CN113586183A - Energy recovery device combining generator set and polymerization heat pump and working method - Google Patents
Energy recovery device combining generator set and polymerization heat pump and working method Download PDFInfo
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- CN113586183A CN113586183A CN202110830906.6A CN202110830906A CN113586183A CN 113586183 A CN113586183 A CN 113586183A CN 202110830906 A CN202110830906 A CN 202110830906A CN 113586183 A CN113586183 A CN 113586183A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides an energy recovery device combining a generator set and a polymerization heat pump and a working method, wherein the energy recovery device comprises the following steps: the system comprises a first refrigerant circulating pipeline, a working medium circulating pipeline, a heating pipeline and a second refrigerant circulating pipeline; the working medium circulation pipeline is provided with a working medium precooler, a working medium heater and a working medium preheater; the first refrigerant circulating pipeline is connected with the working medium precooler, the heating pipeline is connected with the working medium heater, and the second refrigerant circulating pipeline is connected with the working medium preheater; an intermediate energy exchanger is arranged between the first refrigerant circulating line and the second refrigerant circulating line. According to the invention, the first refrigerant circulating pipeline is used for recovering the waste heat of the working medium circulating pipeline, and the waste heat is recycled and used for preheating the carbon dioxide through the second refrigerant circulating pipeline, so that the utilization rate of the waste heat of the generator set is greatly improved.
Description
Technical Field
The invention relates to the field of power generation and heat pumps, in particular to an energy recovery device combining a generator set and a polymerization heat pump and a working method.
Background
In the existing supercritical carbon dioxide brayton cycle generator set, carbon dioxide is precooled before entering a compressor to be compressed, and is heated before entering a turbine to generate power. At present, the heat of the carbon dioxide is mainly absorbed by cooling water and then recycled; heated in a boiler or nuclear reactor for the generation of electricity. The problem with this approach is that the use of the carbon dioxide waste heat involves multiple heat transfer processes, which inevitably increases the energy losses. Meanwhile, the carbon dioxide is heated by heat generated by the boiler, fossil energy can be greatly consumed, and the carbon emission is increased.
Particularly to a Brayton cycle power generation system, the problem of effectively recovering waste heat is not solved yet.
Patent document CN110566297A relates to heat energy power generation technical field, discloses a supercritical carbon dioxide brayton cycle system, including compressor, regenerator, heat source, turbine and cooler, the regenerator includes preheating side and backheating side, and compressor, preheating side, heat source, turbine, backheating side and cooler connect gradually, still includes the ejector, and the high-pressure jet inlet of ejector is connected with the exit linkage of compressor, and the low pressure drainage entry and the carbon dioxide gas storage device of ejector are connected, and the export of ejector and the entry linkage of cooler.
Patent document CN211648263U provides a brayton cycle power generation system including: a compressor, a heater, a turbine, and a cooler. The cooler comprises a first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit is used for exchanging heat with the working medium flowing in through the first input end. The second heat exchange unit is arranged underground, and the cooling medium which flows out of the second output end and is subjected to heat exchange enters the second heat exchange unit, so that the cooling medium is subjected to heat exchange with the ground.
None of the above prior art techniques addresses the problem of energy recovery.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an energy recovery device combining a generator set and a polymerization heat pump and a working method.
According to the invention, the energy recovery device combining the generator set and the polymerization heat pump is characterized by comprising the following components: the system comprises a first refrigerant circulating pipeline, a working medium circulating pipeline, a heating pipeline and a second refrigerant circulating pipeline;
the working medium circulation pipeline is provided with a working medium precooler, a working medium heater and a working medium preheater;
the first refrigerant circulating pipeline is connected with the working medium precooler, the heating pipeline is connected with the working medium heater, and the second refrigerant circulating pipeline is connected with the working medium preheater;
an intermediate energy exchanger is arranged between the first refrigerant circulating line and the second refrigerant circulating line.
Preferably, the working fluid circulation line further includes: the system comprises a working medium compressor, a turbine and an energy recoverer;
the first interface of the working medium precooler is connected with one end of the working medium compressor;
the other end of the working medium compressor is connected with a first interface of the energy recoverer;
the second interface of the energy recoverer is connected with the first interface of the working medium preheater;
the second interface of the working medium preheater is connected with the first interface of the working medium heater;
the second interface of the working medium heater is connected with one end of the turbine;
the other end of the turbine is connected with a third interface of the energy recoverer;
and the fourth interface of the energy recoverer is connected with the second interface of the working medium precooler.
