CN110080842A - A kind of closed cycle electricity generation system of integrated absorption heat pump - Google Patents
A kind of closed cycle electricity generation system of integrated absorption heat pump Download PDFInfo
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- CN110080842A CN110080842A CN201910381818.5A CN201910381818A CN110080842A CN 110080842 A CN110080842 A CN 110080842A CN 201910381818 A CN201910381818 A CN 201910381818A CN 110080842 A CN110080842 A CN 110080842A
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- temperature side
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- absorption heat
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Classifications
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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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- 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
- 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
- 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
- F25B30/04—Heat pumps of the sorption type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a kind of closed cycle electricity generation systems of integrated absorption heat pump, it is related to power cycle technical field, specially a kind of closed cycle electricity generation system of integrated absorption heat pump, including supercritical carbon dioxide circulation and absorption heat pump, the supercritical carbon dioxide circulation includes compressor, compressor outlet is separately connected the side-entrance of cryogenic regenerator high pressure and the absorber low temperature side-entrance of absorption heat pump, the condenser low temperature side-entrance of the absorber low temperature side outlet connection absorption heat pump of absorption heat pump.The closed cycle electricity generation system of the integrated absorption heat pump, by absorption heat pump by supercritical carbon dioxide circulation release waste heat be changed into high-grade heat be supplied to supercritical carbon dioxide circulation be used, to improve the generating efficiency of system, and use simple backheat mode, system structure is simpler, controls eased, it can be achieved that high low-grade heat source collocation uses, the cost of heat source can be reduced, cogeneration is convenient for.
Description
Technical field
The present invention relates to power cycle technical field, the closed cycle of specially a kind of integrated absorption heat pump, which generates electricity, is
System.
Background technique
In recent years, supercritical carbon dioxide circulation becomes hot spot, and is considered to have many potential advantages, carbon dioxide
Critical point be 31 DEG C/7.4MPa, state in temperature and pressure postcritical is above-critical state, carbon dioxide chemistry
Matter is stable, density is high, non-toxic, low cost, the circulatory system is simple, it is compact-sized, high-efficient, can be air-cooled, overcritical titanium dioxide
Carbon cycle can be considered with various combinations of sources of heat at electricity generation system in thermal power generation, nuclear energy power generation, solar energy thermal-power-generating, remaining
The fields such as hot power generation, geothermal power generation, biomass power generation all have good application prospect, in simple extraction cycle arrangement
On the basis of, the mode for shunting and recompressing can be used and construct the supercritical carbon dioxide circulation of complex form, to improve circulation effect
Rate shunts recompression supercritical carbon dioxide and circulates in cycle efficieny aspect most advantage, but working medium enters the temperature of heat source
Excessively high, this results in heat source can lose to working medium input heat link, and especially sensible heat heat source, low-temperature zone heat are difficult to
To effective use.
In supercritical carbon dioxide circulation, compressor outlet working medium has the characteristics that big specific heat, and temperature is lower, can
To provide a part of heat using low-grade heat source, absorption heat pump can use in grade heat source as driving, absorb ring
Border heat generates more middle-low grade heats, has the function of increasing heat, absorption heat pump can be used for overcritical titanium dioxide
Carbon cycle is expected to the defect for solving to shunt recompression circulation.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of closed cycle electricity generation system of integrated absorption heat pump,
Solve mentioned above in the background art in supercritical carbon dioxide circulation, spy of the compressor outlet working medium with big specific heat
Point, and temperature is lower can use low-grade heat source and provide a part of heat, absorption heat pump can use in grade heat
Source absorbs amount of heat, generates more middle-low grade heats as driving, has the function of increasing heat, absorption heat pump
It can be used for supercritical carbon dioxide circulation, be expected to solve to shunt recompression circulatory problems.
