CN103016152B - Supercritical air energy storage system with novel process - Google Patents

Supercritical air energy storage system with novel process Download PDF

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CN103016152B
CN103016152B CN201210518522.1A CN201210518522A CN103016152B CN 103016152 B CN103016152 B CN 103016152B CN 201210518522 A CN201210518522 A CN 201210518522A CN 103016152 B CN103016152 B CN 103016152B
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heat
air
storage
heat exchanger
described
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CN201210518522.1A
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CN103016152A (en
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许剑
陈海生
盛勇
刘金超
谭春青
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中国科学院工程热物理研究所
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/15Pressurised fluid storage
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

The invention discloses a supercritical air energy storage/release system with a novel process. The off-peak (low price) electricity of the power station is adopted by the system to compress the air to a supercritical state (simultaneously store the heat of compression), an expansion machine is utilized to cool the air, simultaneously the work of expansion is recycled to drive a first-stage compressor to improve the system efficiency, and the stored cold energy is utilized to cool, liquefy and store (store the energy) the supercritical air; at a peak of electricity consumption, the liquid air is compressed and absorbs heat to be supercritical (simultaneously recycles the cold energy), further after absorbing the compression heat or the other industrial exhaust heat, the solar energy central heating and the like, the liquid air drives the generator to generate electricity (release energy) through a turbine. The supercritical air energy storage system disclosed by the invention has the advantages of having high energy density and high efficiency, being free from limitation of the energy storage period and the geography condition, being suitable for a variety of power stations (including regenerative energy power stations such as wind energy), being environment-friendly, being capable of recycling the middle-low temperature (heat value) waste heat, and the like.

Description

A kind of supercritical air energy storage system of novel flow process

Technical field

The present invention relates to that the supercritical air energy storage of energy storage technical field, particularly a kind of novel flow process/releasing can system.

Background technique

Electric power energy storage technology is the important means of adjusting at present electrical network peak valley, improving power system economy and stability, being one of extensive most important bottleneck utilizing of unstable, the step renewable energy sources of restriction, is also the key technology of distributed energy and intelligent grid.At present existing electric power energy storage technology comprises pumped storage power station, pressurized air, storage battery, superconduction magnetic energy, flywheel and electric capacity etc.But due to reasons such as capacity, energy storage cycle, energy density, efficiency for charge-discharge, life-span, operating cost, environmental protection, only draw water two kinds of power station and the pressurized air that in large scale business system, have moved at present.

Conventional compression air energy-storage system is a kind of energy-storage system based on gas turbine technology exploitation.At low power consumption, air pressure is contractd and is stored in gas storage chamber, making electric energy conversion is that the interior of air can store; In peak of power consumption, high-pressure air discharges from gas storage chamber, enters gas-turbine combustion chamber and burns together with fuel, then drives turbine power generation.Compressed-air energy-storage system has that stored energy capacitance is large, the energy storage cycle is long, efficiency is high (50%~70%) and the advantage such as specific investment cost is relatively little, but, conventional compression air energy-storage system is not an independently technology, it must support the use with turbine power plant, can not be applicable to other types, as power stations such as coal fired power plant, nuclear power station, wind energy and solar energy, be not suitable for especially China taking coal fired power generation as main, do not advocate the energy strategy of gas fuel generating.And, compressed-air energy-storage system still relies on combustion of fossil fuels thermal source is provided, face on the one hand that fossil fuel is petered out and the threat of rise in price, its burning still produces the pollutants such as nitride, sulphide and carbon dioxide on the other hand, does not meet green (zero-emission), reproducible energy development requirement.More fatal, because energy storage density is low, compressed-air energy-storage system also needs specific geographical conditions to build large-scale gas storage chamber, as rock cavity, Yan Dong, abandoned mine etc., thereby has greatly limited the application area of compressed-air energy-storage system.

The subject matter facing for solving conventional compression air energy-storage system, the particularly Dependence Problem to gas turbine, recent years, Chinese scholars was carried out respectively ground compressed-air energy-storage system (SVCAES), compressed-air energy-storage system (AACAES), air vapor combined cycle compressed-air energy-storage system (CASH) etc. with backheat, made compressed-air energy-storage system substantially can depart from combustion of fossil fuel thermal source.But owing to not adopting fossil fuel thermal source, the energy density of compressed-air energy-storage system is lower, has more highlighted large-scale gas storage chamber is relied on, and efficiency is also not high enough simultaneously, must find rational solution, just can make air energy-storage system obtain more extensively and effectively utilize.

