WO2010005402A2 - Photovoltaic surfaces cooling system - Google Patents
Photovoltaic surfaces cooling system Download PDFInfo
- Publication number
- WO2010005402A2 WO2010005402A2 PCT/SI2009/000028 SI2009000028W WO2010005402A2 WO 2010005402 A2 WO2010005402 A2 WO 2010005402A2 SI 2009000028 W SI2009000028 W SI 2009000028W WO 2010005402 A2 WO2010005402 A2 WO 2010005402A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- photovoltaic
- reservoir
- cooling
- rinsing
- water
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 239000000110 cooling liquid Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
- H01L31/0521—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
-
- 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 subject of the present invention is a photovoltaic surfaces cooling system by rinsing with or rather circulating of a cooling liquid within a closed system, wherein rainwater is used for cooling in the system with rinsing, said rainwater being collected in a reservoir and allowed to circulate within said system under control thus cooling a photovoltaic surface.
- the invention belongs to class H01 L 31/052 of the international patent classification.
- a technical problem successfully solved by the present invention for the cooling of photovoltaic surfaces is keeping a lower operating temperature of active photovoltaic surfaces thus achieving a higher yield in hot summer sunny days.
- the system of the invention provides for cleanness of photovoltaic surfaces, which additionally contributes to a higher yield.
- photovoltaic surfaces intended for the conversion of sunlight into electricity depends on the captured sun radiation. Photovoltaic surfaces are therefore arranged in such direction and at such angle to capture optimum sun radiation regardless of the time of the year and the hour of the day. Photovoltaic surfaces not only convert useful sunlight into electricity but also get heated, which has a negative impact on their yield. In order to avoid the heating of photovoltaic surfaces, it is reasonable to cool them, i.e. to ensure conditions for the cooling thereof.
- Known versions of photovoltaic systems without cooling reach temperatures beyond 80°C in sunny summer days at low altitudes, which decreases their yield by more than a half.
- a photovoltaic frame assembly comprises air vents that allow the cool air to flow into the frame and thereby cool the photovoltaic module.
- the EP patent No. 1 914 489 describes a photovoltaic module with a cooling system that increases the dimensions of the photovoltaic module, which makes this solution too expensive.
- Figure 1 a schematic view of the photovoltaic surfaces cooling system of the invention by rinsing
- Figure 2 a schematic view of the photovoltaic surfaces cooling system by rinsing with a closed system and with an additional surface of the invention
- the photovoltaic surfaces cooling system of the invention by rinsing that is schematically shown in Figure 1 consists of an oblong nozzle S1 extending above the entire width of a photovoltaic surface FP, a drain Z1 extending at least under the entire width of said photovoltaic surface FP, a drain tube C1 directing used water through a filter F1 to a reservoir R1 , a suction tube C2 directing water to a pump C1 having an electric motor valve pumping water from said reservoir R1 through said suction tube C2 and a pressure tube C3 to said nozzle S1, through which water rinses inclined photovoltaic surface FP.
- Said photovoltaic surface FP is provided with a temperature sensor T1 that controls by means of said pump C1 and a heat exchanger 11 within said reservoir R1 a control assembly E1 and a temperature sensor T2 within said reservoir R1.
- the system for cooling photovoltaic surfaces of the invention by rinsing that has the components as stated above may be additionally arranged on already existing photovoltaic surfaces FP.
- said temperature sensor T1 detects a too high temperature of said photovoltaic surface FP, it turns on said control assembly E1 , said pump C1 pumping water from said reservoir R1 through said suction tube C2 and pressure tube C3 into said nozzle Si , through which water is poured onto said photovoltaic surface FP, which thus gets cooled and cleaned.
- said control assembly E1 switches on a heat exchanger that cools the water in said reservoir R1.
- the most suitable type of water to be used in the system of the invention is rainwater that gets collected upon each rainfall in said drain Z1 and then stored in said reservoir R1. Other type of water containing less limestone may be used as well.
- the system of the invention is useful both for the cooling of photovoltaic surfaces and rinsing same thus achieving a better yield.
- a cooling liquid is conducted through a closed system as follows: a photovoltaic surface FP 1 is sealed in a way that a cooling liquid may run between said surface and a transparent surface P or between a back wall S and said transparent surface P. Said photovoltaic surface FP' may also be adequately insulated by an insulation coat I. Said transparent surface P may be of glass and arranged in front of the front active side of said photovoltaic surface PF'. If said transparent surface P made of insulation glass is positioned in front of said photovoltaic surface PF', the heat from said photovoltaic surface PF' may be used for indirect heating in winter time.