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of integrated absorption heat pump closes
Formula cycle generating system, including supercritical carbon dioxide circulation and absorption heat pump, the supercritical carbon dioxide circulation include
Compressor, compressor outlet are separately connected the side-entrance of cryogenic regenerator high pressure and the absorber low temperature side-entrance of absorption heat pump,
The condenser low temperature side-entrance of the absorber low temperature side outlet connection absorption heat pump of absorption heat pump, the condensation of absorption heat pump
Device low temperature side outlet connects the side-entrance of auxiliary thermal source low temperature, and cryogenic regenerator high pressure side outlet and auxiliary thermal source low temperature side outlet are equal
The high pressure side-entrance of high temperature regenerator is connected, high temperature regenerator high pressure side outlet connects the side-entrance of main heat source low temperature, main heat source low temperature
Side outlet connects turbine import, turbine outlet connection high temperature regenerator low pressure side-entrance, the connection of high temperature regenerator low side outlets
Cryogenic regenerator low pressure side-entrance, cryogenic regenerator low side outlets connect the evaporator high temperature side-entrance of absorption heat pump, inhale
The evaporator high temperature side outlet of receipts formula heat pump connects the side-entrance of forecooler high temperature, forecooler high temperature side outlet connect compressor into
Mouthful.
Optionally, the working medium of the absorption heat pump is to for lithium bromide water solution, (water is refrigerant, and lithium bromide is to absorb
Agent) it include generator and generator heat source, generator refrigerant outlet connects the side-entrance of condenser high temperature, and condenser high temperature side goes out
Mouth connection throttle valve import, throttling valve outlet connect the side-entrance of evaporator low temperature, and evaporator low temperature side outlet connects absorber system
Cryogen import.
Optionally, the absorber taphole connects solution pump inlet, and solution pump discharge connects solution heat exchanger low temperature
Side-entrance, solution heat exchanger low temperature side outlet connect generator solution inlet port, and it is high that generator taphole connects solution heat exchanger
Warm side-entrance, solution heat exchanger high temperature side outlet connect pressure reducing valve import, and decompression valve outlet connects absorber solution inlet port.
Optionally, coaxially arranged between the compressor and turbine and generator.
The present invention provides a kind of closed cycle electricity generation system of integrated absorption heat pump, have it is following the utility model has the advantages that
1, it is recycled using the supercritical carbon dioxide of simple backheat mode, system structure is simpler, controls eased；
2, high low-grade heat source collocation can be achieved to use, the cost of heat source can be reduced, it is very high especially for cost
Heat source (such as: solar light-condensing and heat-collecting device), can be greatly reduced investment using low-grade heat source；
3, it is convenient for cogeneration, absorption heat pump load regulation range is big, and the heat of output is suitble to external heat supply, runs on
When cogeneration mode, the thermal efficiency of system can reach 95% or more.
Detailed description of the invention
Fig. 1 is the closed cycle electricity generation system flow diagram of the integrated absorption heat pump of the present invention.
In figure: 1, compressor；2, cryogenic regenerator；3, high temperature regenerator；41, main heat source；42, auxiliary thermal source；43, occur
Device heat source；5, turbine；6, generator；7, forecooler；8, generator；9, condenser；10, throttle valve；11, evaporator；12, it absorbs
Device；13, solution pump；14, solution heat exchanger；15, pressure reducing valve；100, supercritical carbon dioxide recycles；200, absorption heat pump.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term " on ",
The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of closed cycle power generation system of integrated absorption heat pump
System, including supercritical carbon dioxide circulation 100 and absorption heat pump 200, supercritical carbon dioxide circulation 100 include compressor 1,
Compressor 1 exports the absorber low temperature side-entrance for being separately connected 2 high pressure side-entrance of cryogenic regenerator and absorption heat pump 200, inhales
The condenser low temperature side-entrance of the absorber low temperature side outlet connection absorption heat pump 200 of receipts formula heat pump 200, absorption heat pump
