CN203911839U - Thermophotovoltaic and thermoelectric co-generation device for secondary power generation - Google Patents
Thermophotovoltaic and thermoelectric co-generation device for secondary power generation Download PDFInfo
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- CN203911839U CN203911839U CN201420226785.XU CN201420226785U CN203911839U CN 203911839 U CN203911839 U CN 203911839U CN 201420226785 U CN201420226785 U CN 201420226785U CN 203911839 U CN203911839 U CN 203911839U
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- photovoltaic cell
- compressor
- temperature
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- 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
Abstract
The utility model discloses a thermophotovoltaic and thermoelectric co-generation device for secondary power generation. The device comprises a combustor, a selective filter, a photovoltaic cell, a cell cooling channel, a waste-heat recovery heat exchanger, a compressor, a gas turbine and a generator set. The cell cooling channel is arranged on the back of the photovoltaic cell, and is used for lowering the temperature during a power generation process of the photovoltaic cell trough the flowing of cooling water, and warm water is generated for household use. The waste-heat recovery heat exchanger and the compressor are disposed at a smoke discharge port of the combustor. The refrigerant of the heat exchanger is also cooling water. High-temperature hot water is generated by heat exchange, and the temperature of high-temperature smoke is reduced to the maximum, so that the requirements on working temperature of the compressor are satisfied. High-pressure smoke generated by the compressor enters the gas turbine to explode and work, thereby enabling the secondary power generation of the generator. According to the utility model, heat released by combustion of fuel is utilized to the maximum, so that the energy conversion efficiency of the device is further increased.
Description
Technical field
The invention belongs to Thermophotovoltaic field, be specifically related to a kind of novel cogeneration of heat and power technology of utilizing thermo-optical volt principle, refer in particular to a kind of thermo-optical latent heat thermoelectric coproduction device that can secondary electricity generation.
Background technology
In recent years, the exploitation of thermo-optical volt (TPV) system has been become to a worldwide study hotspot.Traditional hot photovoltaic system comprises following components: thermal source, heat radiator, photon filter, photocell, it utilizes certain energy to add thermal radiator to make it reach higher temperature, the photon collision photocell surface that hyperthermia radiation device discharges, is converted into electric energy by inner semiconductor p-n junction.Enrich in the required thermal source source of TPV system, wherein burning generation chemical energy is the most common heat resource form, be subject to photovoltaic cell photoelectric conversion efficiency, the restriction of filter filter effect and the energy dissipation of high-temp waste gas, the whole efficiency of this kind of TPV system is generally not high, and the whole conversion efficiency of device obtaining under experiment condition is all below 10%.
Core component for hot photovoltaic system---photovoltaic cell, much can not carry out the radiant energy of opto-electronic conversion owing to having absorbed, and its surface temperature can constantly raise, and causes operating efficiency to decline.Showing according to the study, is that 1227 ℃, photocell temperature are in 25 ℃ of situations in source temperature, and GaSb photocell conversion efficiency is 25%, and when battery temperature is 130 ℃, photronic conversion efficiency is reduced to 17%.Therefore,, for making photovoltaic cell keep optimum Working, the cooling effect of photovoltaic cell must be protected.In addition, combustion process will inevitably produce certain discarded object, and these high-temperature products are all directly to discharge conventionally, and this not only wastes energy, and also environment is worked the mischief.
About reducing the structural design of photovoltaic battery temperature, technical scheme existing relevant in prior art is open, as China Patent No.: 201210543617.9, denomination of invention is: a kind of low profile thermal photovoltaic co-generation unit with waste heat recovery, this system comprises thermal source, heat radiator, photon filter, hot photovoltaic cell, at the back side of hot photovoltaic battery panel, is provided with photocell cooling device; Fume emission outlet at heat radiator arranges a flue gas waste heat for heat exchange equipment, and described cooling device consists of water pump and cooling water pipe, and described flue gas waste heat for heat exchange equipment comprises flue and aquaporin, and described aquaporin is the extension of cooling water pipe.Although this application case has realized the cooling of photovoltaic cell, by flue gas waste heat for heat exchange equipment, the waste heat recovery of high-temperature flue gas is become to hot water, but this application case does not utilize high-temperature flue gas to produce electric energy, realizes the utilization more fully of high-temperature flue gas, improves the conversion efficiency of TPV system.
Based on above analysis, for further improving the conversion efficiency of TPV system, how rationally to utilize the waste heat used heat of power generation process links, realize cogeneration of heat and power and just seem and be necessary very much.
Summary of the invention
1, the technical problem that invention will solve
The object of the invention is according to the work characteristics of thermo-optical electric system, a kind of thermo-optical latent heat thermoelectric coproduction device of secondary electricity generation is provided, thereby realize system capacity conversion efficiency, improve largely.
