CN108661731A - A kind of overcritical Brayton cycle electricity generation system and method with cold-storage - Google Patents
A kind of overcritical Brayton cycle electricity generation system and method with cold-storage Download PDFInfo
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- CN108661731A CN108661731A CN201810723897.9A CN201810723897A CN108661731A CN 108661731 A CN108661731 A CN 108661731A CN 201810723897 A CN201810723897 A CN 201810723897A CN 108661731 A CN108661731 A CN 108661731A
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- 230000005611 electricity Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 238000009825 accumulation Methods 0.000 claims abstract description 13
- 239000002826 coolant Substances 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000009102 absorption Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000000422 nocturnal effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
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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
- F01K13/00—General layout or general methods of operation of complete plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/02—Devices for producing mechanical power from solar energy using a single state working fluid
- F03G6/04—Devices for producing mechanical power from solar energy using a single state working fluid gaseous
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of overcritical Brayton cycle electricity generation system and method with cold-storage, which includes the heat source being sequentially communicated, overcritical Brayton Cycle system, cold accumulation system and cooling system；The present invention can be with effective solution therrmodynamic system summer day environment temperature when higher by cold accumulation system and adjusting method heat dissipation problem, ensure system cold junction temperature, the safeguards system thermal efficiency.
Description
Technical field
The present invention relates to a kind of electricity generation systems, and in particular to a kind of overcritical Brayton cycle electricity generation system with cold-storage and
Method.
Background technology
Under the overall background of energy shortage and environmental crisis, the attention that energy utilization rate is increasingly subject to people is improved.At present
In numerous thermodynamic cycles, overcritical Brayton cycle is a kind of most advantageous circulation form.Novel supercritical working medium (two
Carbonoxide, helium and nitrous oxide etc.) have energy density big, heat transfer efficiency is high, the innate advantages such as simple system, Ke Yi great
Width improves heat to power output efficiency, reduces equipment volume, has very high economy.
But there is also an apparent technological difficulties for this kind of cycle, i.e., cooling problem.Supercritical steam cycle, especially as dioxy
Change supercritical steam cycle as carbon, critical-temperature is close to environment temperature, its compression power consumption is smaller when cold junction temperature is relatively low, heat
Efficiency is very high.But it is very sensitive to cold junction temperature, will decline to a great extent slightly exceeding its thermal efficiency after design cold junction temperature.Cause
This, cold junction temperature, i.e. compressor inlet temperature must control with high accuracy.But when coming summer, Chinese quite big
Area be difficult the cold junction temperature being cooled to needed for it, this will largely effect on its efficiency, and then influence the popularization of this technology.
But this problem is not without simple solution.The sizable area of Central and Western China is to belong to wide people
It is dilute, the defeated major area in energy abundance area, either fossil energy or solar energy all very abundants and energy east.These
Although regional summer day temperature can be very high, the temperature difference is generally very big, even if in summer, nighttime temperature is also very low.Cause
This can cool down the heat of required discharge at night, and by this part cold storage, wait until to go daytime cooling is super to face again
Boundary connects cycle cold end working medium.
Chu Leng also belongs to one kind of energy storage, and therrmodynamic system energy storage is commonly used in photo-thermal solar energy, feasibility
It is fully verified already.And supercritical steam cycle stores up cold technology and requires to be far below photo-thermal solar energy heat-storage, required medium is
For the media such as cheap water (being closed cycle water, need not consume)；Storage temperature is very low, and is intended to radiate to it, therefore nothing
It need to consider to keep the temperature；Cold storage capacity certainly less than same size electricity generation system amount of stored heat because the thermodynamic equilibrium of therrmodynamic system is substantially
For：High temperature heat source inputs heat=generated energy+low-temperature heat source heat dissipation capacity, therefore inevitable for the cold storage capacity that low-temperature heat source heat dissipation stores
Less than to high temperature heat source input and store amount of stored heat, and due to be when Brayton cycle cold end radiate alternating temperature radiate, rather than
Between the constant temperature of Rankine cycle radiates, therefore cool storage medium has certain temperature lift-off, storage capacity can receive.Therefore the feasibility of this technology
Without querying.
Invention content
It is an object of the invention to solve the cold end heat dissipation problem of overcritical Brayton cycle electricity generation system summer, it is proposed that
A kind of overcritical Brayton cycle electricity generation system and method with cold-storage, use that technical difficulty is relatively low, and feasibility is higher
Method, improve system thermal efficiency.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of overcritical Brayton cycle electricity generation system with cold-storage, including be sequentially communicated heat source 1, overcritical mine-laying
Pause the circulatory system 4, cold accumulation system 2 and cooling system 3.