- the system for the cooling of photovoltaic surfaces of the invention by rinsing is thus an easy way of cooling and rinsing photovoltaic surfaces PF, which thus operate with a higher yield, since running water partially takes heat with it into said reservoir R1 and part of it gets evaporated.
- water conducts heat away from said photovoltaic surface PF' and the heat may be used for the heating of sanitary water or for other heating purposes.
Abstract
The subject of the present invention is a photovoltaic surfaces cooling system by rinsing with or rather circulating of a cooling liquid within a closed system, wherein rainwater is used for cooling in the system with rinsing, said rainwater being collected in a reservoir and allowed to circulate within said system under control thus cooling a photovoltaic surface. The photovoltaic surfaces cooling system of the invention by rinsing comprises an oblong nozzle (S1 ) and a drain (Z1) both extending above and under the width of said photovoltaic surface (FP), a drain tube (C1) directing used water through a filter (F1) to a reservoir (R1), and a suction tube (C2) directing water to a pump (C 1) having an electric motor valve pumping water from said reservoir (R1) through said suction tube (C2) and a pressure tube (C3) to said nozzle (S1), through which water rinses inclined photovoltaic surface (FP).
Description
PHOTOVOLTAIC SURFACES COOLING SYSTEM
The subject of the present invention is a photovoltaic surfaces cooling system by rinsing with or rather circulating of a cooling liquid within a closed system, wherein rainwater is used for cooling in the system with rinsing, said rainwater being collected in a reservoir and allowed to circulate within said system under control thus cooling a photovoltaic surface. The invention belongs to class H01 L 31/052 of the international patent classification.
A technical problem successfully solved by the present invention for the cooling of photovoltaic surfaces is keeping a lower operating temperature of active photovoltaic surfaces thus achieving a higher yield in hot summer sunny days. Moreover, the system of the invention provides for cleanness of photovoltaic surfaces, which additionally contributes to a higher yield.
The yield in photovoltaic surfaces intended for the conversion of sunlight into electricity depends on the captured sun radiation. Photovoltaic surfaces are therefore arranged in such direction and at such angle to capture optimum sun radiation regardless of the time of the year and the hour of the day. Photovoltaic surfaces not only convert useful sunlight into electricity but also get heated, which has a negative impact on their yield. In order to avoid the heating of photovoltaic surfaces, it is reasonable to cool them, i.e. to ensure conditions for the cooling thereof.
Known versions of photovoltaic systems without cooling reach temperatures beyond 80°C in sunny summer days at low altitudes, which decreases their yield by more than a half.
One of solutions to the cooling of photovoltaic elements is disclosed in the US patent US 2008110493. A photovoltaic frame assembly comprises air vents that allow the cool air to flow into the frame and thereby cool the photovoltaic module.
The EP patent No. 1 914 489 describes a photovoltaic module with a cooling system that increases the dimensions of the photovoltaic module, which makes this solution too expensive.
The invention will be described in more detail by way of an embodiment and the belonging drawings, showing in:
Figure 1 a schematic view of the photovoltaic surfaces cooling system of the invention by rinsing;
Figure 2 a schematic view of the photovoltaic surfaces cooling system by rinsing with a closed system and with an additional surface of the invention;
The photovoltaic surfaces cooling system of the invention by rinsing that is schematically shown in Figure 1 consists of an oblong nozzle S1 extending above the entire width of a photovoltaic surface FP, a drain Z1 extending at least under the entire width of said photovoltaic surface FP, a
drain tube C1 directing used water through a filter F1 to a reservoir R1 , a suction tube C2 directing water to a pump C1 having an electric motor valve pumping water from said reservoir R1 through said suction tube C2 and a pressure tube C3 to said nozzle S1, through which water rinses inclined photovoltaic surface FP. Said photovoltaic surface FP is provided with a temperature sensor T1 that controls by means of said pump C1 and a heat exchanger 11 within said reservoir R1 a control assembly E1 and a temperature sensor T2 within said reservoir R1.
