CN102606241A - Power generating system based on supercritical carbon dioxide - Google Patents
Power generating system based on supercritical carbon dioxide Download PDFInfo
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- CN102606241A CN102606241A CN2012101039851A CN201210103985A CN102606241A CN 102606241 A CN102606241 A CN 102606241A CN 2012101039851 A CN2012101039851 A CN 2012101039851A CN 201210103985 A CN201210103985 A CN 201210103985A CN 102606241 A CN102606241 A CN 102606241A
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Abstract
The invention relates to the technical field of power generating systems and methods, in particular to a power generating system based on supercritical carbon dioxide, which comprises a compressor, a heat collector, a carbon dioxide turbine, a generator and a cooling device. An outlet of the compressor is connected with an inlet of the heat collector, an outlet of the heat collector is connected with an inlet of the carbon dioxide turbine, an output end of the carbon dioxide turbine is connected with an input end of the generator, an outlet of the carbon dioxide turbine is connected with an inlet of the cooling device, an outlet of the cooling device is connected with an inlet of the compressor, and accordingly a loop is formed. Heat is absorbed from the outside by the supercritical carbon dioxide in the closed loop to carry out heat circulation, and accordingly the power generating system not only can be used for generating power, but also can provide air conditioning refrigeration and hot water for users. Compared with a traditional power generation mode by the aid of steam, the power generating system has the advantages that power generation efficiency is higher than that of the traditional power generation mode by the aid of steam by 10% to 20%, the system is exquisite and is compact in structure and free of environmental pollution, and equipment cost is low.
Description
Technical field
The present invention relates to power generation system and method and technology field, be specifically related to a kind of power generation system based on supercritical carbon dioxide.
Background technique
The countries in the world of energy problem's puzzlement at present, the electricity-generating method of seeking high-efficiency environment friendly is extremely urgent.Present in the world existing forms of electricity generation roughly has so several kinds: hydroelectric power, thermal power generation, tidal power generation, nuclear power generation, wind energy power and solar electrical energy generation etc.Solar electrical energy generation is both economical, but, reason such as manufacturing technology difficulty big huge owing to gathering-device can not form the fairly large daily life needs that provide.Nuclear power generation is also both economical, but because safety problem makes us frightened, can not popularize rapidly.Thermal power generation is primary in occupation of the energy production world amount; Because it is a kind of device that utilizes converting chemical energy into electric energy; During this transfer, a large amount of coal burnings has produced a large amount of harmful matters and has entered atmosphere, has brought catastrophic threats for human lives's primary condition.Existing hydroelectric installation; Though belong to the utilization of the reproducibility energy; But, build a complete unit, need barrage (river) to build a dam, build reservoir, resettlement immigrant, build conveyance systems such as diversion canal, ship lock; Engineering cost is amazingly high, to such an extent as to some immiseration country can not build this engineering.In addition, this unit requires reasons such as manufacturing technology height, high, the in service quick runner serious wear of cost, maintenance expenses height, and the actual motion cost is very high.The more important thing is that this hydroelectric installation is that the drop (potential energy of water body) that utilizes flowing water carries out transformation of energy, on rivers, can not build too many same sampling device.Wind-power electricity generation industry development prospect is boundless, because wind-power electricity generation does not have fuel problem, also can not produce radiation or atmospheric pollution, but its efficient is low, involves great expense, and technology haves much room for improvement, and manages perfect inadequately.Therefore it is extremely urgent to seek new-generation technology efficient, cheap, that do not have harm and environmental protection.
The supercritical carbon dioxide generation technology is novel in the world now, one of clean coal power generation technology efficiently.CO
2Be acknowledged as environmental protection, the natural sex working medium fluid of cleaning.CO
2Working medium is different from the working medium such as employed fluorine-containing, chloride in traditional energy conversion and the air-conditioning system, and its greenhouse effects of the earth exponential sum depletion of the ozone layer index is all well below fluid working substance commonly used at present.Because day by day seriously changing of environmental pollution at present, depletion of the ozone layer and greenhouse effects of the earth, developed countries such as Europe have made superseded fluorine chlorine class at the detail time table with fluid, so progressively eliminate fluorine chlorine working medium, employing CO
2Become trend of the times Deng natural sex working medium.Simultaneously because CO
2Special reasons such as rerum natura are with CO
2Be applied in the solar energy converting, can improve the efficient of energy conversion.Simultaneously because supercritical fluid has superpower temperature conductivity in some cases, so the efficient of this series technique integral body is higher.
Summary of the invention
The object of the present invention is to provide the power generation system based on supercritical carbon dioxide of a kind of generating efficiency height, non-environmental-pollution.