The overcritical Brayton Cycle system 4 includes turbine 4-1, high temperature regenerator 4-2, cryogenic regenerator 4-3, precooling
Device 4-4, main compressor 4-5 and recompression machine 4-6；The entrance of turbine 4-1 is connected with 1 working medium side outlet of heat source, turbine 4-1's
Outlet is connected with the heat release side entrance of high temperature regenerator 4-2, heat release side outlet and the cryogenic regenerator 4- of high temperature regenerator 4-2
3 heat release side entrances are connected, and the cold side outlet manifold of cryogenic regenerator 4-3 is two-way, is entered all the way with forecooler 4-4 working medium sides
Mouthful be connected, the working medium side outlet of forecooler 4-4 is connected with the entrance of main compressor 4-5, the outlet of main compressor 4-5 with it is low
Warm regenerator 4-3 heat absorptions side entrance is connected, the another way and recompression that cryogenic regenerator 4-3 cold side outlet manifolds come out
Machine 4-6 entrances are connected, and the outlets recompression machine 4-6 converge rear and high temperature backheat with cryogenic regenerator 4-3 heat absorptions side outlet working medium
Device 4-2 heat absorptions side entrance is connected, and high temperature regenerator 4-2 heat absorption side outlets are connected with 1 entrance of heat source.
The cooling system 3 is cooling tower；The cold accumulation system includes high temperature storage tank 2-1 and low-temperature storage tank 2-2, high temperature storage
The entrance of tank 2-1 is connected with forecooler 4-4 cold side outlet ports, and the outlet of high temperature storage tank 2-1 is connected with cooling tower entrance, low temperature
The outlet of storage tank 2-2 is connected with forecooler 4-4 cold side input ports, and the entrance of low-temperature storage tank 2-2 is connected with cooling tower outlet.
The heat source 1 is boiler, afterheat heat exchanger or solar energy.
The working method of the overcritical Brayton cycle electricity generation system with cold-storage, summer environment temperature reach compared with
When high-temperature, daytime first uses the cooling medium stored in cold accumulation system 2 to cool down the precooling in overcritical Brayton Cycle system
The working medium of device, the cooling medium after temperature is increased are stored in high temperature storage tank 2-1；When to night, after temperature is increased
Cooling medium is passed through the cooling of cooling system 3 from high temperature storage tank 2-1, and nocturnal temperature is relatively low, capable that these coolings are situated between
Matter is cooled to required cold junction temperature, if overcritical Brayton cycle electricity generation system still persistently generates electricity at night, cooling system
System 3 can also cool down the newly generated High-temperature cooling medium of thermodynamic cycle, and a large amount of sub-cooleds after cooling are situated between
Matter is stored in low-temperature storage tank 2-2, so that second day daytime used；In overcritical Brayton Cycle system 4, by heat source 1
Overcritical working medium after heating enters turbine systems 4-1 actings, and the high-temperature low-pressure steam exhaust after acting sequentially enters high temperature regenerator
The cold side heat release of 4-2, cryogenic regenerator 4-3, the overcritical working medium of low-temp low-pressure after heat release enter back into forecooler 4-4 working medium sides
Cooled, the overcritical working medium after being cooled is divided into two-way, enters compressor 4-5 all the way, after supercharged in compressor 4-5
High-pressure supercritical working medium enters the heat absorption of cryogenic regenerator 4-3 heat absorbing sides, is come out from cryogenic regenerator 4-3 cold side outlet manifolds
The overcritical working medium in second tunnel is directly entered recompression machine 4-6 and is compressed, later with from the first via after cryogenic regenerator 4-3 heat absorption
Overcritical working medium enters high temperature regenerator 4-2 heat absorbing sides after converging, and is entered back into heat source 1 after absorbing heat in high temperature regenerator 4-2
It is heated, completes entire overcritical working medium circulation flow.Cooling medium for cooling down working medium in forecooler 4-4 comes from low
Low-temperature cooling media in warm storage tank in 2-2, the cooling medium after heating up enter among high temperature storage tank 2-1.
Compared to the prior art compared with, the invention has the advantages that：
A kind of overcritical Brayton cycle electricity generation system and method with cold-storage, can be with effective solution heating power system
Heat dissipation problem when summer day environment temperature of uniting is higher ensures system cold junction temperature, the safeguards system thermal efficiency.
