CN102287344A - Novel geothermal and optothermal cogeneration system - Google Patents
Novel geothermal and optothermal cogeneration system Download PDFInfo
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- CN102287344A CN102287344A CN2011101794480A CN201110179448A CN102287344A CN 102287344 A CN102287344 A CN 102287344A CN 2011101794480 A CN2011101794480 A CN 2011101794480A CN 201110179448 A CN201110179448 A CN 201110179448A CN 102287344 A CN102287344 A CN 102287344A
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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
- Y02E10/10—Geothermal energy
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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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The invention relates to a novel geothermal and optothermal cogeneration system, which is characterized by comprising a geothermal evaporator, a solar overheater, a prime motor, a prime motor exhaust port, a working medium compression device, an air-cooling radiator, a liquid storage tank and a working medium booster pump. The solar overheater, the prime motor, the prime motor exhaust port, the working medium compression device, the air-cooling radiator, the liquid storage tank and the working medium booster pump are sequentially communicated with the geothermal evaporator; and the prime motor is respectively communicated with the working medium compression device and the air-cooling radiator through a three-way reversing valve. The invention has the advantages that a substance with a low boiling point is used as a working medium for power and refrigeration circulation, the medium-temperature and low-temperature geothermal heat can be used as a heat source for evaporation of the working medium, solar energy is adopted as an overheating source for the working medium, and the geothermal evaporator is arranged in a downhole. The circulating working medium is delivered into the evaporator at the bottom of a geothermal well for evaporation to absorb heat of geothermal fluid, geothermal hot water needs not to be pumped to the surface, the evaporation temperature of the working medium can be increased, well backfilling can be eliminated, corrosion and scaling can be reduced, and the service life of the system can be prolonged. Moreover, the system has a simple and reasonable structure and good economical performance in heat for power generation.
Description
Technical field
The present invention relates to the collaborative hot technical field of power generation of the multiple low-carbon (LC) energy, is a kind of novel terrestrial and photo-thermal combined generating system.
Background technique
Geothermal power is a kind of as natural energy resources, and advantage is a lot: reserves are big, low-carbon (LC), cleaning, can directly utilize, and it is for the heat generating, and its special advantages is: in the lifetime, be not subjected to the influence that rain or shine changes round the clock and can supply by continous-stable; Though its reserves are inferior to solar energy, wind energy, but 1.7 hundred million times of global coal storage heating value, in following 5 kilometers of the earth land, the total heat content of rock and underground water reaches 1.05 * 10 more than 15 ℃
22Kilojoule is equivalent to 9,950 trillion tons of standard coals.Consume 10,000,000,000 tons of standard coals year by the world and calculate, can satisfy the need of the human several ten thousand years energy.Moreover the identified geothermal resources of China are equivalent to 2,000 trillion tons of mark coals, account for the whole world and found out 40% of geothermal resources amount, and China's geothermal power generation unit electric motor power only accounts for 3.05 ‰ of the whole world, and installation platform number only accounts for 6.1 ‰.Cause this serious asymmetric reason, from the Technological Economy angle, the one, the high temperature resource in the geothermal resources of China, temperature is higher than 150 ℃ and only limits to Yangbajing, Tibet, sheep easily and mountain area, minority plateau such as Yunnan Tengchong, the geothermal resources of 90 ℃～150 ℃ of temperature, low temperature＜90 ℃ during all the other are, adopt the back both as hot power generation energy resource, the working medium enthalpy drop of steam turbine is very little, the thermal efficiency very low (only 3%～6%), thereby heat-economy is very poor.The 2nd, equipment corrosion is serious, promptly is perforated within 1 year; Dirt gathers and is exceedingly fast, and the several years can block pipeline; Recharging technique is immature, causes the heat yield of geothermal field to descend year by year, and Acceptable life seldom can be above 30 years.