In order to achieve the above object, the technological scheme of the present invention's employing is:
A kind of power generation system based on supercritical carbon dioxide comprises compressor, heat collector, carbon dioxide turbo machine, generator and cooling unit; The outlet of said compressor links to each other with the inlet of said heat collector, and the outlet of said heat collector links to each other with the inlet of said carbon dioxide turbo machine, and the output terminal of said carbon dioxide turbo machine links to each other with the input end of said generator; The outlet of said carbon dioxide turbo machine links to each other with the inlet of said cooling unit, and the outlet of said cooling unit links to each other with the inlet of said compressor, forms a circulation.
In the such scheme, the outlet of said compressor links to each other with the inlet of said carbon dioxide turbo machine.
In the such scheme, said power generation system also comprises regenerative heat exchanger, and first inlet of said regenerative heat exchanger links to each other with the outlet of said compressor, and first outlet of said regenerative heat exchanger links to each other with the inlet of said heat collector; Second inlet of said regenerative heat exchanger links to each other with the outlet of said carbon dioxide turbo machine, and second outlet of said regenerative heat exchanger links to each other with the inlet of said cooling unit.
In the such scheme, said cooling unit is a heat exchanger.
In the such scheme, said cooling unit is an absorption chiller.
In the such scheme; Said cooling unit is heat exchanger and absorption chiller; Be provided with absorption chiller and heat exchanger successively on the pipeline between the outlet of said carbon dioxide turbo machine and the inlet of said compressor, perhaps, be provided with heat exchanger and absorption chiller successively.
In the such scheme, the heat exchange medium in the said heat exchanger is a water.
In the such scheme, said power generation system adopts carbon dioxide as fluid working substance.
In the such scheme, said carbon dioxide in 80～200 barometric pressure, 35～600 ℃ of temperature ranges, the closed circulation of compressing, heat, expand, cooling off.
In the such scheme, said heat collector adopts external heat source, and said external heat source is the thermal source that solar energy, industrial waste heat and fuel produce.
Compared with prior art, the beneficial effect of technological scheme generation of the present invention is:
The present invention utilizes supercritical carbon dioxide in the circulation of sealing, to carry out thermodynamic cycle from outside heat absorption, not only can generate electricity, and can also air conditioner refrigerating and hot water be provided for the user.The present invention compares with traditional water vapour generating, and generating efficiency is high by 10%～20%, and system of the present invention is exquisite, compact structure, and installation cost is cheap, non-environmental-pollution.
Description of drawings
The structural representation that Fig. 1 provides for the embodiment of the invention based on the power generation system of supercritical carbon dioxide;
Fig. 2 is the temperature and the pressure variation of carbon dioxide in the embodiment of the invention;
Fig. 3 is the survey data figure of carbon dioxide uninterruptable power generation in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment technological scheme of the present invention is elaborated.
As shown in Figure 1, the embodiment of the invention provides a kind of power generation system based on supercritical carbon dioxide, comprises compressor 1, heat collector 2, carbon dioxide turbo machine 3, generator 4 and cooling unit, and wherein cooling unit is heat exchanger 6 and absorption chiller 7.The outlet of compressor 1 is divided into two-way; One the tunnel directly links to each other with the inlet of carbon dioxide turbo machine 3; Another road links to each other with the inlet of the heat collector 2 that adopts external heat source; The outlet of heat collector 2 links to each other with the inlet of carbon dioxide turbo machine 3, and the output terminal of carbon dioxide turbo machine 3 is connected with the input end of generator 4.Because said power generation system adopts carbon dioxide as fluid working substance; Carbon dioxide forms supercritical carbon dioxide through compressor 1 pressurization; Supercritical carbon dioxide can directly promote the rotation of carbon dioxide turbo machine 3, generates electricity thereby drive generator 4, and the electric power of cleaning is provided; Supercritical carbon dioxide also can pass through heat collector 2 and add the dark supercritical carbon dioxide of thermosetting, and dark then supercritical carbon dioxide promotes carbon dioxide turbo machine 3 again, generates electricity thereby drive generator 4.Above-mentioned dual mode all can be realized utilizing carbon dioxide to generate electricity, and just has stronger energy through the dark supercritical carbon dioxide after the heating, and the effect that promotion carbon dioxide turbo machine 3 generates electricity is more excellent.
On the basis of such scheme; In order to improve rate of energy; Said power generation system also comprises through regenerative heat exchanger 5, and the outlet of carbon dioxide turbo machine 3 is linked to each other with the inlet of regenerative heat exchanger 5, and the outlet of regenerative heat exchanger 5 links to each other with heat exchanger 6 with absorption chiller 7 successively; The outlet of heat exchanger 6 links to each other with the inlet of compressor 1, forms a circulation thus.The carbon dioxide of gaseous state that comes out from carbon dioxide turbo machine 3 and/or liquid high temperature gets into regenerative heat exchanger 5; Regenerative heat exchanger 5 absorbs the waste heat of this state carbon dioxide; Can be used to heat the supercritical carbon dioxide of first entering regenerative heat exchanger 5, or become the thermal source of absorption chiller 7, the air conditioner refrigerating function is provided; Can also be further in heat exchanger 6 by water cooling, hot water is provided.After this, carbon dioxide is cooled to liquid state, passes through the pressurization of compressor 1 once more; Get into heat collector 2; So carry out [thermodynamic, just can from extra powers such as solar energy, obtain electric power, air conditioner refrigerating and hot water etc. continuously, satisfy requirements of different users.