The system for cooling photovoltaic surfaces of the invention by rinsing that has the components as stated above may be additionally arranged on already existing photovoltaic surfaces FP. As said temperature sensor T1 detects a too high temperature of said photovoltaic surface FP, it turns on said control assembly E1 , said pump C1 pumping water from said reservoir R1 through said suction tube C2 and pressure tube C3 into said nozzle Si , through which water is poured onto said photovoltaic surface FP, which thus gets cooled and cleaned. Should too high temperature of water in said reservoir R1 be detected by said sensor T2, said control assembly E1 switches on a heat exchanger that cools the water in said reservoir R1. The most suitable type of water to be used in the system of the invention is rainwater that gets collected upon each rainfall in said drain Z1 and then stored in said reservoir R1. Other type of water containing less limestone may be used as well. The system of the invention is useful
both for the cooling of photovoltaic surfaces and rinsing same thus achieving a better yield.
In cases of a lack of rainwater in certain regions, a cooling liquid is conducted through a closed system as follows: a photovoltaic surface FP1 is sealed in a way that a cooling liquid may run between said surface and a transparent surface P or between a back wall S and said transparent surface P. Said photovoltaic surface FP' may also be adequately insulated by an insulation coat I. Said transparent surface P may be of glass and arranged in front of the front active side of said photovoltaic surface PF'. If said transparent surface P made of insulation glass is positioned in front of said photovoltaic surface PF', the heat from said photovoltaic surface PF' may be used for indirect heating in winter time.
The system for the cooling of photovoltaic surfaces of the invention by rinsing is thus an easy way of cooling and rinsing photovoltaic surfaces PF, which thus operate with a higher yield, since running water partially takes heat with it into said reservoir R1 and part of it gets evaporated. In a closed system water conducts heat away from said photovoltaic surface PF' and the heat may be used for the heating of sanitary water or for other heating purposes.
Claims
1. Photovoltaic surfaces cooling system by rinsing, characterised in that a nozzle (S1) is arranged above a photovoltaic surface (FP) and a drain (Z1) is arranged below said photovoltaic surface (FP), wherein said nozzle (S1) is linked via pressure tube (C3), pump (C1) having an electric motor valve and suction tube (C2) to a reservoir (R1) and said drain (Z1) is linked to said reservoir (R1) via drain tube (C1) and filter (F1).
2. Photovoltaic surfaces cooling system by rinsing as claimed in Claim 1 , characterised in that a heat exchanger (11) is arranged within said reservoir (R1), a sensor (T1) is arranged on said photovoltaic surface (FP), and a sensor (T2) is arranged within said reservoir (R1), both sensors being connected to a control assembly (E1) controlling a pump (01) with a control valve.
3. Photovoltaic surfaces cooling system within a closed system, characterised in a photovoltaic surface (FP1), wherein a cooling liquid runs between said surface and a transparent surface (P) or between a back wall (S) and said transparent surface (P), and said photovoltaic surface (FP') being adequately insulated by an insulation coat (I).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SIP-200800176 | 2008-07-11 | ||
| SI200800176A SI22844A (en) | 2008-07-11 | 2008-07-11 | System for cooling photovoltaic surfaces by water trickling |
| SI200900190A SI23113A (en) | 2009-07-10 | 2009-07-10 | System for cooling photovoltaic surfaces |
| SIP-200900190 | 2009-07-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2010005402A2 true WO2010005402A2 (en) | 2010-01-14 |
| WO2010005402A3 WO2010005402A3 (en) | 2010-04-01 |
Family
ID=41384668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SI2009/000028 WO2010005402A2 (en) | 2008-07-11 | 2009-07-10 | Photovoltaic surfaces cooling system |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2010005402A2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2961024A1 (en) * | 2010-06-02 | 2011-12-09 | Sunbooster | Cooling device for cooling photovoltaic panel on e.g. roof of dwelling, has sprinkling unit arranged at proximity of upper edge to assure flow by gravity in form of liquid film on upper surface of photovoltaic panel |