Condenser low temperature side outlet connects 42 low temperature side-entrance of auxiliary thermal source, and 2 high pressure side outlet of cryogenic regenerator is low with auxiliary thermal source 42
Warm side outlet is all connected with the 3 high pressure side-entrance of high temperature regenerator, 3 high pressure side outlet of high temperature regenerator connect 41 low temperature side of main heat source into
Mouthful, 41 low temperature side outlet of main heat source connects 5 import of turbine, the outlet of turbine 5 connection 3 low pressure side-entrance of high temperature regenerator, and high temperature returns
Hot 3 low side outlets of device connect 2 low pressure side-entrance of cryogenic regenerator, and 2 low side outlets of cryogenic regenerator connect absorption heat pump
200 11 high temperature side-entrance of evaporator, the 11 high temperature side outlet of evaporator of absorption heat pump 200 connect 7 high temperature side of forecooler into
Mouthful, 7 high temperature side outlet connect compressor of forecooler, 1 import；
The working medium of absorption heat pump 200 includes hair to for lithium bromide water solution (water is refrigerant, and lithium bromide is absorbent)
Raw device 8 and generator heat source 43,8 refrigerant outlet of generator connect 9 high temperature side-entrance of condenser, 9 high temperature side outlet of condenser
10 import of throttle valve, the outlet of throttle valve 10 connection 11 low temperature side-entrance of evaporator are connected, the connection of 11 low temperature side outlet of evaporator is inhaled
Receive 12 refrigerant inlet of device；
12 taphole of absorber connect 13 import of solution pump, solution pump 13 outlet connection 14 low temperature side of solution heat exchanger into
Mouthful, 14 low temperature side outlet of solution heat exchanger connects 8 solution inlet port of generator, and 8 taphole of generator connects solution heat exchanger 14
High temperature side-entrance, 14 high temperature side outlet of solution heat exchanger connect 15 import of pressure reducing valve, and connection absorber 12 in the outlet of pressure reducing valve 15 is molten
Liquid import, it is coaxially arranged between compressor 1 and turbine 5 and generator 6；
To sum up, the closed cycle electricity generation system of the integrated absorption heat pump, for being applied to light collection solar power generation,
Using tower light and heat collection system as main heat source 41, the heat higher than 560 DEG C is provided by heat transfer medium (such as: fused salt), is adopted
It uses slot light collection collecting system as generator heat source 43 and auxiliary thermal source 42, is provided by heat transfer medium (such as: conduction oil) high
In 380 DEG C of heat；
In supercritical carbon dioxide circulation 100, carbon dioxide working medium is introduced into compressor 1 and is pressurized to 20MPa, main compression
The carbon dioxide working medium that machine 1 exports divides two-way: absorbing the low-temperature zone heat that working medium is discharged in turbine 5 through cryogenic regenerator 2 all the way, separately
The absorber 12 through absorption heat pump 200, the absorption heat of condenser 9 are warming up to 150 DEG C, then are heated to through auxiliary thermal source 42 all the way
200℃；Then two-way, which converges into high temperature regenerator 3, absorbs the high temperature section heat that working medium is discharged in turbine 5, and high temperature regenerator 3 goes out
The working medium come absorbs heat through main heat source 41 and is warming up to 550 DEG C, enters back into 5 expansion work of turbine, 5 pushing generator 6 of turbine, thoroughly
The working medium of flat 5 discharge is successively through high temperature regenerator 3,2 recovery section waste heat of cryogenic regenerator, then through absorption heat pump 200
Evaporator 11 recycles low-grade exhaust heat, then the cooling of pre-cooled device 7, eventually passes back to 1 import of compressor；
At the same time, in absorption heat pump 200, the working medium pair of 43 heating generator 8 of generator heat source steams refrigerant
Hair, meanwhile, remaining concentrated solution enters pressure reducing valve 15 after solution heat exchanger 14 is cooling, enters back into absorber 12；Refrigerant steams
Vapour, which enters the liquefaction of condenser 9 and discharges heat, is transmitted to carbon dioxide working medium, and refrigerant enters through 10 throttling expansion of throttle valve low again
In the evaporator 11 of pressure, gasify after the low-grade exhaust heat of refrigerant suction carbon dioxide working medium, enters back into absorber 12 by solution
It absorbs, absorption process release heat is transmitted to carbon dioxide working medium, and the solution in absorber 12 inputs solution by solution pump 13 again and changes
Hot device 14 preheats, and eventually passes back in generator 8.