In recent years, Institute of Engineering Thernophysics, Academia Sinica has developed supercritical air energy storage system, and it utilizes the character under the super critical condition of air, solves the major technique bottleneck that the energy storage of conventional compression air exists.But large occupation of land is many, efficiency is not high problem that supercritical air energy storage system still exists reservoir vessel volume, the irreversible loss of single dependence throttle valve liquefaction is larger, system flow is reasonable not, and energy utilizes insufficient, causes system effectiveness lower (approximately only having 65% left and right).

The present invention proposes a kind of supercritical air energy storage of novel flow process/release can system, further promotes the performance of air energy-storage system, reduces costs simultaneously.

Summary of the invention

The object of the invention is openly a kind of supercritical air energy storage of novel flow process/release can system, and it utilizes system flow innovation, promotes supercritical air energy storage system performance, is suitable for all kinds power station and electrical network energy storage.Use after the combination of decompressor or decompressor and throttle valve, can effectively utilize the pressure energy of gas, realize the comprehensive cascade utilization of high-grade energy, be conducive to improve system liquid rate, break away from extraneous cold and supplement, thereby obviously improve system effectiveness.

For achieving the above object, technical solution of the present invention is:

The supercritical air energy storage of novel flow process/release and can system comprise compressor bank, accumulation of heat/heat exchanger package, cold-storage/heat exchanger package, expansion unit, low-temperature storage tank, valve, cryopump, turbines, generator, driver element and many pipelines.One of remarkable difference of it and supercritical air energy storage system is to replace throttle valve with the combination of decompressor or decompressor and throttle valve, decompressor is by gear-box or coupling drive compression machine, significantly increase system efficiency, application by accumulation of heat and cold-storage heat-exchanger group reduces materials consumption, reduces system cost.Another is significantly distinguished and is, accumulation of heat/heat exchanger package, at least comprises two accumulation of heat/heat exchangers under different working pressures, and store and take from heat cold between compression system, and for turbines; And cold-storage/heat exchanger package at least comprises two cold-storage/heat exchangers under different working pressures, store the cold of energy storage and exoergic process, design by different pressures, can save material, reduce system cost.

Compressor bank of the present invention comprises at least two compressors, mutually connects or is integrated into overall multistage compressor, and at least one compressor is directly driven by the unit that expands, to improve system effectiveness.After the outlet access cold-storage/heat exchanger of expansion unit afterbody, enter or directly enter throttle valve a little decrease temperature and pressure can realize liquefaction.Compressor and decompressor can be all piston type, centrifugal, axial flow and combined type, its type and number of units viewing system parameter and determine; Decompressor and compressor can be designed to coaxial combination, also can be connected compressor power is provided by gearbox, thereby improve system effectiveness and Economy.System layout is as follows:

Each stage compressor is connected with accumulation of heat/heat exchanger package respectively through pipeline; Design according to pressure coupling can reduce materials consumption, reduces system cost.High-pressure air after store compressed heat enters decompressor or is introduced into decompressor after pipeline enters the cooling of cold-storage heat-exchanger group, after decrease temperature and pressure, pass through again throttle valve (also can cancel) and enter low-temperature storage tank through pipeline, in pipeline, be provided with valve, at least one cryopump, valve is positioned at cryopump upstream; Accumulation of heat/heat exchanger combination superheater interlinks with turbines respectively through pipeline.

Its workflow is: when energy storage, utilize drive unit drives combined type compression unit, by a certain amount of air compressing, to supercritical state, the heat of compression of every grade is recovered and is stored in accumulation of heat/heat exchanger; Then the air of certain parameter enter in cold-storage/heat exchanger package cooling, then after expansion unit expansion decrease temperature and pressure, further by throttle valve or directly change liquid air into by decompressor and enter low-temperature storage tank storage; While releasing energy, cryopump liquid towards air pressurized is to certain pressure, high-pressure liquid air is warming up to supercritical state and reclaims cold energy in cold-storage/heat exchanger package, in accumulation of heat/heat exchanger package and superheater, absorbing the heat of compression further heats up air, then enter turbines acting, drive generator generating.