2, technical scheme
For achieving the above object, the present invention adopts following technical scheme:
A thermo-optical latent heat thermoelectric coproduction device for secondary electricity generation, comprises burner, selective filter, photovoltaic cell, battery cooling duct, waste heat recovery heat exchanger, compressor, gas turbine and generating set;
Described burner and the parallel placement of photovoltaic cell centering, described selective filter is located at the face of accepting of photovoltaic cell, battery cooling duct is arranged on the back side of photovoltaic battery panel, the smoke evacuation outlet of burner is provided with waste heat recovery heat exchanger and compressor, one end of described gas turbine is connected with compressor, and its other end is connected with generating set; Described waste heat recovery heat exchanger is fin-tube type structure, and water flows in smooth pipe, on the fin of flue gas outside pipe, flows.
Further, described burner is parallel-plate structure, its inner filling porous medium, and its material is Al
2o
3.
Further, described photovoltaic cell selects the GaSb battery of energy gap 0.72ev, cut-off wavelength 1.78 μ m.
Further, the cooling duct of described photovoltaic cell is parallel-plate structure, and channel interior arranges flow-disturbing fin.
Further, described selective filter is One Dimension Periodic Si/SiO
2photon crystal film type filter, and adopt the mode of vacuum sputtering to be directly plated in the acceptance surface of battery.
Thermo-optical latent heat thermoelectric coproduction device utilizes Thermophotovoltaic and gas turbine power generation technology simultaneously, produces electric energy.
Thermo-optical latent heat thermoelectric coproduction device, when completing secondary electricity generation work, produces the hot water of different temperatures, has realized waste heat and used heat utilization.
Fuel and oxidant burn after entering after sufficiently mixing burner, burner outer surface is radiating surface, the radiant energy discharging during the condition of high temperature is after selective filter, a part effectively radiant energy is passed filter, be irradiated to photovoltaic cell surface, by photovoltaic cell, convert electric energy to, another part can be back to radiator to carry out heat recovery by filter.The operating efficiency decline bringing for avoiding battery Yin Wendu to raise, adopt the mode of cold water cooling to work under constant low temperature to maintain it, and cooling water becomes low-temperature water heating after the heat that absorbs battery, can directly supply with family and use.On the other hand, in burner smoke evacuation outlet, a waste heat recovery heat exchanger and compressor have been installed, the refrigerant of waste heat recovery heat exchanger is also cooling water, by exchange heat when producing a large amount of high-temperature-hot-waters, reduced to greatest extent the temperature of high-temperature flue gas, made it meet the operating temperature range of compressor.After compressor, flue gas reaches certain pressure, becomes gases at high pressure, finally enters gas turbine expansion acting, impels generator generating, thereby realize mechanical energy, converts electric energy to, reaches the effect of secondary electrogenesis.
3, beneficial effect
Adopt technical scheme provided by the invention, compare with existing known technology, there is following remarkable result:
(1) the present invention has maximally utilised and has projected photronic part energy, by originally have the energy of negative effect to change into heat energy to photocell efficiency, and reduced photronic working temperature simultaneously, has improved photronic efficiency.
(2) the present invention has realized the comprehensive utilization of high-temperature flue gas energy effectively, when realizing secondary electrogenesis, can also produce a large amount of hot water, and the energy conversion efficiency of system can further be promoted.
Accompanying drawing explanation
Fig. 1 is the cogeneration system figure of the secondary electricity generation after improving;
In figure: 1. fuel and oxidant mixture; 2. burner; 3. integrated radiant emittance; 4. reflected radiation energy; 5. selective filter; 6. transmitted radiation energy; 7. photovoltaic cell; 8. battery cooling water; 9. battery cooling duct; 10. low-temperature water heating; 11. high-temperature flue gas; 12. waste heat recovery heat exchangers; 13. flue gas cooling waters; 14. high-temperature-hot-waters; 15. low-temperature flue gas; 16. compressors; 17. high pressure flue gases; 18. gas turbines; 19. exhaust steam; 20. generating sets.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
Embodiment 1
As shown in Figure 1, a kind of thermo-optical latent heat thermoelectric coproduction device of secondary electricity generation, comprises burner 2, selective filter 5, photovoltaic cell 7, battery cooling duct 9, waste heat recovery heat exchanger 12, compressor 16, gas turbine 18 and generating set 20;
Described burner 2 and the parallel placement of photovoltaic cell 7 centering, described selective filter 5 is located at the face of accepting of photovoltaic cell 7, described battery cooling duct 9 be located at photovoltaic cell 7 the back side, the smoke evacuation outlet of burner 2 is provided with waste heat recovery heat exchanger 12 and compressor 16, one end of described gas turbine 18 is connected with compressor 16, and its other end is connected with generating set 20, and described waste heat recovery heat exchanger 12 is fin-tube type structure, water flows in smooth pipe, on the fin of flue gas outside pipe, flows.
