CN102182655B - Low-temperature Rankine dual-cycle power generating unit - Google Patents
Low-temperature Rankine dual-cycle power generating unit Download PDFInfo
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- CN102182655B CN102182655B CN 201110083852 CN201110083852A CN102182655B CN 102182655 B CN102182655 B CN 102182655B CN 201110083852 CN201110083852 CN 201110083852 CN 201110083852 A CN201110083852 A CN 201110083852A CN 102182655 B CN102182655 B CN 102182655B
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- 239000006096 absorbing agent Substances 0.000 claims abstract description 15
- 238000010248 power generation Methods 0.000 claims description 77
- 239000006200 vaporizer Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 125000004122 cyclic group Chemical group 0.000 abstract 7
- 230000005494 condensation Effects 0.000 description 8
- 238000009833 condensation Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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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 discloses a new-energy low-temperature Rankine dual-cycle power generating unit, comprising two closed cyclic power generating systems; after undergoing heat absorption by a heat absorber, a working medium flows through a compressor, a condenser, a working medium pump, an evaporator, an expanded power generating set and a heat exchanger in sequence to form a first closed cyclic power generating system; secondly, the other work medium flows through the condenser, the expanded power generating set, the heat exchanger and the working medium pump in sequence to form a second closed cyclic power generating system; the heat absorber and the evaporator both can absorb low-temperature heat energy in the air or water; the high-temperature and high-pressure working medium in the first closed cyclic power generating system exchanges heat with the liquid working medium in the second closed cyclic power generating system in the condenser; and the low-temperature and low-pressure working medium in the first closed cyclic power generating system exchanges heat with the low-temperature and low-pressure working medium in the second closed cyclic power generating system in the heat exchanger. The low-temperature Rankine dual-cycle power generating unit does not need an external cold source, has high heat efficiency, low investment and low cost, and successfully breaks through the technical difficulty that the heat efficiency in the low-temperature heat power generating system is low.
Description
Technical field
The present invention relates to a kind of generation of electricity by new energy device, especially a kind of low-temperature Rankine double-circulation power generation.
Background technique
The tellurian energy overwhelming majority all derives from the sun, no matter wind energy, water energy, biological energy source or fossil energy--coal, oil, rock gas, combustible ice.In today of energy growing tension, the clean utilization of power technology of new renewable green comes into one's own day by day.Now, in the new energy, the solar dynamic power technology such as waterpower, wind-force and solar power generation directly utilize technology-photovoltaic cell, minute surface heat build-up generation technology quite ripe; The hydroelectric power development potentiality are little; And wind-force, sunlight too disperses so that wind-force, solar power generation utilize directly that floor space is huge, one-time investment is high.Earth atmosphere every day is all at the energy that repeats to absorb and disperse solar radiation, and absorb in the environment liquid-air of solar heat energy, the solar thermal energy in the water upgrades every day, and is almost inexhaustible.Thereby people's thermal power generation technology in stepping up to study the environment liquid-air of new indirect utilization solar energy, in the water all.Wherein low-temperature solar energy heating power generation technology is the new and high technology of potential future.At present, known heat pump type low-temperature heat energy power generation device adopts in the heat pump enriched air, the low temperature solar thermal energy in the water adopts the Rankine cycle system generating again.Wherein heat pump mainly comprises compressor, condenser, flow controller, vaporizer; The Rankine cycle power generation system mainly comprises condenser, recycle pump, vaporizer, expansion power generation unit.This heat pump type low-temperature solar energy heating power generation technology not only operation of heat pump needs consumed energy, and the amount of heat that consumes of the condenser of Rankine cycle power generation system can flow out power generation system and is not used effectively.Its investment is high, especially the thermal efficiency is low.
Summary of the invention
The investment of existing heat pump type low-temperature heat energy power generation device is high in order to overcome, the low deficiency of the thermal efficiency especially, the invention provides a kind of low-temperature Rankine double-circulation power generation, this low-temperature Rankine double-circulation power generation need not the outer low-temperature receiver of system, and the thermal efficiency is high, investment is low, cost is low.