Described air energy-storage system, driver element described in it, is the motor driving with electrical network or conventional power plant trough-electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, biomass power generation, water power or tidal power generation one or more power supplys wherein.

Described air energy-storage system, its thermal energy storage process is rationed the power supply or enables when the quality of power supply does not meet internet access request in electric power low ebb, renewable energy sources; Exoergic process is enabled in the time of peak of power consumption, electric power accident, renewable energy power generation fluctuation.

Described air energy-storage system, its compression process comprises at least one decompressor, for making pressurized air decrease temperature and pressure be convenient to liquefy and reclaim expansion work, improves system effectiveness.

Described air energy-storage system, the medium storing in low-temperature storage tank is liquid air or other liquefiable working medium, in the time that working medium is not air, outlet is connected by the air bag of a constant voltage transfiguration with low-pressure turbine in low pressure compressor import, realize working medium circulation utilization, liquid refrigerant stores under normal pressure or band certain pressure situation.

Described air energy-storage system, described in it, accumulation of heat superheater is provided with pipeline, and this pipeline and extraneous thermal source interlink, and extraneous thermal source can be solar thermal collector, industrial exhaust heat and all kinds of used heat.Described waste heat, used heat are waste heat, the used heat of power plant, cement industry, iron and steel metallurgical industry, chemical industry; Waste heat, used heat can be stored in accumulation of heat/heat exchanger, also can be stored in special accumulation of heat superheater.

Described air energy-storage system, compressor bank described in it; In the time being multiple compressors, multiple compressors is coaxial series connection form or split axle parallel form; In parallel form, each split axle and main driving axle are dynamically connected; The exhaust of each stage compressor all cools through corresponding accumulation of heat/heat exchanger.

Described air energy-storage system, turbines described in it, final stage gas turbine exhaust approaches normal pressure; In the time being many turbo machines, many turbo machines are coaxial series connection form or split axle parallel form; In parallel form, each split axle and main driving axle are dynamically connected; Corresponding accumulation of heat/heat exchanger heat temperature raising is all first passed through in the air inlet of each stage turbine, or continues to heat up through accumulation of heat superheater.

Described air energy-storage system, described in it, compressor and decompressor can be all piston type, centrifugal, axial flow, screw type or combined type.

Described air energy-storage system, in the time of multiple compressors, many decompressors, multiple compressors, many decompressors are distributed on a live axle or many live axles, connect by gearbox described in it.

Described air energy-storage system, described in it, the accumulation of heat form of accumulation of heat/heat exchanger package is one or more that sensible heat, latent heat or chemical reaction are hankered; The heat storage medium adopting is water, paraffin, bio-oil, mineral-type crystalline hydrate salt, fuse salt, metal and alloy, organic fatty acid, stone, rock or concrete, and heat storage medium is stored in thermally insulated container.

Described air energy-storage system, cold-storage/heat exchanger described in it, it is Kelvin temperature unit that air is cooled to 81K-150K(K), be a kind of or combination in sensible heat cold-storage or solid-liquid phase change cold-storage; The sensible heat cool storage medium adopting is one or more in sealing ice hockey, sandstone, concrete, aluminium strip dish or other metallics; Solid-liquid phase change cool storage medium, is ammonia and the aqueous solution, salts solution, alkanes, olefines material and the compound thereof of solid-liquid phase change temperature between 81K~273K, one or more in alcohols and the aqueous solution thereof, and cool storage medium is stored in thermally insulated container; Air in cold-storage/heat exchanger with cool storage medium direct contact heat transfer or non-direct contact heat exchange; When energy storage, cold-storage/heat exchanger carries out further cooling being convenient to air and liquefies, and while releasing energy, cold-storage/heat exchanger reclaims and store the cold in high-pressure liquid atmosphere temperature rising process.

Described air energy-storage system, low-temperature storage tank described in it, is Dewar storage tank or low temperature storing tank, liquid air stores under atmospheric pressure or under pressure power situation.

Described air energy-storage system, when its energy storage, regulates energy storage capacity by controlling first order compressor air inflow.Described air energy-storage system, controls first order compressor air inflow described in it, is by regulating compressor load, valve opening, driving rotating speed, start-stop Partial shrinkage machine or regulating pressure ratio to realize the control of air inflow.When it releases energy, regulate generating capacity by controlling liquid air flow.

