to temperature.
  • FIG. 3 is a schematic diagram of an experimental device used to analyze cooling capacity.
  • Figure 7 shows the temperature change in the form of dispersing ammonium nitrate crystals and water.
  • Figure 8 shows the temperature change in the cooling unit of the present invention manufactured in Example 1.
  • Example 9 is an analysis of reversible cooling performance of the cooling unit of Example 1.
  • Example 1 Fabrication of a cooling unit for application to a solar panel
  • a cooling unit for application to a solar panel was fabricated.
  • Zeolite 13X was used as the porous material, and NH 4 NO 3 and H 2 O were used as the endothermic solvent-solvent pair.
  • the water adsorption capacity of zeolite 13X reached 10 mmol/g at 20 °C and the adsorption capacity at 70 °C was 3 mmol/g.
  • the theoretical solubility of NH 4 NO 3 was 1 g at 20 °C and 5 g at 70 °C.
  • the H 2 O adsorption capacity of zeolite 13X was measured using a solvent absorption process analyzer (Micromertics, Flex) for each temperature, and the results are shown in FIG. 2. As a result of the analysis, it was confirmed that the adsorption amount of water at 40°C was lower than that at 20°C, regardless of the relative pressure.
  • the solid crystal layer was not applied, so that only the porous layer saturated with water was present, it was placed on a heating plate (aluminum plate, 100 mm * 100 mm and thickness 10 mm), and then heat was applied. .
  • a heating plate aluminum plate, 100 mm * 100 mm and thickness 10 mm
  • heat was applied.
  • constant heat was applied to 50W as a heating plate, and all sides of the heating plate were designed to be adiabatic.
  • a thermometer was attached to the heating plate to measure the temperature.
  • the structure of the detailed experimental device is shown in FIG. 3, and the result of analyzing the temperature change is shown in FIG.
  • the temperature of the heating plate was maintained at 200 °C, and when constant heat was applied, water regeneration of zeolite 13X could be observed.
  • Example 2 The result of analyzing the phenomenon when heat was applied after placing the solid crystal layer of ammonium nitrate in which water was dispersed on a heating plate under the same experimental conditions as in Example 2 is shown in FIG. 5 .
  • the temperature rises at the lower part so that ammonium nitrate is dissolved.
  • endothermic energy is generated and the temperature of the surroundings is lowered.
  • the temperature inside the reactor was maintained at about 30 °C, and it was confirmed that cooling using an endothermic reaction was feasible.
  • Example 2 The cooling effect using zeolite 13X and water confirmed in Example 2 was latent cooling, and the cooling effect using ammonium nitrate and water confirmed in Example 3 was endothermic cooling.
  • FIGS. 6 and 7 the temperature change over time when zeolite 13X, ammonium nitrate, and water are all applied to the top of the heating plate. is shown in Figure 8.
  • the cooling effect applied to the cooling unit of Example 1 may include natural convection, forced convection, latent cooling, and endothermic cooling, and detailed cooling effects are described in [Table 1] below.
  • Example 1 Although the cooling unit of the present invention prepared in Example 1 was tested in a state where the heat energy supply density was much higher than that of solar energy, it was confirmed that the temperature rise gradient per hour was much lower, which is because the heat dissipation ability of the cooling unit was much better. It seems to be because It is inferred that this is because natural convection, forced convection, latent cooling, and endothermic cooling are all applied.
  • Example 1 In order to analyze the reversible cooling performance of the cooling unit of Example 1, the temperature of the heating plate was heated to 50 ° C and cooled to room temperature repeatedly to measure the temperature change slope of the cooling unit, and the results are shown in FIG. . As a result, the same cooling performance was confirmed despite repeated experiments. Specifically, the crystal layer formed when ammonium nitrate was applied on the upper surface of zeolite 13X is shown in FIG. 10 . It was observed with the naked eye that water was desorbed from zeolite 13X at 50 °C and that water dissolved ammonium nitrate.

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Abstract

La présente invention concerne une unité de refroidissement destinée à être appliquée sur un panneau solaire et une utilisation associée. L'unité de refroidissement de la présente invention peut abaisser une température de l'environnement par l'intermédiaire d'un processus d'adsorption et/ou de désorption de solvant réversible entre un matériau poreux et une couche de cristaux solides appliquée sur le matériau poreux. Par conséquent, l'application de l'unité de refroidissement de la présente invention sur un panneau solaire permet d'obtenir une performance de refroidissement remarquablement excellente pour le panneau solaire tout en nécessitant de faibles coûts de construction, aucune maintenance ni réparation, ni aucune consommation d'énergie pour un entraînement.
PCT/KR2022/011897 2021-08-13 2022-08-10 Unité de refroidissement destinée à être appliquée sur un panneau solaire et utilisation associée WO2023018205A1 (fr)

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KR1020210107474A KR102586302B1 (ko) 2021-08-13 2021-08-13 태양광 패널에 적용하기 위한 냉각 유닛 및 이의 용도
KR10-2021-0107474 2021-08-13

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0139054B1 (ko) * 1991-02-08 1998-04-28 야마자끼 료오이찌 냉각제
US6634183B1 (en) * 1998-12-18 2003-10-21 Solsam Sunergy Ab Chemical heat pump
KR20100098495A (ko) * 2007-11-29 2010-09-07 클라이메이트웰 에이비 (퍼블릭) 열 발생 및/또는 냉각을 위한 열 태양 에너지 수집기
KR20150047761A (ko) * 2013-10-25 2015-05-06 주식회사 아모그린텍 단열 패널 및 그를 구비한 냉각 장치
KR20160039503A (ko) * 2014-10-01 2016-04-11 에스케이이노베이션 주식회사 이차 전지의 흡열 장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112383278A (zh) * 2020-11-12 2021-02-19 伦伟锋 一种野外太阳能板安全降温保护装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0139054B1 (ko) * 1991-02-08 1998-04-28 야마자끼 료오이찌 냉각제
US6634183B1 (en) * 1998-12-18 2003-10-21 Solsam Sunergy Ab Chemical heat pump
KR20100098495A (ko) * 2007-11-29 2010-09-07 클라이메이트웰 에이비 (퍼블릭) 열 발생 및/또는 냉각을 위한 열 태양 에너지 수집기
KR20150047761A (ko) * 2013-10-25 2015-05-06 주식회사 아모그린텍 단열 패널 및 그를 구비한 냉각 장치
KR20160039503A (ko) * 2014-10-01 2016-04-11 에스케이이노베이션 주식회사 이차 전지의 흡열 장치

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