In the present embodiment; Adopted absorption chiller 7 and heat exchanger 6 to the cooling of lowering the temperature of the carbon dioxide of the high temperature of the gaseous state that comes out from carbon dioxide turbo machine 3 and/or liquid state simultaneously; So that once more carbon dioxide is pressurizeed; In the middle of reality is used, if only need so absorption chiller 7 or heat exchanger 6 can only be set between regenerative heat exchanger 5 and compressor 1 for the user provides air conditioner refrigerating or hot water is provided.
Be in 80～200 barometric pressure, 35 ℃～600 ℃ temperature ranges through the supercritical carbon dioxide after compressor 1 pressurization in the present embodiment, the closed circulation of compressing, heat, expand, cooling off.As shown in Figure 2, can find out the variation of carbon dioxide phase in the embodiment of the invention, confirm the carbon dioxide phase-state change according to this phase diagram.
The external heat source that heat collector 2 adopts in the present embodiment is the thermal source that fuel such as solar energy, industrial waste heat and coal, oil, rock gas, biomass produce.
As shown in Figure 3, when the embodiment of the invention is utilized the carbon dioxide uninterruptable power generation, only depend on the heat of outside input can export about 200 watts electric power continuously.
The present invention can be used as distributed energy supply system, locates to provide electric power for residential quarter, hotel, restaurant, school and commercial building etc., and air conditioner and hot water etc. are provided.The present invention utilizes supercritical carbon dioxide generating, and its efficient is than generate electricity high 10%～20% efficient of traditional water vapour, and the present invention can also provide air conditioner refrigerating and hot water etc. except generating; Even in case of emergency, when taking place, still can electric power, air conditioner and hot water etc. be provided for the user like grid power interruption, disaster and other unexpected incidents.Because the present invention can fully use the free energy (solar energy or used heat etc.), both clean environment firendlies, non-environmental-pollution also can reduce cost, and the potentiality in market are very huge.
Above-described embodiment; The object of the invention, technological scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely embodiment of the present invention; Be not limited to the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the power generation system based on supercritical carbon dioxide is characterized in that: comprise compressor, heat collector, carbon dioxide turbo machine, generator and cooling unit; The outlet of said compressor links to each other with the inlet of said heat collector, and the outlet of said heat collector links to each other with the inlet of said carbon dioxide turbo machine, and the output terminal of said carbon dioxide turbo machine links to each other with the input end of said generator; The outlet of said carbon dioxide turbo machine links to each other with the inlet of said cooling unit, and the outlet of said cooling unit links to each other with the inlet of said compressor, forms a circulation.
2. the power generation system based on supercritical carbon dioxide as claimed in claim 1 is characterized in that: the outlet of said compressor links to each other with the inlet of said carbon dioxide turbo machine.
3. the power generation system based on supercritical carbon dioxide as claimed in claim 1; It is characterized in that: said power generation system also comprises regenerative heat exchanger; First inlet of said regenerative heat exchanger links to each other with the outlet of said compressor, and first outlet of said regenerative heat exchanger links to each other with the inlet of said heat collector; Second inlet of said regenerative heat exchanger links to each other with the outlet of said carbon dioxide turbo machine, and second outlet of said regenerative heat exchanger links to each other with the inlet of said cooling unit.
4. the power generation system based on supercritical carbon dioxide as claimed in claim 1 is characterized in that: said cooling unit is a heat exchanger.
5. the power generation system based on supercritical carbon dioxide as claimed in claim 1 is characterized in that: said cooling unit is an absorption chiller.
6. the power generation system based on supercritical carbon dioxide as claimed in claim 1; It is characterized in that: said cooling unit is heat exchanger and absorption chiller; Be provided with absorption chiller and heat exchanger successively on the pipeline between the outlet of said carbon dioxide turbo machine and the inlet of said compressor; Perhaps, be provided with heat exchanger and absorption chiller successively.
7. like claim 4 or 6 described power generation systems based on supercritical carbon dioxide, it is characterized in that: the heat exchange medium in the said heat exchanger is a water.
8. the power generation system based on supercritical carbon dioxide as claimed in claim 1 is characterized in that: said power generation system adopts carbon dioxide as fluid working substance.