The invention has the advantages that: replace the decompressor of throttle valve coaxial or pass through the interconnected transmission of gear-box with compressor, energy storage efficiency reduces by 10% left and right than the raising of supercritical air system, system cost, has wide prospect of the application.

Brief description of the drawings

Fig. 1 is supercritical air energy storage system embodiment 1 structural representation of novel flow process of the present invention;

Fig. 2 is supercritical air energy storage system embodiment 2 structural representations of novel flow process of the present invention.

Embodiment

For making object of the present invention, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.

The supercritical air energy storage system of novel flow process of the present invention, adopt power station low ebb (at a low price) electric energy by air compressing to supercritical state (store compressed heat simultaneously), then utilize expansion unit to make air cooling-down step-down reclaim expansion work raises the efficiency simultaneously, in this process, decompressor is coaxial or interconnected by gear-box with compressor, contribute to raise the efficiency and reduce costs, utilize the cold energy of having stored by pressure-air cooling, liquefaction storage (energy storage); In peak of power consumption, liquid air pressurization is absorbed heat to supercritical state (cold energy in liquid air is recovered storage) simultaneously, and drive generator generating (releasing energy) by turbines after further absorbing the heat of compression of storing, in this process, some industrial waste heats can be recovered to improve system effectiveness.

Embodiment:

Fig. 1 is the supercritical air energy storage system embodiment 1 of novel flow process of the present invention.Comprise compressor units C1, C2, accumulation of heat/heat exchanger package 2,5, expansion unit E1, E2, cold-storage/heat exchanger package 8,10, low-temperature storage tank 15, valve 13,17, cryopump 19, turbines T1, T2, generator 29, drive motor 32, pipeline A, 1,3,4,6,7,9,11,12,14,16,18,20,21,22,23,24,25,27,28 etc.

Drive motor 32 is affixed with the total transmission shaft of compressor bank C1, C2, and generator 29 is affixed with the total transmission shaft of turbines T1, T2.Compressor bank C1, C2 are connected with accumulation of heat/heat exchanger package 2,5 respectively through pipeline 1,3,4,6.Low pressure compressor C1 entrance connects air.Through the supercritical air of accumulation of heat/heat exchanger 5 through pipeline 6,7,9,11 by cold-storage/heat exchanger package 8,10 and expansion unit E1, E2 decrease temperature and pressure, then liquefy through throttle valve 13.Accumulation of heat/heat exchanger package 2,5 is connected with expansion unit T1, T2 respectively through pipeline 22,23,24,25,27 with accumulation of heat superheater 26, the logical atmosphere of gas outlet of low-pressure turbine T1.Accumulation of heat superheater 26 interlinks through pipeline 30,31 and extraneous thermal source.

When energy storage, utilize driver element 32 drive compression unit C1, C2, by a certain amount of air compressing, to supercritical state, the heat of compression of every grade is recovered and is stored in the corresponding tank body of accumulation of heat/heat exchanger package 2,5; Then the air of certain parameter enters in cold-storage/heat exchanger package 8,10 cooling, again after expansion unit E1, E2 expansion decrease temperature and pressure, further through cold-storage heat-exchanger group or directly by throttle valve 13 or directly change liquid air into by decompressor and enter low-temperature storage tank storage 15; While releasing energy, cryopump 19 liquid towards air pressurized are to certain pressure, high-pressure liquid air is warming up to supercritical state and reclaims cold energy in cold-storage/heat exchanger package 8,10, in accumulation of heat/heat exchanger package 2,5 and superheater 26, absorbing the heat of compression further heats up air, then enter turbines T1, T2 acting, drive generator 29 to generate electricity.

Fig. 2 is the supercritical air energy storage system embodiment 2 of novel flow process of the present invention.Its structure is basic identical with embodiment 1, but before decompressor is all positioned at cold-storage/heat exchanger 8,10, and the Cryogenic air after expansion unit enters cold-storage/heat exchanger package and enters throttle valve 13 after cooling and further liquefy.Other workflows are similar with embodiment 1.

The foregoing is only preferred embodiment of the present invention, therefore do not limit protection scope of the present invention.