Deficiency at above-mentioned geothermal power generation existence, 1) the present invention's proposition is a working medium with the low-boiling point material, as ammonia, green working medium such as carbon dioxide and organic working medium, geothermal power is made the thermal source of working medium vaporizer, solar energy is made the underground heat and the photo-thermal combined generating system of the thermal source of working medium superheater, mixing serial connection by underground heat and photo-thermal to provide than the existing higher superheated vapor of single geothermal heat source temperature for power cycle prime mover, like this, the working medium enthalpy drop is increased, promptly under hot fluid flow similarly, power can increase, and the thermal efficiency can improve, thereby can greatly improve the heat-economy of geothermal power generation unit; 2) the present invention's proposition is the geothermal power vaporizer with the down-hole plate-fin evaporator, and cycle fluid is sent into evaporation under the geothermal well, only draws the heat of geothermal water, do not extract geothermal water to the face of land, like this, both can improve the cycle fluid evaporating temperature, can save recharge well again, increase the service life; 3) the present invention adopts refrigeration cycle to mix the indirect air type of cooling that is connected in series with power cycle in the high temperature period, then adopt direct cooling air mode in the low temperature period, wherein the indirect air type of cooling can effectively be eliminated the adverse effect of ambient air temperature to prime mover exhaust back pressure, both can further increase the working medium enthalpy drop, improve the thermal efficiency, also can improve the wind loading rating of cooling system.
Summary of the invention
The objective of the invention is, a kind of novel terrestrial and photo-thermal combined generating system are provided, can unite and utilize geothermal power and solar energy to realize continuous, stable, efficient power generation, can accumulation of heat when solar radiant energy is sufficient, effectively heat release when solar radiant energy is not enough, the high ambient temperature period realizes that by the working medium compression set power and refrigeration mixed cycle make prime mover stable operation at full capacity, and the low ambient temperature period can make full use of the environmental friendliness power generation system of natural cold source.
Realize that the technological scheme that the object of the invention adopted is: a kind of novel terrestrial and photo-thermal combined generating system, it is characterized in that: it comprises that geothermal power vaporizer 2 gaseous working medium output terminals are connected with solar energy superheater 3 low temperature side input ends, solar energy superheater 3 low temperature side output terminals are connected with prime mover 4 input ends, prime mover 4 output terminals are connected with generator 5 input ends, prime mover relief opening 6 is communicated with working medium compression set 7 input ends by first stop valve 12, working medium compression set 7 output terminals are communicated with air cooling heat radiator 8 input ends, air cooling heat radiator 8 output terminals are communicated with liquid tank 10 input ends, and liquid tank 10 output terminals are communicated with geothermal power vaporizer 2 liquid refrigerant input ends by working medium booster pump 11.
The relief opening 6 of described prime mover 4 is communicated with working medium compression set 7 input ends and air cooling heat radiator 8 input ends respectively by three-way diverter valve 13.
Described geothermal power vaporizer 2 is down-hole type plate-fin evaporators; comprise: safety cover 22; plate-fin heat exchanger 23; in plate-fin heat exchanger 23, be provided with working medium evaporation channel 24 and geothermal fluid passage 25; the geothermal fluid recycle pump 28 that is enclosed within the safety cover 22 is connected with high-temperature geothermal fluid input tube 26 by the anticorrosion scale suppression processor 27 of geothermal fluid; geothermal fluid recycle pump 28 is communicated with geothermal fluid passage 25 inlets of plate-fin heat exchanger 23; geothermal fluid passage 25 outlet of plate-fin heat exchanger 23 is communicated with hot fluid output tube 29 cryogenically, and the liquid refrigerant supplying tube 20 of plate-fin heat exchanger 23 passes through its working medium evaporation channel 24 and is communicated with the gaseous working medium output tube 21 of plate-fin heat exchanger 23.
Described working medium compression set 7 is compression type, absorption or penetrate liquid air exhausting type working medium compression set.