In the above process, slot light collection collecting system drives absorption heat pump 200 to work as generator heat source 43, will
A part of waste heat of 2 high temperature side of cryogenic regenerator discharge is changed into high-grade heat and exports carbon dioxide work for compressor 1
The heating of matter in this way improves the generating efficiency of system.Meanwhile the cost of slot light collection collecting system is lower, can make entirely too
The cost of electricity-generating of positive energy heat generating system is more excellent.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of closed cycle electricity generation system of integrated absorption heat pump, including supercritical carbon dioxide circulation (100) and absorption
Formula heat pump (200), it is characterised in that: the supercritical carbon dioxide circulation (100) includes compressor (1), compressor (1) outlet
It is separately connected cryogenic regenerator (2) high pressure side-entrance and the absorber low temperature side-entrance of absorption heat pump (200), absorption heat pump
(200) the condenser low temperature side-entrance of absorber low temperature side outlet connection absorption heat pump (200), absorption heat pump (200)
Condenser low temperature side outlet connect auxiliary thermal source (42) low temperature side-entrance, cryogenic regenerator (2) high pressure side outlet and auxiliary heat
Source (42) low temperature side outlet is all connected with high temperature regenerator (3) high pressure side-entrance, and high temperature regenerator (3) high pressure side outlet connects main heat
Source (41) low temperature side-entrance, main heat source (41) low temperature side outlet connect turbine (5) import, turbine (5) outlet connection high temperature backheat
Device (3) low pressure side-entrance, high temperature regenerator (3) low side outlets connect cryogenic regenerator (2) low pressure side-entrance, cryogenic regenerator
(2) evaporator (11) high temperature side-entrance of low side outlets connection absorption heat pump (200), the evaporation of absorption heat pump (200)
Device (11) high temperature side outlet connects forecooler (7) high temperature side-entrance, forecooler (7) high temperature side outlet connect compressor (1) import.
2. a kind of closed cycle electricity generation system of integrated absorption heat pump according to claim 1, it is characterised in that: described
The working medium of absorption heat pump (200) is to including generator (8) for lithium bromide water solution (water is refrigerant, and lithium bromide is absorbent)
With generator heat source (43), generator (8) refrigerant outlet connects condenser (9) high temperature side-entrance, and condenser (9) high temperature side goes out
Mouth connection throttle valve (10) import, throttle valve (10) outlet connection evaporator (11) low temperature side-entrance, evaporator (11) low temperature side
Outlet connection absorber (12) refrigerant inlet, absorber (12) taphole connect solution pump (13) import, solution pump (13)
Outlet connection solution heat exchanger (14) low temperature side-entrance, solution heat exchanger (14) low temperature side outlet connect generator (8) solution into
Mouthful, generator (8) taphole connects solution heat exchanger (14) high temperature side-entrance, the connection of solution heat exchanger (14) high temperature side outlet
Pressure reducing valve (15) import, pressure reducing valve (15) outlet connection absorber (12) solution inlet port.
3. a kind of closed cycle electricity generation system of integrated absorption heat pump according to claim 1, it is characterised in that: described
Absorber (12) taphole connect solution pump (13) import, solution pump (13) outlet connection solution heat exchanger (14) low temperature side into
Mouthful, solution heat exchanger (14) low temperature side outlet connects generator (8) solution inlet port, and generator (8) taphole connection solution changes
Hot device (14) high temperature side-entrance, solution heat exchanger (14) high temperature side outlet connect pressure reducing valve (15) import, pressure reducing valve (15) outlet
Connect absorber (12) solution inlet port.
4. a kind of closed cycle electricity generation system of integrated absorption heat pump according to claim 1, it is characterised in that: described
It is coaxially arranged between compressor (1) and turbine (5) and generator (6).
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| CN201910381818.5A CN110080842A (en) | 2019-05-08 | 2019-05-08 | A kind of closed cycle electricity generation system of integrated absorption heat pump |
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| CN201910381818.5A CN110080842A (en) | 2019-05-08 | 2019-05-08 | A kind of closed cycle electricity generation system of integrated absorption heat pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153475A (en) * | 2021-05-26 | 2021-07-23 | 山东理工大学 | Power-heat complementary supercritical CO2Power cycle power generation system |
| CN114165305A (en) * | 2021-11-30 | 2022-03-11 | 华能营口热电有限责任公司 | Power generation and heat supply system for gradient utilization of industrial waste heat and working method thereof |
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| CN210013728U (en) * | 2019-05-08 | 2020-02-04 | 上海发电设备成套设计研究院有限责任公司 | Closed circulation power generation system of integrated absorption heat pump |
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2019
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| JP2004116806A (en) * | 2002-09-24 | 2004-04-15 | Rinnai Corp | Hybrid air-conditioning machine |
| CN107178436A (en) * | 2017-02-28 | 2017-09-19 | 上海发电设备成套设计研究院 | A kind of cold, heat and power triple supply system and method |
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