Preferably, the first refrigerant cycle line further includes: a first refrigerant throttle and a first heat pump compressor;
the third interface of the working medium precooler is connected with one end of the first heat pump compressor;
the other end of the first heat pump compressor is connected with a first interface of the intermediate energy exchanger;
the second interface of the intermediate energy exchanger is connected with one end of the first refrigerant throttling valve;
the other end of the first refrigerant throttling valve is connected with a fourth interface of the working medium precooler.
Preferably, the second refrigerant cycle line further includes: a second heat pump compressor and a second refrigerant throttle;
the third interface of the intermediate energy exchanger is connected with one end of the second heat pump compressor;
the other end of the second heat pump compressor is connected with a third interface of the working medium preheater;
the fourth interface of the working medium preheater is connected with one end of the second refrigerant throttle valve;
and the other end of the second refrigerant throttling valve is connected with a fourth interface of the intermediate energy exchanger.
Preferably, a working medium is arranged in the working medium circulation pipeline.
Preferably, a first refrigerant is provided in the first refrigerant circulation line, the first refrigerant circulating in the first refrigerant circulation line;
a second refrigerant is provided in the second refrigerant circulation line, and the second refrigerant circulates in the second refrigerant circulation line.
Preferably, the first refrigerant comprises ammonia and R600a, the second refrigerant comprises water and R1233zd (E);
the working fluid comprises carbon dioxide.
Preferably, the working method of the energy recovery device combining the generator set and the polymerization heat pump comprises the following steps:
step S1, the carbon dioxide working medium enters the working medium compressor after exchanging heat with the first refrigerant through the working medium precooler, the carbon dioxide working medium is heated again through the energy recoverer after being compressed to a high-pressure high-temperature state, the carbon dioxide working medium enters the working medium preheater for preheating, the carbon dioxide working medium enters the working medium heater and enters the turbine after being heated by the heating pipeline, the carbon dioxide working medium is changed into low-temperature and low-pressure after generating electricity in the turbine, and the carbon dioxide working medium enters the energy recoverer for exchanging heat and then enters the working medium precooler again;
step S2, compressing the first refrigerant to high temperature and high pressure by the first heat pump compressor after the first refrigerant is heated by heat exchange, transferring heat to the second refrigerant by the first refrigerant through the intermediate energy exchanger, cooling the first refrigerant and reducing the temperature and pressure by the first refrigerant throttle valve, and passing the first refrigerant through the working medium precooler again;
step S3, the second refrigerant is heated in the intermediate energy exchanger and then is pressurized by the second heat pump compressor, the second refrigerant enters the working medium preheater to transfer heat to the carbon dioxide working medium, the second refrigerant is cooled and then is cooled and depressurized by the second refrigerant throttle valve, and the second refrigerant enters the intermediate energy exchanger again;
step S4, repeat the above steps S1 to S3.
Preferably, the first refrigerant circulation line is provided as a low temperature stage refrigerant circulation line, and the second refrigerant circulation line is provided as a high temperature stage refrigerant circulation line.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the first refrigerant circulating pipeline is used for recovering the waste heat of the working medium circulating pipeline and recycling the waste heat for preheating carbon dioxide, so that the utilization rate of the waste heat of the working medium circulating pipeline is greatly improved;
2. in the invention, part of heat of the working medium circulation pipeline is from the second refrigerant circulation pipeline, so that the utilization rate of energy is greatly improved, the combustion of fossil energy is reduced and the carbon emission is reduced compared with the traditional combustion mode.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the connection of the present energy recovery device;
shown in the figure:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
As shown in fig. 1, an energy recovery device combining a generator set and a polymer heat pump includes: the system comprises a first refrigerant circulating pipeline 1, a working medium circulating pipeline 2, a heating pipeline 3 and a second refrigerant circulating pipeline 15; the working medium circulation pipeline 2 includes: the energy recovery device comprises a working medium precooler 4, a working medium compressor 5, a turbine 6, an energy recoverer 10, a working medium heater 7 and a working medium preheater 11, wherein a first interface of the working medium precooler 4 is connected with one end of the working medium compressor 5, the other end of the working medium compressor 5 is connected with a first interface of the energy recoverer 10, a second interface of the energy recoverer 10 is connected with a first interface of the working medium preheater 11, a second interface of the working medium preheater 11 is connected with a first interface of the working medium heater 7, a second interface of the working medium heater 7 is connected with one end of the turbine 6, the other end of the turbine 6 is connected with a third interface of the energy recoverer 10, and a fourth interface of the energy recoverer 10 is connected with a second interface of the working medium precooler 4. The first refrigerant circulating pipeline 1 is connected with a working medium precooler 4, the heating pipeline 3 is connected with a working medium heater 7, the second refrigerant circulating pipeline 15 is connected with a working medium preheater 11, an intermediate energy exchanger 13 is arranged between the first refrigerant circulating pipeline 1 and the second refrigerant circulating pipeline 15, a carbon dioxide working medium is arranged in the working medium circulating pipeline 2, and the second refrigerant comprises water and R1233zd (E).