A kind of novel terrestrial of the present invention and photo-thermal combined generating system advantage applies exist: the one, and the present invention adopts lower boiling material as power and the shared working medium of refrigeration cycle, as green working medium such as ammonia, carbon dioxide, organic working medium, both can under lower temperature, evaporate, can under the low ambient temperature condition, not freeze again; The 2nd, the present invention can in cryogenically heat energy be working medium evaporation thermal source, solar energy is the overheated thermal source of working medium, both can be generator set stable clean energy resource was provided, can improve the initial conditions of unit again, and united and utilize geothermal power and solar energy to realize stable, efficient power generation as thermal source; The 3rd, the present invention is the geothermal power vaporizer with the shaft bottom plate-fin evaporator, and cycle fluid is sent into evaporation under the geothermal well, only draws the heat of geothermal water, do not extract geothermal water to the face of land, both can improve the cycle fluid evaporating temperature, can save recharge well again, reduce corrosion, increase the service life; The 4th, it is stable that the present invention both can keep exhaust parameter, is not subjected to environmental influence, can utilize the natural low temperature resource of environment again; In the high ambient temperature period, the working medium exhaust enters the working medium compression set, enters air cooling heat radiator after boosting, and can make exhaust keep the influence that parameter is not subjected to ambient air temperature by adjusting compression ratio, maintains the design conditions operation; In the low ambient temperature period, air cooling heat radiator is directly sent in the working medium exhaust, can utilize the temperature of the natural cold source reduction exhaust of environment, increases the acting ability of unit; The 5th, system architecture of the present invention is simple, reasonable, not only can improve high temperature〉efficient of 150 ℃ of geothermal power generations, also can enlarge in being applied to warm 90-150 ℃, the geothermal power generation in ℃ Hot field, low temperature＜90, both can improve the heat-economy of geothermal power generation, the more important thing is the ratio of the low-carbon (LC) energy that has improved hot generating greatly, this is significant to improving China's primary energy structure.
Description of drawings
Fig. 1 is embodiment 1 a kind of novel terrestrial and a photo-thermal combined generating system structural representation.
Fig. 2 is embodiment 2 a kind of novel terrestrial and a photo-thermal combined generating system structural representation.
Fig. 3 is that shaft bottom plate-fin evaporator structure master looks schematic representation for geothermal power vaporizer 2.
Fig. 4 looks schematic representation for the left side of Fig. 3.
Fig. 5 penetrates a kind of novel terrestrial and the photo-thermal combined generating system structural representation of liquid air exhausting type working medium compression set 7 for embodiment 3 employing.
Among the figure: 1 geothermal well, 2 geothermal power vaporizers, 3 solar energy superheaters; 4 prime mover, 5 generators, 6 prime mover relief openings; 7 working medium compression sets, 8 air cooling heat radiators, 9 air cooling blower fans; 10 liquid tanks, 11 working medium booster pumps, 12 first stop valves; 13 three-way diverter valves, the 14 underground heat boreholes wall, 20 liquid refrigerant supplying tubes; 21 gaseous working medium output tubes, 22 safety covers, 23 plate-fin heat exchangers; 24 working medium evaporation channels, 25 geothermal fluid passages, 26 high-temperature geothermal fluid input tubes; the anticorrosion scale suppression processor of 27 geothermal fluids, 28 geothermal fluid recycle pumps, 29 hot fluid output tubes cryogenically; 31 solar energy field, 32 high temperature heat transport fluid jars, 33 first heat-loading body recycle pumps; 34 low temperature heat transport fluid jars, 35 second heat-loading body recycle pumps, 71 second stop valves; 72 working fluid pumps; 73 penetrate the liquid air ejector, 74 gas-liquid booster pumps, 75 gas-liquid separators.
Embodiment
The invention will be further described to utilize the drawings and specific embodiments below.
Embodiment 1: with reference to Fig. 1, a kind of novel terrestrial of the embodiment 1 and photo-thermal combined generating system comprise that geothermal power vaporizer 2 gaseous working medium output terminals are connected with solar energy superheater 3 low temperature side input ends, solar energy superheater 3 low temperature side output terminals are connected with prime mover 4 input ends, prime mover 4 output terminals are connected with generator 5 input ends, prime mover relief opening 6 is communicated with working medium compression set 7 input ends by first stop valve 12, working medium compression set 7 output terminals are communicated with air cooling heat radiator 8 input ends, air cooling heat radiator 8 output terminals are communicated with liquid tank 10 input ends, and liquid tank 10 output terminals are communicated with geothermal power vaporizer 2 liquid refrigerant input ends by working medium booster pump 11.
