CN102290476A - Photovoltaic photo-thermal energy storage device - Google Patents
Photovoltaic photo-thermal energy storage device Download PDFInfo
- Publication number
- CN102290476A CN102290476A CN201110175050A CN201110175050A CN102290476A CN 102290476 A CN102290476 A CN 102290476A CN 201110175050 A CN201110175050 A CN 201110175050A CN 201110175050 A CN201110175050 A CN 201110175050A CN 102290476 A CN102290476 A CN 102290476A
- Authority
- CN
- China
- Prior art keywords
- photovoltaic
- conductive plate
- energy storage
- phase change
- change heat
- 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.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 18
- 230000008859 change Effects 0.000 claims abstract description 29
- 238000005338 heat storage Methods 0.000 claims abstract description 25
- 239000011232 storage material Substances 0.000 claims abstract description 25
- 238000009413 insulation Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 16
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 24
- 230000005855 radiation Effects 0.000 description 8
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 4
- RZJRJXONCZWCBN-UHFFFAOYSA-N octadecane Chemical compound CCCCCCCCCCCCCCCCCC RZJRJXONCZWCBN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000374 eutectic mixture Substances 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229940038384 octadecane Drugs 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02E10/60—Thermal-PV hybrids
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a photovoltaic photo-thermal energy storage device, which comprises a photovoltaic cell, an upper conduction plate, a lower conduction plate, a phase change heat storage material and a channel pipe, wherein the upper conduction plate is arranged on the back of the photovoltaic cell; the lower conduction plate is arranged below the upper conduction plate; the channel pipe is arranged between the upper conduction plate and the lower conduction plate; a cyclic medium is arranged in the channel pipe; and the phase change heat storage material is arranged out of the channel pipe and is filled between the upper conduction plate and the lower conduction plate. According to the photovoltaic photo-thermal energy storage device, the total use ratio of the solar energy is above 70%, the photovoltaic conversion efficiency is improved by above 15%, and the energy efficiency ratio of a heat pump system is above 3.0; solar energy photovoltaic utilization, photo-thermal utilization and the heat pump system are integral, the integral structure is compact, and a unit is minimized; and electric energy output provided by the photovoltaic cell can satisfy the requirements for the heat pump system to operate.
Description
Technical field
What the present invention relates to is a kind of energy storage equipment, in particular a kind of photovoltaic and photothermal energy storage equipment.
Background technology
In the practical application of photovoltaic cell, the solar energy that shines the photovoltaic cell surface has and is not converted into electric energy more than 80%, but be converted into heat energy, photovoltaic battery temperature is raise, when particularly solar irradiation is strong, can cause power conversion efficiency (pce) sharply to descend, the conversion efficiency of photovoltaic cell has only 8%～12% usually.
The heat energy that the solar energy that shines the photovoltaic cell surface is produced is not saved at present, has caused the loss of energy on the one hand, makes that on the other hand the conversion efficiency of photovoltaic cell is on the low side yet.How normally provide under the prerequisite of electric energy satisfying solar cell, the photo-thermal that solar energy produces is stored preferably, become the difficult point of present photovoltaic cell in using.
Summary of the invention
Goal of the invention: the invention provides a kind of photovoltaic and photothermal energy storage equipment, in the space that forms between the conductive plate up and down at the back side of photovoltaic cell, fill phase change heat storage material and be used to store heat energy, the temperature stabilization of photovoltaic cell makes the heat energy of solar energy obtain storage and utilization about 25 ℃.
Technical scheme: energy storage equipment of the present invention comprises photovoltaic cell, last conductive plate, following conductive plate, phase change heat storage material and tube channel; Wherein: go up the back side that conductive plate is arranged at photovoltaic cell, following conductive plate is positioned under the conductive plate, tube channel is arranged between conductive plate and the following conductive plate, be provided with circulatory mediator in the tube channel, phase change heat storage material is arranged at outside the tube channel, and phase change heat storage material is filled between conductive plate and the following conductive plate.