Under normal temperature, fuel and oxidant mixture 1 enter burner 2 with the flow velocity of 0.5～3m/s and burn, and burner outer surface is heated to more than 1000 ℃, burner 2 adopts resistant to elevated temperatures 316 stainless steels to make, after high-temperature oxydation, the emissivity of outer surface can reach 0.85, burner 2 is parallel-plate structure, and inside is filled with porous media to improve intensity and the effect of combustion process, and its material is Al
2o
3.Burner 2 is selected the GaSb battery of energy gap 0.72ev, cut-off wavelength 1.78 μ m with the parallel placement of photovoltaic cell 6 centering, photovoltaic cell 7, and 5 of selective filters adopt the comparatively simple One Dimension Periodic Si/SiO of structure
2photon crystal film type filter, and can adopt the mode of vacuum sputtering to be directly plated in the acceptance surface of battery.Battery cooling duct is parallel-plate structure, for improving heat transfer effect, can flow-disturbing fin be set in channel interior, and battery cooling water 8 becomes low-temperature water heating 10 after heat exchange, and water temperature can reach 30～40 ℃, for the normal use of family.
From burner 2 high-temperature flue gas 11 out, temperature is generally 1000 ℃ of left and right, pressure is about 0.12MPa, through waste heat recovery heat exchanger 12, (recovery waste heat can reach 450～750 ℃, the optimum device that reclaims at present high-temperature flue gas waste heat), by carrying out after heat exchange with flue gas cooling water 13, become low-temperature flue gas 15 (400 ℃ of left and right of temperature, pressure 0.1MPa), thus reach the operating temperature range (normal temperature to 500 ℃ left and right) of compressor 16.The compression ratio of compressor 16 elects 14 as, and flue gas forms high pressure flue gas 17 after compression, and pressure requires to be not less than 0.3MPa, and temperature is not less than 450 ℃.High pressure flue gas 17 finally enters gas turbine expansion acting, impels generator generating, thereby realize mechanical energy, converts electric energy to, reaches the effect of secondary electrogenesis.Gas turbine 18 heat efficiencys can reach 30%～34%, and gas turbine 18 and generator 20 be independent forms that installation is fast, the start-stop circulatory system flexibly, and the exhaust steam 19 also condensable hot water that is recovered as is used.
Claims (6)
1. a thermo-optical latent heat thermoelectric coproduction device for secondary electricity generation, is characterized in that: comprise burner, selective filter, photovoltaic cell, battery cooling duct, waste heat recovery heat exchanger, compressor, gas turbine and generating set;
Described burner and the parallel placement of photovoltaic cell centering, described selective filter is located at the face of accepting of photovoltaic cell, battery cooling duct is arranged on the back side of photovoltaic battery panel, the smoke evacuation outlet of burner is provided with waste heat recovery heat exchanger and compressor, one end of described gas turbine is connected with compressor, and its other end is connected with generating set.
2. the thermo-optical latent heat thermoelectric coproduction device of a kind of secondary electricity generation as claimed in claim 1, is characterized in that: described burner is parallel-plate structure, its inner filling porous medium, and its material is Al
2o
3.
3. the thermo-optical latent heat thermoelectric coproduction device of a kind of secondary electricity generation as claimed in claim 1, is characterized in that: described photovoltaic cell is the GaSb battery of energy gap 0.72ev, cut-off wavelength 1.78 μ m.
4. the thermo-optical latent heat thermoelectric coproduction device of a kind of secondary electricity generation as claimed in claim 1, is characterized in that: described photovoltaic cell cooling duct is parallel-plate structure, and channel interior arranges flow-disturbing fin.
5. the thermo-optical latent heat thermoelectric coproduction device of a kind of secondary electricity generation as claimed in claim 1, is characterized in that: described selective filter is One Dimension Periodic Si/SiO
2photon crystal film type filter, and adopt the mode of vacuum sputtering to be directly plated in the acceptance surface of battery.
6. the thermo-optical latent heat thermoelectric coproduction device of a kind of secondary electricity generation as claimed in claim 1, is characterized in that: described waste heat recovery heat exchanger is fin-tube type structure, and water flows in smooth pipe, on the fin of flue gas outside pipe, flows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226785.XU CN203911839U (en) | 2014-05-05 | 2014-05-05 | Thermophotovoltaic and thermoelectric co-generation device for secondary power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226785.XU CN203911839U (en) | 2014-05-05 | 2014-05-05 | Thermophotovoltaic and thermoelectric co-generation device for secondary power generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203911839U true CN203911839U (en) | 2014-10-29 |
Family
ID=51786081
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420226785.XU Expired - Fee Related CN203911839U (en) | 2014-05-05 | 2014-05-05 | Thermophotovoltaic and thermoelectric co-generation device for secondary power generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203911839U (en) |
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2014
- 2014-05-05 CN CN201420226785.XU patent/CN203911839U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20150505 |
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| EXPY | Termination of patent right or utility model |