The technical solution adopted for the present invention to solve the technical problems is: this low-temperature Rankine double-circulation power generation comprises heat absorber, compressor, condenser, working medium pump, vaporizer, expansion power generation unit, the second expansion power generation unit, heat exchanger, the second working medium pump, it also comprises pipeline, annex and detection and the control gear that is connected in the system, it has two closed circulation power generation systems, and working medium is arranged in the closed system; Heat absorber, compressor, condenser, working medium pump, vaporizer, expansion power generation unit, heat exchanger are in turn connected to form the first closed circulation power generation system, and condenser, the second expansion power generation unit, heat exchanger, the second working medium pump are in turn connected to form the second closed circulation power generation system.In the first closed circulation power generation system, flow to compressor behind the heat energy of working medium in heat absorber absorption air, in the water, the High Temperature High Pressure working medium of compressed machine compression flows to heat release condensation after the liquid condensed working medium heat exchange in condenser and the second closed cycle system, condensation working medium is pressed into vaporizer through working medium pump again, the heat energy heating liquid refrigerant that vaporizer can absorb in low temperature environment fluid-air, in the water becomes high-pressure gaseous working medium, and then high-pressure gaseous working medium enters expansion power generation unit expansion acting generating; The expansion power generation machine set outlet is low-temp low-pressure working medium, low-temp low-pressure working medium absorbs the heat energy of the low-temp low-pressure working medium in the second closed cycle system again through heat exchanger, the low-temp low-pressure working medium of heat absorption flows to compressor again after heat absorber further absorbs heat energy in the air, in the water, expansion power generation machine set outlet pressure is determined by the inlet pressure of compressor, has formed like this first closed circulation power generation system.In the second closed circulation power generation system, liquid refrigerant becomes high-pressure gaseous working medium through the heat energy heating evaporation that condenser absorbs the high temperature refrigerant in the first closed cycle system, and then high-pressure gaseous working medium enters the second expansion power generation unit expansion acting generating; The second expansion power generation machine set outlet is low-temp low-pressure working medium, the more further heat release condensation in heat exchanger of low-temp low-pressure working medium, and condensation working medium is pressed into condenser through the second working medium pump again, has formed like this second closed circulation power generation system.The compressor of this low-temperature Rankine double-circulation power generation also can be the multistage compression unit; And its primary compressor can also directly be connected to the expansion power generation machine set outlet, to keep expansion power generation machine set outlet low pressure.Also can be connected between this low-temperature Rankine double-circulation power generation expansion power generation set main shaft and the compressor main shaft.The heat absorber of this low-temperature Rankine double-circulation power generation and heat exchanger are efficient heat-pipe heat-exchangers.This low-temperature Rankine double-circulation power generation also can be installed on car and boat and other machinery as direct driving force device or charging unit.This low-temperature Rankine double-circulation power generation also can be used for the low temperature heat resource power generations such as waste heat used heat underground heat.This low-temperature Rankine double-circulation power generation by-product cold air.
The invention has the beneficial effects as follows, this low-temperature Rankine double-circulation power generation need not the outer low-temperature receiver of system, and the thermal efficiency is high, investment is low, cost is low.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is the workflow schematic diagram of the embodiment of the invention.
1. heat absorbers among the figure, 2. compressor, 3. condenser, 4. working medium pump, 5. vaporizer, 6. expansion power generation unit, 7. the second working medium pump, 8. heat exchanger, 9. the second expansion power generation unit.
Embodiment
In the accompanying drawing illustrated embodiment, this low-temperature Rankine double-circulation power generation mainly comprises heat absorber (1), compressor (2), condenser (3), working medium pump (4), vaporizer (5), expansion power generation unit (6), the second working medium pump (7), heat exchange (8), the second expansion power generation unit (9); It also comprises pipeline, annex and detection and the control gear that is connected in the system, and it has two closed circulation power generation systems, and working medium is arranged in the closed system.In the first closed circulation power generation system, flow to compressor (2) behind the heat energy of working medium in heat absorber (1) absorption air, in the water, the High Temperature High Pressure working medium of compressed machine (2) compression flows to heat release condensation after the liquid condensed working medium heat exchange in condenser (3) and the second closed cycle system, condensation working medium is pressed into vaporizer (5) through working medium pump (4) again, the heat energy heating liquid refrigerant that vaporizer (5) can absorb in low temperature environment fluid-air, in the water becomes high-pressure gaseous working medium, and then high-pressure gaseous working medium enters expansion power generation unit (6) expansion acting generating; Expansion power generation unit (6) outlet is low-temp low-pressure working medium, low-temp low-pressure working medium absorbs the heat energy of the low-temp low-pressure working medium in the second closed cycle system again through heat exchanger (8), the low-temp low-pressure working medium of heat absorption flows to compressor (2) again after heat absorber (1) further absorbs heat energy in the air, in the water, expansion power generation unit (6) outlet pressure is determined by the inlet pressure of compressor (2), has formed like this first closed circulation power generation system.In the second closed circulation power generation system, liquid refrigerant becomes high-pressure gaseous working medium through the heat energy heating evaporation that condenser (3) absorbs the high temperature refrigerant in the first closed cycle system, and then high-pressure gaseous working medium enters the second expansion power generation unit (9) expansion acting generating; The outlet of the second expansion power generation unit (9) is low-temp low-pressure working medium, the more further heat release condensation in heat exchanger (8) of low-temp low-pressure working medium, and condensation working medium is pressed into condenser (3) through the second working medium pump (7) again, has formed like this second closed circulation power generation system.The compressor of this low-temperature Rankine double-circulation power generation (2) also can be the multistage compression unit; And its primary compressor can also directly be connected to the expansion power generation machine set outlet, to keep expansion power generation machine set outlet low pressure.Also can be connected between this low-temperature Rankine double-circulation power generation expansion power generation unit (6), the second expansion power generation unit (9) main shaft and compressor (2) main shaft.The heat absorber of this low-temperature Rankine double-circulation power generation (1) and heat exchanger (8) are efficient heat-pipe heat-exchangers.