The first refrigerant cycle line 1 further includes: a first refrigerant throttle valve 8 and a first heat pump compressor 9; the working medium precooler 4 third interface connection first heat pump compressor 9 one end, the first heat pump compressor 9 other end connects the first interface of intermediate energy exchanger 13, the first refrigerant choke valve 8 one end of intermediate energy exchanger 13 second interface connection, the working medium precooler 4 fourth interface is connected to the first refrigerant choke valve 8 other end, the second refrigerant circulation pipeline 15 still includes: a second heat pump compressor 12 and a second refrigerant throttle 14; the third interface of the intermediate energy exchanger 13 is connected with one end of the second heat pump compressor 12, the other end of the second heat pump compressor 12 is connected with the third interface of the working medium preheater 11, the fourth interface of the working medium preheater 11 is connected with one end of the second refrigerant throttling valve 14, and the other end of the second refrigerant throttling valve 14 is connected with the fourth interface of the intermediate energy exchanger 13. A first refrigerant is disposed in the first refrigerant cycle line 1, the first refrigerant circulates through the first refrigerant cycle line 1, a second refrigerant is disposed in the second refrigerant cycle line 15, the second refrigerant circulates through the second refrigerant cycle line 15, the first refrigerant includes ammonia and R600a, and the second refrigerant includes water and R1233zd (E).
The first refrigerant circulating pipeline is set as a low-temperature stage refrigerant circulating pipeline, and the second refrigerant circulating pipeline is set as a high-temperature stage refrigerant circulating pipeline. The low-temperature stage refrigerant circulating pipeline mainly changes low-grade waste heat in the generator set into high-grade heat energy, and the high-temperature stage refrigerant circulating pipeline absorbs the high-grade heat pump again to change the high-grade heat energy into heat energy with higher temperature and transmits the heat energy to the carbon dioxide working medium. The heat absorption temperature of the low-temperature stage refrigerant circulating pipeline can be 50 ℃, the water outlet temperature can be 100 ℃, the air suction temperature of the corresponding high-temperature stage refrigerant circulating pipeline can be 100 ℃, and the water outlet temperature is more than 150 ℃.
A working method of an energy recovery device combining a generator set and a polymerization heat pump comprises the following steps:
step S1, a carbon dioxide working medium enters a working medium compressor 5 after exchanging heat with a first refrigerant through a working medium precooler 4, the carbon dioxide working medium is heated again through an energy recoverer 10 after being compressed to a high-pressure high-temperature state, the carbon dioxide working medium enters a working medium preheater 11 for preheating, the carbon dioxide working medium enters a working medium heater 7 and enters a turbine 6 after being heated by a heating pipeline 3, the carbon dioxide working medium is changed into low-temperature and low-pressure after generating electricity in the turbine 6, and the carbon dioxide working medium enters the working medium precooler 4 again after exchanging heat in the energy recoverer 10; step S2, compressing the first refrigerant to high temperature and high pressure through a first heat pump compressor 9 after the first refrigerant is heated by heat exchange, transferring heat to a second refrigerant through an intermediate energy exchanger 13, cooling the first refrigerant and reducing the temperature and pressure through a first refrigerant throttle valve 8, and passing the first refrigerant through a working medium precooler 4 again; step S3, the second refrigerant is heated in the intermediate energy exchanger 13 and then is pressurized through the second heat pump compressor 12, the second refrigerant enters the working medium preheater 11 to transfer heat to the carbon dioxide working medium, the second refrigerant is cooled and then is cooled and depressurized through the second refrigerant throttle valve 14, and the second refrigerant enters the intermediate energy exchanger 13 again; step S4, repeat the above steps S1 to S3.
Example 2
Example 2 is a preferred example of example 1.