All without cold-storage device, one of major reason is existing steam power plant using water as cycle for existing steam power plant
Medium, there are condensation process when cold end is cooled down for water, and the temperature of water is constant in condensation process, if in other words wanting to use
Similar Cool Storage Technology, the temperature difference must be very big, otherwise cannot achieve heat exchange.And the cooling temperature of overcritical Brayton cycle is
Variation, so cool storage medium only need it is more slightly lower than Temperature of Working in precooling so that the popularization of this technology has bigger
Feasibility.
After using Cool Storage Technology, overcritical Brayton cycle cold junction temperature can be safeguarded effectively, Ke Yiwen
Fixed is maintained at Near The Critical Point, and compressor power consumption is minimized, while ensureing the operation that compressor is stablized, and provides system
Flow needed for system and pressure.
After using Cool Storage Technology, overcritical Brayton cycle electricity generation system is provided with stronger adaptive capacity to environment,
Area especially larger in day and night temperature and water shortage, it is only necessary to which increasing little investment can keep whole day all to reach lower
Cold junction temperature keeps higher system thermal efficiency, improves system economy.
Description of the drawings
Fig. 1 is the structural schematic diagram of present system.
Wherein, 1 is heat source, and 2 be cold accumulation system, and 3 be cooling system, and 4 be overcritical Brayton Cycle system.Overcritical cloth
The thunder circulatory system includes：Turbine 4-1, high temperature regenerator 4-2, cryogenic regenerator 4-3, forecooler 4-4, main compressor 4-5, again
Compressor 4-6.Cold accumulation system includes：High temperature storage tank 2-1 and low-temperature storage tank 2-2.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of overcritical Brayton cycle electricity generation system with cold-storage of the present invention, including be sequentially communicated
Heat source 1, overcritical Brayton Cycle system 4, cold accumulation system 2 and cooling system 3.Overcritical Brayton cycle system therein
System 4 includes turbine 4-1, high temperature regenerator 4-2, cryogenic regenerator 4-3, forecooler 4-4, main compressor 4-5 and recompression machine 4-
6；The entrance of turbine 4-1 is connected with 1 working medium side outlet of heat source, and the outlet of turbine 4-1 and the cold side of high temperature regenerator 4-2 enter
Mouth is connected, and the heat release side outlet of high temperature regenerator 4-2 is connected with cryogenic regenerator 4-3 heat releases side entrance, cryogenic regenerator
The cold side outlet manifold of 4-3 is two-way, is connected all the way with forecooler 4-4 working medium side entrance, the working medium side of forecooler 4-4
Outlet is connected with the entrance of main compressor 4-5, and the outlet of main compressor 4-5 is connected with cryogenic regenerator 4-3 heat absorptions side entrance
Logical, the another way that cryogenic regenerator 4-3 cold side outlet manifolds come out is connected with recompression machine 4-6 entrances, recompression machine 4-6
Outlet is connected after converging with cryogenic regenerator 4-3 heat absorptions side outlet working medium with high temperature regenerator 4-2 heat absorptions side entrance, and high temperature returns
Hot device 4-2 heat absorptions side outlet is connected with 1 entrance of heat source.
Cold accumulation system 2 includes high temperature storage tank 2-1 and low-temperature storage tank 2-2, and the entrance and forecooler 4-4 of high temperature storage tank 2-1 is cold
Side outlet is connected, and the outlet of high temperature storage tank 2-1 is connected with 3 entrance of cooling tower, the outlet of low-temperature storage tank 2-2 and forecooler
4-4 cold side input ports are connected, the entrance of low-temperature storage tank 2-2 with and cooling tower 3 outlet be connected.