Embodiment 2: with reference to Fig. 2, a kind of novel terrestrial of embodiment 2 is identical with embodiment with the photo-thermal combined generating system, and difference only is that prime mover relief opening 6 is communicated with working medium compression set 7 input ends by three-way diverter valve 13 first output terminals; Prime mover relief opening 6 is communicated with air cooling heat radiator 8 input ends by three-way diverter valve 13 second output terminals.
With reference to Fig. 3 and Fig. 4; described geothermal power vaporizer 2 is down-hole type plate-fin evaporators; be that a kind of down-hole that is applicable to exchanges the compact type dividing wall type heat exchanger of underground heat for; for dwindling whole heat exchanger volume; and do not reduce even increase heat exchange area and adopt plate-fin structure; comprise: safety cover 22; plate-fin heat exchanger 23; in plate-fin heat exchanger 23, be provided with working medium evaporation channel 24 and geothermal fluid passage 25; the geothermal fluid recycle pump 28 that is enclosed within the safety cover 22 is connected with high-temperature geothermal fluid input tube 26 by the anticorrosion scale suppression processor 27 of geothermal fluid; geothermal fluid recycle pump 28 is communicated with geothermal fluid passage 25 inlets of plate-fin heat exchanger 23; geothermal fluid passage 25 outlet of plate-fin heat exchanger 23 is communicated with hot fluid output tube 29 cryogenically, and the liquid refrigerant supplying tube 20 of plate-fin heat exchanger 23 passes through its working medium evaporation channel 24 and is communicated with the gaseous working medium output tube 21 of plate-fin heat exchanger 23.
With reference to Fig. 5, described working medium compression set 7 is compression type, absorption or penetrate liquid air exhausting type working medium compression set.
Embodiment 3: with reference to Fig. 5, embodiment 3 is most preferred embodiments of a kind of novel terrestrial of the present invention and photo-thermal combined generating system: it comprises that geothermal power vaporizer 2 gaseous working medium output terminals are connected with solar energy superheater 3 low temperature side input ends, solar energy superheater 3 low temperature side output terminals are connected with prime mover 4 input ends, prime mover 4 output terminals are connected with generator 5 input ends, prime mover relief opening 6 is communicated with air cooling heat radiator 8 input ends by three-way diverter valve 13 second output terminals, prime mover relief opening 6 by three-way diverter valve 13 first output terminals with penetrate liquid air ejector 73 gaseous state suction sides and be communicated with; Penetrate liquid air ejector 73 output terminals and be communicated with gas-liquid separator 75 input ends by gas-liquid booster pump 74, gas-liquid separator 75 gaseous state output terminals are communicated with air cooling heat radiator 8 input ends, and air cooling heat radiator 8 output terminals are communicated with liquid tank 10 input ends; Gas-liquid separator 75 liquid output terminals are communicated with liquid tank 10 input ends, and liquid tank 10 output terminals are communicated with geothermal power vaporizer 2 liquid refrigerant input ends by working medium booster pump 11; Liquid tank 10 output terminals are communicated with working fluid pump 72 input ends by second stop valve 71, working fluid pump 72 output terminals with penetrate liquid air ejector 73 liquid injection ends and be communicated with; Solar energy superheater 3 high temperature side output terminals are communicated with low temperature heat transport fluid jar 34 input ends, low temperature heat transport fluid jar 34 output terminals are communicated with solar energy field 31 input ends by the second heat-loading body recycle pump 35, solar energy field 31 output terminals are communicated with high temperature heat transport fluid jar 32 input ends, and high temperature heat transport fluid jar 32 output terminals are communicated with solar energy superheater 3 high temperature side input ends by the first heat-loading body recycle pump 33.
The high ambient temperature period: implement power and the operation of refrigeration mixed cycle, it is overheated that the saturated gaseous working medium of geothermal power vaporizer 2 gaseous working medium output terminals enters solar energy superheater 3 low temperature sides, the overheated gaseous working medium of solar energy superheater 3 low temperature sides outlet enters prime mover 4 expansion actings, prime mover exhaust enters working medium compression set 7 by first stop valve 12, gaseous working medium after being compressed is directly sent into air cooling heat radiator 8 condensation heat releases, liquid refrigerant after condensing enters liquid tank 10, enter geothermal power vaporizer 2 liquid refrigerant input ends after liquid refrigerant in the liquid tank 10 boosts by working medium booster pump 11, finish power and the operation of refrigeration mixed cycle.