The invention comprises the following steps: a supercritical industrial carbon dioxide Brayton cycle generator set and a compression type polymerization heat pump; the supercritical carbon dioxide brayton cycle power generation unit system is a working medium circulation pipeline 2, and mainly comprises: the system comprises a working medium precooler 4, a working medium compressor 5, a turbine 6, a working medium heater 7, an energy recoverer 10 and a working medium preheater 11; the working medium precooler 4 is connected with the outlet of the first refrigerant throttle valve 8 and the first heat pump compressor 9, all the parts are connected through pipelines, and the working medium preheater 11 is connected with the outlet of the second heat pump compressor 12 and the inlet of the second refrigerant throttle valve 14; the working medium of the supercritical industrial carbon dioxide Brayton cycle generator set is a carbon dioxide working medium. The compression type polymerization heat pump is formed by overlapping a first refrigerant circulating pipeline 1 and a second refrigerant circulating pipeline 15, and comprises: the system comprises a first heat pump compressor 9, an intermediate energy exchanger 13, a first refrigerant throttling valve 8, a working medium precooler 4, a second heat pump compressor 12, a working medium preheater 11 and a second refrigerant throttling valve 14, wherein all the parts are connected through pipelines, and a supercritical working carbon dioxide Brayton cycle generator set is connected with a polymerization compression type heat pump through the working medium precooler 4 and the working medium preheater 11. The first refrigerant absorbs heat from the carbon dioxide working fluid while it is cooled in the working fluid precooler 4. The second refrigerant gives off heat in the component while the carbon dioxide working medium is heated in the working medium preheater 11.
Description of the system workflow:
when the system integrally operates, working media in the supercritical working carbon dioxide Brayton cycle generator set exchange heat with a first refrigerant through the precooler 4, enter the working medium compressor 5 at a low temperature, are compressed to a high-pressure high-temperature state, and then sequentially enter the energy recoverer 10 to be heated again. And then the carbon dioxide working medium is preheated by a second refrigerant in the working medium preheater 11, and the carbon dioxide working medium enters the turbine 6 for power generation after being heated by the working medium heater 7. The carbon dioxide working medium which is changed into low pressure and low temperature in the turbine 6 enters the energy recoverer 10 and heats the carbon dioxide working medium discharged from the outlet of the working medium compressor 5, and then enters the working medium precooler 4 to repeat the cycle. In the compression type polymerization heat pump unit, a first refrigerant is heated in a working medium precooler 4, and enters an intermediate energy exchanger 13 after being compressed to high temperature and high pressure by a first heat pump compressor 9, so that heat is transferred to a second refrigerant. The first refrigerant after temperature reduction enters a first refrigerant throttle valve 8 to reduce temperature and pressure, and then enters a first heat pump compressor 9 again, and the cycle is repeated. The second refrigerant is first heated in the intermediate energy exchanger 13 and then enters the second heat pump compressor 12 to be compressed, and the compressed second refrigerant transfers heat to the carbon dioxide working medium in the working medium preheater 11. The cooled second refrigerant then enters the second refrigerant throttling valve 14 to be cooled and depressurized, and then enters the intermediate energy exchanger 13 and the second heat pump compressor 12 in sequence, and the cycle is repeated.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. An energy recovery device with a generator set combined with a polymer heat pump, comprising: the system comprises a first refrigerant circulating pipeline (1), a working medium circulating pipeline (2), a heating pipeline (3) and a second refrigerant circulating pipeline (15);
the working medium circulation pipeline (2) is provided with a working medium precooler (4), a working medium heater (7) and a working medium preheater (11);
the first refrigerant circulating pipeline (1) is connected with the working medium precooler (4), the heating pipeline (3) is connected with the working medium heater (7), and the second refrigerant circulating pipeline (15) is connected with the working medium preheater (11);
an intermediate energy exchanger (13) is arranged between the first refrigerant circulation line (1) and the second refrigerant circulation line (15).
2. The energy recovery device of the generator set combined with the polymer heat pump according to claim 1, wherein the working fluid circulation line (2) further comprises: the device comprises a working medium compressor (5), a turbine (6) and an energy recoverer (10);
a first interface of the working medium precooler (4) is connected with one end of the working medium compressor (5);
the other end of the working medium compressor (5) is connected with a first interface of the energy recoverer (10);
the second interface of the energy recoverer (10) is connected with the first interface of the working medium preheater (11);
the second interface of the working medium preheater (11) is connected with the first interface of the working medium heater (7);
the second interface of the working medium heater (7) is connected with one end of the turbine (6);
the other end of the turbine (6) is connected with a third interface of the energy recoverer (10);
and the fourth interface of the energy recoverer (10) is connected with the second interface of the working medium precooler (4).
3. The energy recovery device of the power plant in combination with a polymeric heat pump according to claim 2, characterized in that said first refrigerant circulation circuit (1) further comprises: a first refrigerant throttle (8) and a first heat pump compressor (9);
the third interface of the working medium precooler (4) is connected with one end of the first heat pump compressor (9);
the other end of the first heat pump compressor (9) is connected with a first interface of the intermediate energy exchanger (13);
the second interface of the intermediate energy exchanger (13) is connected with one end of the first refrigerant throttling valve (8);
the other end of the first refrigerant throttling valve (8) is connected with a fourth interface of the working medium precooler (4).