The specific work process of present system is：
When summer environment temperature reaches higher temperature, the cooling medium cooling stored in cold accumulation system 2 is first used daytime
The working medium of forecooler in overcritical Brayton Cycle system, the cooling medium after temperature is increased are stored in high temperature storage tank 2-1
In the middle；When to night, the cooling medium after temperature is increased is passed through cooling tower cooler from high temperature storage tank 2-1, nocturnal temperature compared with
It is low, it is capable that these cooling media are cooled to required cold junction temperature, if overcritical Brayton cycle electricity generation system
It still persistently generates electricity at night, cooling tower can also cool down the newly generated High-temperature cooling medium of thermodynamic cycle, and will
A large amount of low-temperature cooling medias after cooling are stored in low-temperature storage tank 2-2, so that second day daytime used；In overcritical mine-laying
In the circulatory system 4 of pausing, the overcritical working medium after being heated by heat source 1 enters turbine systems 4-1 actings, the high-temperature low-pressure after acting
Steam exhaust sequentially enters the cold side heat release of high temperature regenerator 4-2, cryogenic regenerator 4-3, the overcritical work of low-temp low-pressure after heat release
Matter enters back into forecooler 4-4 working medium sides and is cooled, and the overcritical working medium after being cooled is divided into two-way, enters compressor 4-5 all the way,
The heat absorption of cryogenic regenerator 4-3 heat absorbing sides is entered by High-pressure supercritical working medium after supercharged in compressor 4-5, from low temperature backheat
The overcritical working medium in the second tunnel that device 4-3 cold side outlet manifolds come out is directly entered recompression machine 4-6 and is compressed, later with from low
The overcritical working medium of the first via after warm regenerator 4-3 heat absorptions enters high temperature regenerator 4-2 heat absorbing sides after converging, in high temperature regenerator
It enters back into heat source 1 and is heated after absorbing heat in 4-2, complete entire overcritical working medium circulation flow.For cooling down in forecooler 4-4
The cooling medium of working medium, the i.e. low-temperature cooling media in 2-2 in low-temperature storage tank, the cooling medium after heating up enter high temperature
Among storage tank 2-1.
But other layouts of overcritical Brayton Cycle system 4 shown in Fig. 1 do not influence the application of the present invention, and of the invention is interior
Appearance is also suitable other layouts of supercritical steam cycle system, therefore the overcritical Brayton Cycle system 4 in the present invention is wide
Overcritical Brayton Cycle system in general meaning, and it is not limited to illustrated arrangement.Such as other overcritical Brayton cycle systems
Multistage turbine system, or the turbine systems with reheating can be used in system, can not also use shunting recompression system, i.e., only with one
Main compressor does not recompress machine, and two regenerators in figure is merged into regenerator, etc. in figure.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not limited to this hair
Bright, all within the spirit and principle of invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of overcritical Brayton cycle electricity generation system with cold-storage, which is characterized in that including be sequentially communicated heat source (1),
Overcritical Brayton Cycle system (4), cold accumulation system (2) and cooling system (3).
2. a kind of overcritical Brayton cycle electricity generation system with cold-storage according to claim 1, which is characterized in that described super
Critical Brayton Cycle system (4) includes turbine (4-1), high temperature regenerator (4-2), cryogenic regenerator (4-3), forecooler (4-
4), main compressor (4-5) and recompression machine (4-6)；The entrance of turbine (4-1) is connected with heat source (1) working medium side outlet, turbine
The outlet of (4-1) is connected with the heat release side entrance of high temperature regenerator (4-2), the heat release side outlet of high temperature regenerator (4-2) with
Cryogenic regenerator (4-3) heat release side entrance is connected, and the cold side outlet manifold of cryogenic regenerator (4-3) is two-way, all the way with
Forecooler (4-4) working medium side entrance is connected, and the working medium side outlet of forecooler (4-4) is connected with the entrance of main compressor (4-5)
Logical, the outlet of main compressor (4-5) is connected with cryogenic regenerator (4-3) heat absorption side entrance, cryogenic regenerator (4-3) cold side
The another way that outlet manifold comes out is connected with recompression machine (4-6) entrance, and recompression machine (4-6) exports and cryogenic regenerator
(4-3) heat absorption side outlet working medium is connected after converging with high temperature regenerator (4-2) heat absorption side entrance, and high temperature regenerator (4-2) is inhaled
Hot side outlet is connected with heat source (1) entrance.
3. a kind of overcritical Brayton cycle electricity generation system with cold-storage according to claim 1, which is characterized in that described
Cooling system (3) is cooling tower；The cold accumulation system includes high temperature storage tank (2-1) and low-temperature storage tank (2-2), high temperature storage tank (2-
1) entrance is connected with forecooler (4-4) cold side outlet port, and the outlet of high temperature storage tank (2-1) is connected with cooling tower entrance, low
The outlet of warm storage tank (2-2) is connected with forecooler (4-4) cold side input port, and entrance and the cooling tower of low-temperature storage tank (2-2) export
It is connected.
4. a kind of overcritical Brayton cycle electricity generation system with cold-storage according to claim 1, which is characterized in that described
Heat source (1) is boiler, afterheat heat exchanger or solar energy.