Claims (2)
1. low-temperature Rankine double-circulation power generation, comprise heat absorber, compressor, condenser, working medium pump, vaporizer, the expansion power generation unit, the second expansion power generation unit, heat exchanger, the second working medium pump, it also comprises the pipeline that is connected in the system, annex and detection and control gear, it has two closed circulation power generation systems, working medium is arranged in the closed system, it is characterized in that: heat absorber, compressor, condenser, working medium pump, vaporizer, the expansion power generation unit, heat exchanger is in turn connected to form the first closed circulation power generation system, condenser, the second expansion power generation unit, heat exchanger, the second working medium pump is in turn connected to form the second closed circulation power generation system.
2. low-temperature Rankine double-circulation power generation according to claim 1, it is characterized in that: this low-temperature Rankine double-circulation power generation heat absorber and heat exchanger all are efficient heat-pipe heat-exchangers.
3. low-temperature Rankine double-circulation power generation according to claim 1 is characterized in that: this low-temperature Rankine double-circulation power generation is installed on car and boat and other machinery as direct driving force device or charging unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110083852 CN102182655B (en) | 2011-04-03 | 2011-04-03 | Low-temperature Rankine dual-cycle power generating unit |
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| CN 201110083852 CN102182655B (en) | 2011-04-03 | 2011-04-03 | Low-temperature Rankine dual-cycle power generating unit |
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| CN102182655A CN102182655A (en) | 2011-09-14 |
| CN102182655B true CN102182655B (en) | 2013-03-06 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748262A (en) * | 2012-07-25 | 2012-10-24 | 哈尔滨现代控制工程研究所 | Conversion of heat from air into shaft work by utilizing non-HO2 cycle fluid |
| CN102817658B (en) * | 2012-09-24 | 2015-05-13 | 泰山石膏股份有限公司 | Gypsum board production line moisture air low-temperature power generating technology |
| ES2954106T3 (en) * | 2013-01-24 | 2023-11-20 | Hinders Edward | Combined Brayton/Rankine cycle steam and gas turbine generation system operated in two closed loops |
| CN103867242B (en) * | 2013-02-28 | 2016-01-13 | 摩尔动力(北京)技术股份有限公司 | Ultralow temperature heat-source engine |
| US9145795B2 (en) * | 2013-05-30 | 2015-09-29 | General Electric Company | System and method of waste heat recovery |
| US9587520B2 (en) * | 2013-05-30 | 2017-03-07 | General Electric Company | System and method of waste heat recovery |
| US9593597B2 (en) | 2013-05-30 | 2017-03-14 | General Electric Company | System and method of waste heat recovery |
| CN106286170B (en) * | 2016-08-15 | 2018-10-30 | 西安交通大学 | Solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine electricity generation system |
| CN107587907A (en) * | 2017-09-07 | 2018-01-16 | 郑成勋 | A kind of working system and method using low-temperature heat source |
| CN110187272A (en) * | 2019-05-31 | 2019-08-30 | 深圳大学 | A kind of electric power self-circulation system of simulation geothermal power generation plant test |
| CN113931710A (en) * | 2021-10-20 | 2022-01-14 | 郑小涛 | Combined cooling and power generation system |
| CN117028203B (en) * | 2023-08-07 | 2024-07-09 | 烟台东德氢能技术有限公司 | Low-pressure heat exchange circulating liquid circulation method |
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| JP2007078260A (en) * | 2005-09-14 | 2007-03-29 | Sanden Corp | Thermal drive power generation air conditioning device |
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- 2011-04-03 CN CN 201110083852 patent/CN102182655B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007078260A (en) * | 2005-09-14 | 2007-03-29 | Sanden Corp | Thermal drive power generation air conditioning device |
| CN101025096A (en) * | 2007-03-27 | 2007-08-29 | 陈深佃 | Generating system utilizing low-temperature heat-source or environment heat-source to generat power |
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| CN202081927U (en) * | 2011-04-03 | 2011-12-21 | 罗良宜 | Low-temperature Rankine double-circulation power generation device |
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