4. The energy recovery device of claim 3 in combination with a polymeric heat pump, wherein said second refrigerant circulation circuit (15) further comprises: a second heat pump compressor (12) and a second refrigerant throttle (14);
the third interface of the intermediate energy exchanger (13) is connected with one end of the second heat pump compressor (12);
the other end of the second heat pump compressor (12) is connected with a third interface of the working medium preheater (11);
a fourth interface of the working medium preheater (11) is connected with one end of the second refrigerant throttle valve (14);
the other end of the second refrigerant throttling valve (14) is connected with a fourth interface of the intermediate energy exchanger (13).
5. The energy recovery device of claim 4 in combination with a polymeric heat pump, wherein: working media are arranged in the working medium circulation pipeline (2).
6. The energy recovery device of claim 5 in combination with a polymeric heat pump, wherein: a first refrigerant is arranged in the first refrigerant circulation line (1), and the first refrigerant circulates in the first refrigerant circulation line (1);
a second refrigerant is provided in the second refrigerant circulation line (15), and the second refrigerant circulates in the second refrigerant circulation line (15).
7. The energy recovery device of claim 6 in combination with a polymeric heat pump, wherein: the working medium comprises carbon dioxide;
the first refrigerant comprises ammonia and R600a, and the second refrigerant comprises water and R1233zd (E).
8. A method of operating an energy recovery device in combination with a polymeric heat pump and a generator set according to claim 7, comprising the steps of:
step S1, the carbon dioxide working medium enters the working medium compressor (5) after exchanging heat with the first refrigerant through the working medium precooler (4), the carbon dioxide working medium is compressed to a high-pressure high-temperature state and then is heated again through the energy recoverer (10), the carbon dioxide working medium enters the working medium preheater (11) for preheating, the carbon dioxide working medium enters the working medium heater (7) and enters the turbine (6) after being heated by the heating pipeline (3), the carbon dioxide working medium is changed into low-temperature low-pressure after generating electricity in the turbine (6), and the carbon dioxide working medium enters the energy recoverer (10) for exchanging heat and then enters the working medium precooler (4) again;
step S2, compressing the first refrigerant to high temperature and high pressure by the first heat pump compressor (9) after heat exchange and heating, transferring heat to the second refrigerant by the first refrigerant through the intermediate energy exchanger (13), cooling the first refrigerant, reducing the temperature and pressure by the first refrigerant throttle valve (8), and passing the first refrigerant through the working medium precooler (4) again;
step S3, the second refrigerant is heated in the intermediate energy exchanger (13) and then is pressurized through the second heat pump compressor (12), the second refrigerant enters the working medium preheater (11) to transfer heat to the carbon dioxide working medium, the second refrigerant is cooled and then is cooled and depressurized through the second refrigerant throttling valve (14), and the second refrigerant enters the intermediate energy exchanger (13) again;
step S4, repeat the above steps S1 to S3.
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| US20180195417A1 (en) * | 2015-05-08 | 2018-07-12 | Korea Institute Of Energy Research | Power generation system using ejector refrigeration cycle |
| CN109826685A (en) * | 2019-03-12 | 2019-05-31 | 上海发电设备成套设计研究院有限责任公司 | A kind of supercritical carbon dioxide coal circulation burning electricity generation system and method |
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2021
- 2021-07-22 CN CN202110830906.6A patent/CN113586183A/en active Pending
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| US20130227979A1 (en) * | 2010-11-04 | 2013-09-05 | Junichiro Kasuka | Heat Pump Type Air-Warming Device |
| WO2012176258A1 (en) * | 2011-06-20 | 2012-12-27 | 熱技術開発株式会社 | Carbon dioxide supply/recovery apparatus for supercritical carbon dioxide gas turbine and method for regulating amount of carbon dioxide introduced |
| EP2908072A1 (en) * | 2014-02-17 | 2015-08-19 | Fujitsu General Limited | Heat pump-type heating and hot-water supply apparatus |
| US20180195417A1 (en) * | 2015-05-08 | 2018-07-12 | Korea Institute Of Energy Research | Power generation system using ejector refrigeration cycle |
| CN109826685A (en) * | 2019-03-12 | 2019-05-31 | 上海发电设备成套设计研究院有限责任公司 | A kind of supercritical carbon dioxide coal circulation burning electricity generation system and method |
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