The low ambient temperature period: implement the power cycle operation, it is overheated that the saturated gaseous working medium of geothermal power vaporizer 2 gaseous working medium output terminals enters solar energy superheater 3 low temperature sides, the overheated gaseous working medium of solar energy superheater 3 low temperature sides outlet enters prime mover 6 expansion actings, prime mover exhaust enters air cooling heat radiator 8 condensation heat releases by commutation three-way valve 13 second output terminals, liquid refrigerant after condensing enters liquid tank 10, enter geothermal power vaporizer 2 liquid refrigerant input ends after liquid refrigerant in the liquid tank 10 boosts by working medium booster pump 11, finish the power cycle operation.
Described geothermal power vaporizer 2 is a down-hole type plate-fin evaporator, is that the compact type dividing wall type heat exchanger of underground heat is drawn in a kind of down-hole that is applicable to, its cold side is the passage of liquid refrigerant flow evaporation process, and for improving the heat exchange effect, the working medium evaporation channel is embedded in fin; Hot side is the geothermal fluid passage, and its structure is plate, and the protected cover 22 of whole plate-fin evaporator 23 peripheries is enclosed within wherein.Liquid refrigerant enters plate-fin heat exchanger 23 by liquid refrigerant supplying tube 20, and through flashing to gas-liquid attitude mixture in the working medium evaporation channel 24, saturated gaseous working medium enters solar energy superheater 3 by gaseous working medium output tube 21, finishes the working medium evaporation process; Geothermal water enters the anticorrosion scale suppression processor 27 of geothermal fluid by high-temperature geothermal fluid input tube 26, in the anticorrosion scale suppression processor 27 of geothermal fluid, handle the back and enter geothermal fluid passage 25 in the plate-fin heat exchanger 23 by geothermal fluid recycle pump 28 through anticorrosion, scale suppression, the geothermal water that is cooled is got back in the geothermal well by hot fluid output tube 29 cryogenically, finishes the underground circulation of geothermal water.
With reference to Fig. 5, a kind of novel terrestrial of the embodiment 3 and photo-thermal combined generating system working procedure are: it is overheated that the saturated gaseous working medium of geothermal power vaporizer 2 gaseous working medium output terminals enters solar energy superheater 3 low temperature sides, and the overheated gaseous working medium of solar energy superheater 3 low temperature sides outlet enters prime mover 6 expansion actings.In the low ambient temperature period, prime mover exhaust enters air cooling heat radiator by three-way diverter valve 13 second output terminals; In the high ambient temperature period, prime mover exhaust enters to penetrate in the liquid air ejector 73 by three-way diverter valve 13 first output terminals and mixes with high-pressure liquid working medium, the gas-liquid attitude mixture of penetrating 73 outlets of liquid air ejector enters gas-liquid separator 75 after gas-liquid booster pump 74 boosts, isolated gaseous working medium enters air cooling heat radiator 8 condensation heat releases, the liquid refrigerant of condensation enters liquid tank 10, the liquid refrigerant of liquid tank 10 outlets is got back to geothermal power vaporizer 2 liquid refrigerant input ends after working medium booster pump 11 boosts, finish working medium power cycle overall process; Gas-liquid separator 75 isolated liquid refrigerants enter liquid tank 10, the liquid refrigerant of liquid tank 10 outlets enters working fluid pump 72 through second stop valve 71, boost into the high pressure driving fluid through working fluid pump 72 and enter and penetrate liquid air ejector 73, finish the refrigeration cycle process; The high temperature heat transport fluid of solar energy field 31 outlets enters high temperature heat transport fluid jar 32 and is stored in wherein, the high temperature heat transport fluid of high temperature heat transport fluid jar 32 outlets enters the overheated saturated gaseous working medium of solar energy superheater 3 high temperature sides by the first heat-loading body recycle pump 33, the heat transport fluid that is cooled into low temperature enters low temperature heat transport fluid jar 34 and is stored in wherein, the low temperature heat transport fluid of low temperature heat transport fluid jar 34 outlets enters solar energy field 31 inlets by the second heat-loading body recycle pump 35, finishes solar energy heat absorbing, heat accumulation and overheated saturated gaseous working medium process.