For insulation, the back side of described photovoltaic cell is provided with thermal insulation layer, and described thermal insulation layer is coated on outside conductive plate, following conductive plate, phase change heat storage material and the tube channel.
In order to realize conducting effect preferably, the described conductive plate of going up is an aluminium sheet with following conductive plate.
Described circulatory mediator water or cooling agent, phase change heat storage material and circulatory mediator generation heat exchange.，
For the heat conducting effect of reinforced transformation heat-storing material, the outer surface of described tube channel is provided with fin, and fin is used for heat radiation.
In order to realize better heat insulating effect, described thermal insulation layer is that the polyurethane expanded material is made.
Described phase change heat storage material is that phase transition temperature is 24～26 ℃ a composite phase change heat-accumulation material, and phase change heat storage material can better be stored heat energy and make being stabilized in about 25 ℃ of photovoltaic cell.
Operation principle of the present invention is: in the solar radiation that photovoltaic and photothermal energy storage equipment of the present invention receives, shortwave radiation forms electric energy output by the photovoltaic conversion, and long-wave radiation is by the thermal source of photo-thermal conversion as heat pump.Because the evaporation heat-absorbing action of circulatory mediator in the heat pump, photovoltaic cell is operated in lower temperature range, thereby is effectively cooled off, and the photovoltaic conversion efficiency is improved; In addition, solar radiation has improved the evaporating temperature and the evaporating pressure of heat pump by the thermal source of photo-thermal conversion as heat pump, makes the Energy Efficiency Ratio of heat pump be improved.Select phase transition temperature at 24～26 ℃ phase change heat storage material, the temperature all-the-time stable that so both can guarantee photovoltaic battery panel makes the conversion efficiency of photovoltaic cell reach optimum value 25 ℃ of standard conditions; The working temperature of system is stable in the time of can making the photo-thermal conversion again, and the performance of whole system improves.
Beneficial effect: the present invention has the following advantages compared to existing technology:
(1) use the present invention that the total utilization ratio of solar energy is reached more than 70%, the photovoltaic conversion efficiency improves more than 15%, and the Energy Efficiency Ratio of heat pump reaches more than 3.0;
(2) solar energy photovoltaic utilization, solar thermal utilization and heat pump is integrated, compact overall structure, unit miniaturization;
(3) the electric energy output that provides of photovoltaic cell, but required during the operation of heat pump system;
(4) this device both can and provide hot water to indoor cooling when working summer, can reduce the working temperature of photovoltaic cell again, and the photovoltaic conversion efficiency is improved; When working, spring and autumn both can improve the photovoltaic conversion efficiency of photovoltaic cell again to the indoor hot water that provides; Can be when working in the winter time to indoor heating and heat supply water.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises photovoltaic cell 1, last conductive plate 2, following conductive plate 3, phase change heat storage material 4, tube channel 5 and thermal insulation layer 6; Last conductive plate 2 is arranged at the back side of photovoltaic cell 1, and following conductive plate 3 is positioned under the conductive plate 2, is provided with tube channel 5 in the space that following conductive plate 3 and last conductive plate 2 constitute; Tube channel 5 is the pipe of aluminum, also can select square tube made of copper for use among other embodiment; Phase change heat storage material 4 is arranged at outside the tube channel 5, and phase change heat storage material 4 is filled in the space that constitutes between conductive plate 2 and the following conductive plate 3; Thermal insulation layer 6 is coated on outside conductive plate 2, following conductive plate 3, phase change heat storage material 4 and the tube channel 5; The outer surface of tube channel 5 is provided with circular fin and is used for heat radiation, is provided with water as circulatory mediator in the tube channel 5, and other embodiment can select for use cooling agent as circulatory mediator, and tube channel 5 is communicated with the external heat pumping system.Going up conductive plate 2 in the present embodiment is aluminium sheets with following conductive plate 3, and thermal insulation layer 6 is that the polyurethane expanded material is made.