Claims (12)

1. novel flow process supercritical air energy storage/release can system, comprise Motorized drive unit (32), compressor bank (C1, C2), low-temperature storage tank (15), cryopump (19), turbines (T1, T2), generator (29), it is characterized in that:
Described system also comprises accumulation of heat/heat exchanger package (2,5), described accumulation of heat/heat exchanger package (2,5) matches with compressor bank (C1, C2) and turbines (T1, T2), at least comprise two accumulation of heat/heat exchangers, respectively under different working pressures, when system stored energy, store and take from heat and final stage exhaust gas heat cold between compressor bank (C1, C2), system release can time in order to heat the working gas of turbines (T1, T2);
Described system also comprises cold-storage/heat exchanger package (8,10), described cold-storage/heat exchanger package (8,10) matches with expansion unit (E1, E2) and turbines (T1, T2), at least comprise two cold-storage/heat exchangers, respectively under different working pressures, the cold of stocking system energy storage and exoergic process;
Described system also comprises expansion unit (E1, E2), compressor bank described in when system stored energy (C1, C2) by air compressing to supercritical state, with the combination of throttle valve (13), supercritical air decrease temperature and pressure is extremely liquid by described expansion unit (E1, E2) or described expansion unit (E1, E2), liquid air is stored in described low-temperature storage tank (15); Described expansion unit (E1, E2) is coaxially connected with at least one compressor in compressor bank (C1, C2), or is connected power is provided by gearbox (33), or for other equipment power supplies or power is provided;
Described system is divided into energy storage subtense angle and releases energy subtense angle: in described energy storage subtense angle, described driver element (32), compressor bank (C1, C2), accumulation of heat/heat exchanger package (2,5), expansion unit (E1, E2), cold-storage/heat exchanger package (8,10), low-temperature storage tank (15) are through a pipeline group (1,3,4,6,7,9,11,12,14) successively order UNICOM; Described releasing in energy subtense angle, described low-temperature storage tank (15), modulating valve (17), cryopump (19), cold-storage/heat exchanger package (8,10), accumulation of heat/heat exchanger package (2,5), turbines (T1, T2), generator (29) are through another pipeline group (16,18,20,21,22,23,24,25,27,28) successively order UNICOM;
Described compressor bank (C1, C2) comprise at least two compressors, separate unit pressure ratio is between 2~4, mutually connect or be integrated into overall multistage compression unit, wherein the suction port of first order compressor (C1) connects air-source (A), upper level compressor outlet is connected with the suction port of next stage compressor through after the accumulation of heat/heat exchanger (2) of corresponding pressure through pipeline, the air outlet of afterbody compressor is the high pressure accumulation of heat/heat exchanger (5) through described accumulation of heat/heat exchanger package through pipeline (4), successively enter expansion unit (E1, and cold-storage/heat exchanger package (8 E2), 10) after through pipeline (12, 14) enter low-temperature storage tank (15), described turbines (T1, T2) comprise at least one turbo machine, separate unit pressure ratio is between 2~6, mutually connect or be integrated into overall multistage turbine unit, liquid air in described low-temperature storage tank (15) passes through modulating valve (17) successively through pipeline, cryopump (19), cold-storage/heat exchanger package (10, 8), accumulation of heat/heat exchanger package (5, 2) pass into turbines after changing the air of supercritical state into, in each stage turbine, the air outlet of upper level turbo machine is connected with the suction port of next stage turbo machine after pipeline is through a heat absorption in described accumulation of heat/heat exchanger package, the logical atmosphere in air outlet of afterbody turbo machine (T1),
Described low-temperature storage tank (15) is Dewar storage tank or low temperature storing tank, the medium storing is liquid air or other liquefiable working medium, in the time that working medium is not air, the air outlet pipeline (28) of turbines (T1, T2) is connected by the air bag of a constant voltage transfiguration with the suction port pipeline (A) of compressor bank (C1, C2), realize working medium circulation utilization, liquid refrigerant stores under normal pressure or band certain pressure situation.
2. air energy storage according to claim 1/release energy system, is characterized in that: described expansion unit (E1, E2) comprises at least one decompressor, for making pressurized air decrease temperature and pressure be convenient to liquefy and reclaim expansion work, improves system effectiveness; Described expansion unit (E1, E2) can directly drive certain one-level in described compressor bank (C1, C2) by gearbox (33); Described driver element (32) is affixed with the transmission shaft of compressor bank (C1, C2); Described generator (29) is affixed with the transmission shaft of turbines (T1, T2).