A kind of novel terrestrial of the present invention and photo-thermal combined generating system, unite and utilize geothermal power and solar energy to improve the initial conditions of unit, with low-boiling point material, as ammonia, carbon dioxide and organic working medium etc. are working medium, these working medium can be at high temperature, middle gentleness cryogenically flashes to saturated vapor under the heat energy thermal source, cross hot working fluid with solar energy again, and the heat that solar energy is unnecessary is stored in the regenerative system, the steam initial temperature that can overcome the underground heat heating is low, thereby enthalpy drop is little, the shortcoming that generating efficiency is low, can " owe " again, effectively overcome the shortcoming that solar energy thermal-power-generating is limited by the uncertainty of solar irradiation, geothermal power and solar association heat supply with rich benefit, improved the working medium initial conditions, both increase capacity, improved cycle efficiency again, and then significantly improved the heat-economy of geothermal power generation.
A kind of novel terrestrial of the present invention and photo-thermal combined generating system adopt air cooling system.In the low ambient temperature period, air cooling heat radiator is directly sent in the working medium exhaust, ambient air temperature has determined the condensing temperature of air cooling heat radiator, because low boiling working fluid needn't be considered the problem that freezes in the cooling procedure, so can reduce delivery temperature to greatest extent, ambient air temperature is low more, delivery temperature is low more, so can reduce exhaust parameter, increase the unit enthalpy drop, improve generating efficiency, the enthalpy drops that get of this part utilize the low ambient temperature resource to obtain more, so can think that this cooling system can utilize the low ambient temperature resource.In the high ambient temperature period, the working medium exhaust enters sends into air cooling heat radiator after the working medium compression set boosts again, both can keep exhaust back pressure stable operation under design conditions, improve the Economy of prime mover, the influence of strong wind weather be can eliminate again, the safety in operation of system and the Utilization ratio of whole generating system improved exhaust back pressure.
Working medium compression set 7 of the present invention is to select existing compression type, absorption and penetrate a kind of of liquid air exhausting type respectively according to the on-site amblent air temperature condition of geothermal field and sunshine duration, wherein absorption is that in addition structural type updates on the conventional version basis, function is more suitable in this combined generating system needs: the difference of penetrating liquid air exhausting type and legacy equipment wherein is: 1) its geometrical construction size is to pass through based on laboratory data, and the combination that optimize maximum with mass ratio of induced-to-inducing air, 2) its driving fluid and driven fluid are same substance.
A kind of novel terrestrial of the present invention and photo-thermal combined generating system, once adopting ammonia is power cycle working medium, adopting China's certain geothermal well hot water of northeast is thermal source, its well head water-exit temperature is 65 ℃, 5 ℃ of deduction surface-type vaporizer heat transfer temperature differences, then the saturated evaporating temperature of ammonia is 60 ℃, saturation pressure is 2614Kpa, saturated ammonia enthalpy is 1491.5 KJ/kg, with solar energy its equipressure is superheated to 160 ℃ (decomposing easily because surpass 160 ℃ of ammonia), the enthalpy of overheated ammonia is 1798.1KJ/kg, then can make the working medium enthalpy drop increase 306.6KJ/kg, promptly under hot fluid flow similarly, the power of unit mass flow working medium can increase 306.6KW; If delivery temperature is all-33 ℃, the thermal efficiency can bring up to 44.6% by 27.9%, and the thermal efficiency has improved 16.7%, thereby has significantly improved the heat-economy of geothermal power generation unit.