The phase transition temperature of phase change heat storage material 4 is 24～26 ℃ in the present embodiment, the phase change heat storage material 4 that present embodiment is selected for use is composite phase change heat-accumulation material, this material comprises hexadecane, octadecane and foamed aluminium, preparation process is as follows: earlier with hexadecane and octadecane by mass ratio 3～7: 7～3 are heated to fully after mixing and melt, stir then, form eutectic mixture, again with eutectic mixture and foamed aluminium by mass ratio 5～10: 1 mixes stirring afterwards, forms described composite phase change heat-accumulation material.
During the work of this device, the shortwave radiation that the front of photovoltaic cell 1 receives forms electric energy output by the photovoltaic conversion, stores and convert to alternating current by DC-AC inverter (not drawing among the figure), supplies with heat pump and uses.Long-wave radiation forms heat energy by the photo-thermal conversion and exports from the back side of photovoltaic cell 1 by phase change heat storage material 4 absorption storages, circulatory mediator in the tube channel 5 absorbs the heat energy that phase change heat storage material 4 stores, the working temperature of photovoltaic cell 1 is reduced, improved the conversion efficiency of photovoltaic cell 1.Circulatory mediator after the heat absorption is sent into heat(ing) coil in the water heater by compressor or circulating pump, make the water heat temperature raising in the water heater, providing life use hot water, the circulatory mediator that flows out after the heat release of water heater coil pipe flow channel pipe 5 again absorbs the heat energy of phase change heat storage materials 4 storages.
Claims (8)
1. a photovoltaic and photothermal energy storage equipment is characterized in that, this energy storage equipment comprises photovoltaic cell (1), last conductive plate (2), following conductive plate (3), phase change heat storage material (4) and tube channel (5); Wherein: go up the back side that conductive plate (2) is arranged at photovoltaic cell (1), following conductive plate (3) is positioned under the conductive plate (2), tube channel (5) is arranged between conductive plate (2) and the following conductive plate (3), tube channel is provided with circulatory mediator in (5), phase change heat storage material (4) is arranged at outside the tube channel (5), and phase change heat storage material (4) is filled between conductive plate (2) and the following conductive plate (3).
2. photovoltaic and photothermal energy storage equipment according to claim 1, it is characterized in that: the back side of described photovoltaic cell (1) is provided with thermal insulation layer (6), and described thermal insulation layer (6) is coated on outside conductive plate (2), following conductive plate (3), phase change heat storage material (4) and the tube channel (5).
3. photovoltaic and photothermal energy storage equipment according to claim 1 is characterized in that: described upward conductive plate (2) and following conductive plate (3) are aluminium sheets.
4. photovoltaic and photothermal energy storage equipment according to claim 1 is characterized in that: described circulatory mediator is water or cooling agent.
5. photovoltaic and photothermal energy storage equipment according to claim 1 is characterized in that: the outer surface of described tube channel (5) is provided with fin.
6. photovoltaic and photothermal energy storage equipment according to claim 1 is characterized in that: described tube channel (5) is pipe or the square tube that copper or aluminium are made.
7. photovoltaic and photothermal energy storage equipment according to claim 1 is characterized in that: described thermal insulation layer (6) is that the polyurethane expanded material is made.