9. the power generation system based on supercritical carbon dioxide as claimed in claim 8 is characterized in that: said carbon dioxide in 80～200 barometric pressure, 35～600 ℃ of temperature ranges, the closed circulation of compressing, heat, expand, cooling off.
10. the power generation system based on supercritical carbon dioxide as claimed in claim 1 is characterized in that: said heat collector adopts external heat source, and said external heat source is the thermal source that solar energy, industrial waste heat and fuel produce.
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| CN2012101039851A CN102606241A (en) | 2012-04-10 | 2012-04-10 | Power generating system based on supercritical carbon dioxide |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103306885A (en) * | 2013-06-30 | 2013-09-18 | 苏州市牛勿耳关电器科技有限公司 | Urban heating based on Internet of Things |
| CN103983036A (en) * | 2014-05-30 | 2014-08-13 | 西安交通大学 | CO2 circulation poly-generation system for waste heat recovery of internal combustion engine |
| CN104533556A (en) * | 2014-12-17 | 2015-04-22 | 中国科学院广州能源研究所 | Carbon dioxide gas-liquid phase change energy storage method and device for achieving method |
| CN104603403A (en) * | 2012-08-31 | 2015-05-06 | 福图姆股份公司 | Method and system for energy storing and short-term power generation |
| CN104863653A (en) * | 2015-04-21 | 2015-08-26 | 中国石油大学(华东) | Carbon dioxide thermal energy power generation device and method |
| CN105355247A (en) * | 2015-11-19 | 2016-02-24 | 中国核动力研究设计院 | Novel molten salt reactor energy transmission system with supercritical carbon dioxide |
| CN105775086A (en) * | 2016-03-22 | 2016-07-20 | 石家庄新华能源环保科技股份有限公司 | Steamship using carbon dioxide stored energy as power |
| CN105927299A (en) * | 2016-04-22 | 2016-09-07 | 石家庄新华能源环保科技股份有限公司 | Carbon dioxide energy storage and supply system |
| CN105971678A (en) * | 2016-05-10 | 2016-09-28 | 石家庄新华能源环保科技股份有限公司 | System utilizing supercritical carbon dioxide to supply energy |
| CN107702367A (en) * | 2017-09-26 | 2018-02-16 | 西安交通大学 | A kind of driving combined power and cooling system of low-temperature heat source based on carbon dioxide working medium and method of work |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104603403A (en) * | 2012-08-31 | 2015-05-06 | 福图姆股份公司 | Method and system for energy storing and short-term power generation |
| CN103306885A (en) * | 2013-06-30 | 2013-09-18 | 苏州市牛勿耳关电器科技有限公司 | Urban heating based on Internet of Things |
| CN103983036B (en) * | 2014-05-30 | 2016-06-08 | 西安交通大学 | A kind of CO2 reclaimed for afterheat of IC engine circulates polygenerations systeme |
| CN103983036A (en) * | 2014-05-30 | 2014-08-13 | 西安交通大学 | CO2 circulation poly-generation system for waste heat recovery of internal combustion engine |
| CN104533556A (en) * | 2014-12-17 | 2015-04-22 | 中国科学院广州能源研究所 | Carbon dioxide gas-liquid phase change energy storage method and device for achieving method |
| CN104863653A (en) * | 2015-04-21 | 2015-08-26 | 中国石油大学(华东) | Carbon dioxide thermal energy power generation device and method |
| CN104863653B (en) * | 2015-04-21 | 2016-02-24 | 中国石油大学(华东) | A kind of carbon dioxide heat generating device and method |
| CN105355247A (en) * | 2015-11-19 | 2016-02-24 | 中国核动力研究设计院 | Novel molten salt reactor energy transmission system with supercritical carbon dioxide |
| CN105775086A (en) * | 2016-03-22 | 2016-07-20 | 石家庄新华能源环保科技股份有限公司 | Steamship using carbon dioxide stored energy as power |
| CN105775086B (en) * | 2016-03-22 | 2018-03-16 | 石家庄新华能源环保科技股份有限公司 | It is a kind of to utilize the steamer that carbon dioxide energy storage is power |
| CN105927299A (en) * | 2016-04-22 | 2016-09-07 | 石家庄新华能源环保科技股份有限公司 | Carbon dioxide energy storage and supply system |
| CN105927299B (en) * | 2016-04-22 | 2017-05-03 | 石家庄新华能源环保科技股份有限公司 | Carbon dioxide energy storage and supply system |
| CN105971678A (en) * | 2016-05-10 | 2016-09-28 | 石家庄新华能源环保科技股份有限公司 | System utilizing supercritical carbon dioxide to supply energy |
| CN107702367A (en) * | 2017-09-26 | 2018-02-16 | 西安交通大学 | A kind of driving combined power and cooling system of low-temperature heat source based on carbon dioxide working medium and method of work |
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Application publication date: 20120725 |