Claims (4)
1. novel terrestrial and photo-thermal combined generating system, it is characterized in that: it comprises that geothermal power vaporizer (2) gaseous working medium output terminal is connected with solar energy superheater (3) low temperature side input end, solar energy superheater (3) low temperature side output terminal is connected with prime mover (4) input end, prime mover (4) output terminal is connected with generator (5) input end, prime mover relief opening (6) is communicated with working medium compression set (7) input end by first stop valve (12), working medium compression set (7) output terminal is communicated with air cooling heat radiator (8) input end, air cooling heat radiator (8) output terminal is communicated with liquid tank (10) input end, and liquid tank (10) output terminal is communicated with geothermal power vaporizer (2) liquid refrigerant input end by working medium booster pump (11).
2. a kind of novel terrestrial according to claim 1 and photo-thermal combined generating system is characterized in that: the relief opening (6) of described prime mover (4) is communicated with working medium compression set (7) input end and air cooling heat radiator (8) input end respectively by three-way diverter valve (13).
3. a kind of novel terrestrial according to claim 1 and photo-thermal combined generating system; it is characterized in that: described geothermal power vaporizer (2) structure is; comprise safety cover (22); plate-fin heat exchanger (23); in plate-fin heat exchanger (23), be provided with working medium evaporation channel (24) and geothermal fluid passage (25); the geothermal fluid recycle pump (28) that is enclosed within the safety cover (22) is connected with high-temperature geothermal fluid input tube (26) by the anticorrosion scale suppression processor of geothermal fluid (27); geothermal fluid recycle pump (28) is communicated with geothermal fluid passage (25) inlet of plate-fin heat exchanger (23); the outlet of the geothermal fluid passage (25) of plate-fin heat exchanger (23) is communicated with hot fluid output tube (29) cryogenically, and the liquid refrigerant supplying tube (20) of plate-fin heat exchanger (23) passes through its working medium evaporation channel (24) and is communicated with the gaseous working medium output tube (21) of plate-fin heat exchanger (23).
4. a kind of novel terrestrial according to claim 1 and photo-thermal combined generating system is characterized in that: described working medium compression set (7) is a compression type, absorption or penetrate liquid air exhausting type working medium compression set.
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| CN 201110179448 CN102287344B (en) | 2011-06-30 | 2011-06-30 | Novel geothermal and optothermal cogeneration system |
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| CN 201110179448 CN102287344B (en) | 2011-06-30 | 2011-06-30 | Novel geothermal and optothermal cogeneration system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103062000A (en) * | 2012-12-26 | 2013-04-24 | 中国科学院工程热物理研究所 | Power generation system for performing energy gradient utilization on geothermal energy and solar energy |
| CN103306917A (en) * | 2013-05-29 | 2013-09-18 | 上海盛合新能源科技有限公司 | United ammonia water thermoelectric conversion system for converting geothermal energy and solar energy |
| CN103306912A (en) * | 2013-05-29 | 2013-09-18 | 上海盛合新能源科技有限公司 | System for improving geothermal energy and solar energy integrated thermoelectric conversion efficiency |
| CN103423109A (en) * | 2012-05-22 | 2013-12-04 | 周登荣 | Combined power generation device through solar energy and geothermal energy |
| CN104481824A (en) * | 2014-12-10 | 2015-04-01 | 清华大学 | Enhanced geothermal and solar combined power generation method and system |
| CN104912585A (en) * | 2015-05-21 | 2015-09-16 | 中国矿业大学 | Liquid nitrogen system and method for nondestructively governing fire area in coal field |
| CN106917728A (en) * | 2017-04-18 | 2017-07-04 | 长沙紫宸科技开发有限公司 | Using geothermal energy and the clean electric power generation change system and method for solar energy |
| CN107762749A (en) * | 2017-10-20 | 2018-03-06 | 中国地质大学（武汉） | Low temperature geothermal power generation plant in a kind of distribution |
| WO2018102265A1 (en) * | 2016-11-29 | 2018-06-07 | COMBINED POWER LLC, dba HYPERLIGHT ENERGY | Systems and methods of storing energy from geothermal and solar resources |
| CN112781764A (en) * | 2020-12-31 | 2021-05-11 | 天津大学 | Low-temperature semiconductor thermoelectric generator power generation efficiency testing device and testing method |
| CN114704343A (en) * | 2022-03-28 | 2022-07-05 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Waste mine geothermal-photothermal coupling power generation system and power generation method thereof |
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