8. photovoltaic and photothermal energy storage equipment according to claim 1 is characterized in that: described phase change heat storage material (4) is that phase transition temperature is 24～26 ℃ a composite phase change heat-accumulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110175050A CN102290476A (en) | 2011-06-27 | 2011-06-27 | Photovoltaic photo-thermal energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110175050A CN102290476A (en) | 2011-06-27 | 2011-06-27 | Photovoltaic photo-thermal energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102290476A true CN102290476A (en) | 2011-12-21 |
Family
ID=45336717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110175050A Pending CN102290476A (en) | 2011-06-27 | 2011-06-27 | Photovoltaic photo-thermal energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102290476A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353181A (en) * | 2013-07-29 | 2013-10-16 | 东南大学 | Phase-changing heat storage type photovoltaic and optothermal heat collector and preparation method thereof |
| CN103669645A (en) * | 2013-12-24 | 2014-03-26 | 深圳大学 | Photovoltaic phase change wall system and implementation method thereof |
| CN104092439A (en) * | 2014-06-24 | 2014-10-08 | 无锡马丁格林光伏科技有限公司 | Quickly improved photovoltaic photo-thermal integral distributed system |
| CN104242816A (en) * | 2014-09-13 | 2014-12-24 | 钟小强 | Cold accumulation type photovoltaic power generation device |
| CN106486563A (en) * | 2016-12-02 | 2017-03-08 | 西南交通大学 | A kind of photovoltaic photo-thermal heat collector based on phase change thermal management |
| WO2020168722A1 (en) * | 2019-02-21 | 2020-08-27 | 中国矿业大学 | Granular mineral dry sorting system based on solar energy and heat storage |
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| CN1563252A (en) * | 2004-03-23 | 2005-01-12 | 南京大学 | Phase change cold accumulation material in use for air conditioning, and preparation method |
| CN1731034A (en) * | 2005-08-23 | 2006-02-08 | 南京大学 | Phase-change cold-storage device for air conditioner |
| CN1821340A (en) * | 2006-03-23 | 2006-08-23 | 南京大学 | Solar water heater phase change heat storage material and its preparing method |
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| CN101004332A (en) * | 2007-01-25 | 2007-07-25 | 南京大学 | Heat pipe accumulator |
| CN101578029A (en) * | 2009-06-19 | 2009-11-11 | 北京航空航天大学 | Phase-change temperature control device integrating heat pipe and foam metal core body |
| CN101827509A (en) * | 2009-03-03 | 2010-09-08 | 赵继永 | Phase-change energy accumulation and temperature control device of sealing equipment |
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2011
- 2011-06-27 CN CN201110175050A patent/CN102290476A/en active Pending
Patent Citations (10)
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| CN1482204A (en) * | 2002-09-11 | 2004-03-17 | 云南玮昊能源发展有限公司 | Energy-accumulating temp-controlled thermoplastic cross-link high-molecular composite material with solid-solid phase change and its preparing process |
| CN1462787A (en) * | 2003-06-18 | 2003-12-24 | 清华大学 | Material for storing heat and supplying heat for building generated shaped phase change by heating and its preparation method |
| CN1563252A (en) * | 2004-03-23 | 2005-01-12 | 南京大学 | Phase change cold accumulation material in use for air conditioning, and preparation method |
| CN1917193A (en) * | 2005-08-19 | 2007-02-21 | 鸿富锦精密工业（深圳）有限公司 | Heat sink |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353181A (en) * | 2013-07-29 | 2013-10-16 | 东南大学 | Phase-changing heat storage type photovoltaic and optothermal heat collector and preparation method thereof |
| CN103353181B (en) * | 2013-07-29 | 2016-05-04 | 东南大学 | A kind of phase-change heat-storage photovoltaic and photothermal heat collector and preparation method thereof |
| CN103669645A (en) * | 2013-12-24 | 2014-03-26 | 深圳大学 | Photovoltaic phase change wall system and implementation method thereof |
| CN103669645B (en) * | 2013-12-24 | 2014-08-13 | 深圳大学 | Photovoltaic phase change wall system and implementation method thereof |
| CN104092439A (en) * | 2014-06-24 | 2014-10-08 | 无锡马丁格林光伏科技有限公司 | Quickly improved photovoltaic photo-thermal integral distributed system |
| CN104242816A (en) * | 2014-09-13 | 2014-12-24 | 钟小强 | Cold accumulation type photovoltaic power generation device |
| CN106486563A (en) * | 2016-12-02 | 2017-03-08 | 西南交通大学 | A kind of photovoltaic photo-thermal heat collector based on phase change thermal management |
| WO2020168722A1 (en) * | 2019-02-21 | 2020-08-27 | 中国矿业大学 | Granular mineral dry sorting system based on solar energy and heat storage |
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Application publication date: 20111221 |