3. air energy storage according to claim 1/release can system, it is characterized in that: described accumulation of heat/heat exchanger package (2,5) is heat-insulating container, heat storage medium is stored in container, supercritical air therein with heat storage medium direct contact heat transfer or non-direct contact heat exchange, heat storage type is a kind of or combination in sensible heat, latent-heat storage; When energy storage, accumulation of heat/heat exchanger package (2,5) reclaims and stores the heat of compression that compressor produces, release can time, heat into the pressurized air before each stage turbine.
4. air energy storage according to claim 1/release can system, it is characterized in that: described cold-storage/heat exchanger package (8,10) is heat-insulating container, cool storage medium is stored in container, supercritical air or liquid air therein with cool storage medium direct contact heat transfer or non-direct contact heat exchange, its cold-storage form is a kind of or combination in sensible heat cold-storage or solid-liquid phase change cold-storage; When energy storage, supercritical air is cooled to 81K-150K by cold-storage/heat exchanger (8,10), while releasing energy, and the cold discharging in recovery storing liquid atmosphere temperature rising process.
5. air energy storage according to claim 1/release can system, it is characterized in that, its workflow is: when energy storage, utilize driver element (32) drive compression unit (C1, C2), by a certain amount of air compressing, to supercritical state, the heat of compression is recovered and is stored in accumulation of heat/heat exchanger package (2,5); Pressurized air successively enters expansion unit (E1, E2) and the middle decrease temperature and pressure of cold-storage/heat exchanger package (8,10) and reclaims expansion work, Cryogenic air is by complete after throttle valve (13) or overwhelming majority liquefaction, and liquid air enters low-temperature storage tank (15) storage; While releasing energy, cryopump (19) liquid towards air pressurized is to supercritical pressure, high-pressure liquid air is warming up to supercritical state and reclaims cold energy in cold-storage/heat exchanger package (8,10), in accumulation of heat/heat exchanger package (2,5), absorbing the heat of compression heats supercritical air, or further heat up through an accumulation of heat superheater (26) again, enter turbines (T1, T2) expansion acting, drive generator (29) generating.
6. air energy storage according to claim 1/release can system, it is characterized in that: described driver element (32) is the motor driving with electrical network or conventional power plant trough-electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, biomass power generation, water power or tidal power generation one or more power supplys wherein.
7. air energy storage according to claim 5/release can system, it is characterized in that: described accumulation of heat superheater (26) is also provided with the pipeline (30,31) being connected with extraneous thermal source, and extraneous thermal source is solar thermal collector, industrial exhaust heat or various used heat.
8. air energy storage according to claim 1/release can system, it is characterized in that: described accumulation of heat/heat exchanger package (2,5), adopting heat storage medium is water, paraffin, bio-oil, mineral-type crystalline hydrate salt, fuse salt, metal and alloy, organic fatty acid, rock or concrete.
9. air energy storage according to claim 1/release can system, it is characterized in that: described cold-storage/heat exchanger package (8,10), the sensible heat cool storage medium adopting is one or more in sealing ice hockey, sandstone, concrete, aluminium strip dish or other metallics; Solid-liquid phase change cool storage medium, is ammonia and the aqueous solution, salts solution, alkanes, olefines material and the compound thereof of solid-liquid phase change temperature between 81K~273K, one or more in alcohols and the aqueous solution thereof.
10. air energy storage according to claim 2/release can system, it is characterized in that: described expansion unit (E1, E2) comprises many decompressors, every grade of expander inlet is all connected with the outlet of the cold-storage/heat exchanger of corresponding pressure, and the outlet of afterbody decompressor is connected with throttle valve (13).
11. air energy storage according to claim 2/release can system, it is characterized in that: described expansion unit (E1, E2) comprises many decompressors, every grade of expander inlet is all connected with the outlet of the cold-storage/heat exchanger of corresponding pressure, and the outlet of afterbody decompressor is connected with throttle valve (13) through after the hold/heat exchanger of low pressure (10) of described cold-storage/heat exchanger package through pipeline (12).
12. air energy storage according to claim 1/release can system, it is characterized in that: in some level of turbines, upper level turbo machine is given vent to anger and also enter next stage turbine inlet through an accumulation of heat superheater (26) after one in described accumulation of heat/heat exchanger package (5,2), further improve temperature, increase acting ability.
CN201210518522.1A 2012-12-06 2012-12-06 Supercritical air energy storage system with novel process CN103016152B (en)

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