5. the working method of overcritical Brayton cycle electricity generation system of the Claims 1-4 any one of them with cold-storage, special
Sign is, when summer environment temperature reaches higher temperature, first uses the cooling medium cooling stored in cold accumulation system (2) daytime
The working medium of forecooler in overcritical Brayton Cycle system, the cooling medium after temperature is increased are stored in high temperature storage tank (2-
1) in；When to night, the cooling medium after temperature is increased is passed through cooling system (3) cooling, night from high temperature storage tank (2-1)
Between temperature it is relatively low, it is capable by these cooling media be cooled to required cold junction temperature, if overcritical Brayton cycle
Electricity generation system still persistently generates electricity at night, and cooling system (3) also can be cold by the newly generated High-temperature cooling medium of thermodynamic cycle
But get off, and a large amount of low-temperature cooling medias after cooling are stored in low-temperature storage tank (2-2), so that second day daytime made
With；In overcritical Brayton Cycle system (4), the overcritical working medium after being heated by heat source (1) enters turbine systems (4-1) and does
Work(, the high-temperature low-pressure steam exhaust after acting sequentially enter the cold side heat release of high temperature regenerator (4-2), cryogenic regenerator (4-3), put
The overcritical working medium of low-temp low-pressure after heat enters back into forecooler (4-4) working medium side and is cooled, the overcritical working medium after being cooled point
For two-way, enters compressor (4-5) all the way, cryogenic regenerator (4-3) heat absorbing side is entered by High-pressure supercritical working medium after supercharged
Heat absorption, the overcritical working medium in the second tunnel come out from cryogenic regenerator (4-3) cold side outlet manifold are directly entered recompression machine (4-
6) converge with from the overcritical working medium of the first via after the heat absorption of cryogenic regenerator (4-3) heat absorbing side after, being compressed, enter back into high temperature
Regenerator (4-2) heat absorbing side is entered back into heat source (1) after heat absorption in high temperature regenerator (4-2) and is heated, and completes entirely super face
Boundary's working medium circulation flow；For cooling down low temperature of the cooling medium of working medium in forecooler (4-4) in (2-2) in low-temperature storage tank
Cooling medium, the cooling medium after heating up enter among high temperature storage tank (2-1).
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| CN201810723897.9A CN108661731B (en) | 2018-07-04 | 2018-07-04 | Supercritical Brayton cycle power generation system with cold accumulation function and supercritical Brayton cycle power generation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520206A (en) * | 2020-05-26 | 2020-08-11 | 西安热工研究院有限公司 | Supercritical Brayton cycle bypass impurity removal system and method |
| CN111946411A (en) * | 2020-07-30 | 2020-11-17 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Supercritical carbon dioxide energy storage system for ship |
| CN112943396A (en) * | 2021-02-07 | 2021-06-11 | 西安交通大学 | Mixed working medium supercritical Brayton cycle system with adjustable working medium critical point and method |
| CN113187680A (en) * | 2021-05-27 | 2021-07-30 | 西安热工研究院有限公司 | Photovoltaic power generation system with electric heating energy storage and operation method |
| CN113187681A (en) * | 2021-05-27 | 2021-07-30 | 西安热工研究院有限公司 | Photovoltaic, photothermal, heat storage and heat management power generation system and operation method |
| CN113339091A (en) * | 2021-07-16 | 2021-09-03 | 中国科学院上海应用物理研究所 | Brayton-kalina circulating energy storage power supply method and device |
| CN114812009A (en) * | 2022-04-29 | 2022-07-29 | 西安交通大学 | Heat pump electricity storage system based on reversible recompression Brayton cycle and operation method |
| CN115234330A (en) * | 2022-08-30 | 2022-10-25 | 西安热工研究院有限公司 | Efficient and safe space nuclear power supply system and working method thereof |
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| CN111946411B (en) * | 2020-07-30 | 2023-01-03 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Supercritical carbon dioxide energy storage system for ship |
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| CN112943396A (en) * | 2021-02-07 | 2021-06-11 | 西安交通大学 | Mixed working medium supercritical Brayton cycle system with adjustable working medium critical point and method |
| CN112943396B (en) * | 2021-02-07 | 2023-06-02 | 西安交通大学 | Mixed working medium supercritical Brayton cycle system and method with adjustable working medium critical point |
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| CN113339091A (en) * | 2021-07-16 | 2021-09-03 | 中国科学院上海应用物理研究所 | Brayton-kalina circulating energy storage power supply method and device |
| CN114812009A (en) * | 2022-04-29 | 2022-07-29 | 西安交通大学 | Heat pump electricity storage system based on reversible recompression Brayton cycle and operation method |
| CN115234330A (en) * | 2022-08-30 | 2022-10-25 | 西安热工研究院有限公司 | Efficient and safe space nuclear power supply system and working method thereof |
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