| ITTV20100112A1 (en) * | 2010-08-04 | 2012-02-05 | Electronic Fashion Di Favaro Michele | RAIN-WATER PHOTOVOLTAIC PANEL COOLING SYSTEM. |
| ITTO20110344A1 (en) * | 2011-04-19 | 2012-10-20 | Emanuele Giannetti | COOLING SYSTEM FOR PHOTOVOLTAIC PANELS |
| EP2515348A1 (en) * | 2011-04-21 | 2012-10-24 | Helios Tech., a.s. | Mechanical device for increasing the power of photovoltaic panels |
| FR2974670A1 (en) * | 2011-04-26 | 2012-11-02 | Sycomoreen | Device for optimization of photovoltaic panels installed on roof of building, has return filters fixed with containers, triggering filters fixed with pumps, and thermostatic relay for measuring temperature of photovoltaic panels |
| DE102011108087A1 (en) * | 2011-07-18 | 2013-01-24 | Peter Schütz | Front-side device for cooling and cleaning of solar modules, has water gush-generator to automatically generate gush of water at adjustable water level in tilting container to flow on underlying solar modules |
| FR3005813A1 (en) * | 2013-05-15 | 2014-11-21 | Pascal Nuti | HYBRID SOLAR PANEL |
| US10050584B2 (en) | 2016-03-16 | 2018-08-14 | Hardware Labs Performance Systems, Inc. | Cooling apparatus for solar panels |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803737B (en) * | 2017-04-07 | 2018-06-05 | 刘天行 | A kind of self-cleaning cooling type photovoltaic power generation apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6213084A (en) * | 1985-07-10 | 1987-01-21 | Mitsubishi Electric Corp | Solar battery |
| JPH10169134A (en) * | 1996-12-13 | 1998-06-23 | Seinan Sogo Kaihatsu Kk | Solar energy converting device and roof with solar energy converting device |
| US20020121298A1 (en) * | 2001-01-15 | 2002-09-05 | Konold Annemarie Hvistendahl | Combined solar electric power and liquid heat transfer collector panel |
| JP2003199377A (en) * | 2001-12-27 | 2003-07-11 | Panahome Corp | Solarlight power generator |
| JP2006183933A (en) * | 2004-12-27 | 2006-07-13 | Sanyo Electric Co Ltd | Photovoltaic system |
-
2009
- 2009-07-10 WO PCT/SI2009/000028 patent/WO2010005402A2/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6213084A (en) * | 1985-07-10 | 1987-01-21 | Mitsubishi Electric Corp | Solar battery |
| JPH10169134A (en) * | 1996-12-13 | 1998-06-23 | Seinan Sogo Kaihatsu Kk | Solar energy converting device and roof with solar energy converting device |
| US20020121298A1 (en) * | 2001-01-15 | 2002-09-05 | Konold Annemarie Hvistendahl | Combined solar electric power and liquid heat transfer collector panel |
| JP2003199377A (en) * | 2001-12-27 | 2003-07-11 | Panahome Corp | Solarlight power generator |
| JP2006183933A (en) * | 2004-12-27 | 2006-07-13 | Sanyo Electric Co Ltd | Photovoltaic system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2961024A1 (en) * | 2010-06-02 | 2011-12-09 | Sunbooster | Cooling device for cooling photovoltaic panel on e.g. roof of dwelling, has sprinkling unit arranged at proximity of upper edge to assure flow by gravity in form of liquid film on upper surface of photovoltaic panel |
| ITTV20100112A1 (en) * | 2010-08-04 | 2012-02-05 | Electronic Fashion Di Favaro Michele | RAIN-WATER PHOTOVOLTAIC PANEL COOLING SYSTEM. |
| ITTO20110344A1 (en) * | 2011-04-19 | 2012-10-20 | Emanuele Giannetti | COOLING SYSTEM FOR PHOTOVOLTAIC PANELS |
| EP2515348A1 (en) * | 2011-04-21 | 2012-10-24 | Helios Tech., a.s. | Mechanical device for increasing the power of photovoltaic panels |
| FR2974670A1 (en) * | 2011-04-26 | 2012-11-02 | Sycomoreen | Device for optimization of photovoltaic panels installed on roof of building, has return filters fixed with containers, triggering filters fixed with pumps, and thermostatic relay for measuring temperature of photovoltaic panels |
| DE102011108087A1 (en) * | 2011-07-18 | 2013-01-24 | Peter Schütz | Front-side device for cooling and cleaning of solar modules, has water gush-generator to automatically generate gush of water at adjustable water level in tilting container to flow on underlying solar modules |
| FR3005813A1 (en) * | 2013-05-15 | 2014-11-21 | Pascal Nuti | HYBRID SOLAR PANEL |
| US10050584B2 (en) | 2016-03-16 | 2018-08-14 | Hardware Labs Performance Systems, Inc. | Cooling apparatus for solar panels |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010005402A3 (en) | 2010-04-01 |
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