CN106091576A - The cryogenic liquefying air energy storage method of a kind of coupled solar photothermal technique and system - Google Patents
The cryogenic liquefying air energy storage method of a kind of coupled solar photothermal technique and system Download PDFInfo
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- CN106091576A CN106091576A CN201610417199.7A CN201610417199A CN106091576A CN 106091576 A CN106091576 A CN 106091576A CN 201610417199 A CN201610417199 A CN 201610417199A CN 106091576 A CN106091576 A CN 106091576A
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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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S21/00—Solar heat collectors not provided for in groups F24S10/00-F24S20/00
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
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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
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The present invention provides energy storage method and the system of the deep cooling liquid air of a kind of solar energy techniques, said method comprising the steps of: step 1: utilize electric energy that gaseous air is converted under the conditions of cryogenic high pressure liquid air, collect described liquid air, and collect the heat energy of release in this conversion process, the described heat energy being collected is for providing hot conditions for step 2；Step 2: the described liquid air collected being converted under high-temperature and high-pressure conditions gaseous air, and collects the cold energy of release in this conversion process, the described cold energy being collected is for providing cryogenic conditions for step 1；Also include: step 3: collect and store solar energy optical-thermal, use heat energy collected in described solar energy optical-thermal and described step 1 jointly to provide hot conditions for described step 2.
Description
Technical field
The present invention relates to the technical field of energy storage of liquefied air, be specifically related to a kind of coupling light thermal cryogenic liquid state air
Energy storage method and a kind of photo-thermal energy-storing and power-generating system.
Background technology
Cryogenic liquefying air energy storage technology refers to electric energy is used for compressed air, by air high pressure in the network load low ebb phase
It is sealed in abandoned well, the seabed air accumulator of sedimentation, cavern, expired Oil/gas Well or newly-built gas storage well, on network load peak
The energy storage mode of phase release compressed air pushing turbine generating, liquid air energy-storage system has that stored energy capacitance is relatively big, energy storage
Cycle length, take up an area and little do not rely on the advantages such as geographical conditions.During energy storage, air is compressed, cools down and liquefy by electric energy, stores simultaneously
The heat energy of release during Gai, is used for when releasing energy adding hot-air；When releasing energy, liquid air is pressurized, gasification, promotes expansion power generation
Unit generation, stores the cold energy of this process simultaneously, cools down air when energy storage.But existing deep cooling liquid air energy storage systems
There is following defect: 1, deep cooling liquid air energy storage systems is inefficient, makes in prior art in liquid air gasification
Heat energy come from the heat energy of release when gaseous air is compressed into liquid air, due to heat energy collecting, store and transmit
During have bigger loss, hence in so that existing deep cooling liquid air energy storage systems liquid air gasification conversion ratio
Relatively low, it is impossible to meet use demand, prior art solves the mode of this problem for increasing heat storage and exchange equipment, such as large-scale cave
Formula air storage chambers etc., thus considerably increase cost and the floor space of system, and large-scale cave type air storage chamber etc. is the easiest
Affected by geological disasters such as earthquakes.2, being additionally limited to the transmission efficiency of heat energy, the gasification rate of liquid air gasification is relatively
Low, dynamic responding speed is slow, tends not to drive generating set to generate electricity timely.
Deep cooling liquid air energy storage systems is often used in combination with power station, is being stored with the form of liquid air by electric energy
After Laiing, need to put into substantial amounts of heat energy and liquid air just can be made to complete gasification, existing deep cooling liquid air energy storage systems
In, gaseous air is limited to heat energy loss during collecting heat energy during being compressed into liquefied air and filling rate limits, past
Toward needing to provide the supply of heat energy additionally by forms such as burn fossil, the most not only operating cost is higher, and exists certain
Environmental pollution.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome in prior art in cryogenic liquefying air energy storage systems and transports
Row is relatively costly, and there is the technological deficiency that certain environment pollutes.
For solving above-mentioned technical problem, the present invention provides the energy storage method of the deep cooling liquid air of solar energy techniques,
Comprise the following steps:
Step 1: utilize electric energy that gaseous air is converted under the conditions of cryogenic high pressure liquid air, collects described liquid empty
Gas, and collect the heat energy of release in this conversion process, the described heat energy being collected is for providing hot conditions for step 2；
Step 2: the described liquid air collected is converted under high-temperature and high-pressure conditions gaseous air, and collects this turn
The cold energy of release during change, the described cold energy being collected is for providing cryogenic conditions for step 1；
Also include:
Step 3: collect and store solar energy optical-thermal, uses heat collected in described solar energy optical-thermal and described step 1
Jointly can provide hot conditions for described step 2.
In the energy storage method of above-mentioned coupling light thermal cryogenic liquid state air, by described solar energy optical-thermal and described step
The heat energy collected in 1 together or respectively stores.
In the energy storage method of the deep cooling liquid air of above-mentioned solar energy techniques, by described solar energy optical-thermal and described
The heat energy collected in step 1 and heat exchanging fluid carry out heat exchange, and the heat energy that described heat exchanging fluid is carried discharges to walking
In the environment of rapid 2.
In the energy storage method of the deep cooling liquid air of above-mentioned solar energy techniques, described heat exchanging fluid is water.
The present invention also provides for the energy-storage system of the deep cooling liquid air of a kind of solar energy techniques, including:
Energy input devices, for for inputting energy in energy-storage system；
First air compression plant, is driven by described energy input devices and gaseous air is carried out one stage of compression；
Air cleaner, purifies the described gaseous air of one stage of compression；
Second air compression plant, is driven to enter the described gaseous air through one stage of compression by described energy input devices
Row two-stage compression becomes liquid air, and collects；
Heat-energy recovering apparatus, is collected the heat energy produced in two-stage compression process, and will collect in gasification
Heat be input in gasification installation；Gasification installation, pressurizes to liquid air, and receives the heat that described heat-energy recovering apparatus provides
Can, so that liquid air gasification；
Cold energy retracting device, is collected the cold energy produced in liquid air gasification in described gasification installation, and
The cold energy collected can be exported to the first air compression plant；
Light thermo-power station prime mover, is driven acting to generate electricity by the gasification of described liquid air；
Also including coupling light thermal, described coupling light thermal is used for collecting solar energy optical-thermal, and the heat that will collect
Can export to liquid air, provide hot environment for the gasification of described liquid air.
In the energy-storage system of the deep cooling liquid air of above-mentioned solar energy techniques, described heat-energy recovering apparatus is at least
One heat storage can, described heat storage can connects described coupling light thermal and described heat-energy recovering apparatus.
In the energy-storage system of the deep cooling liquid air of above-mentioned solar energy techniques, also include heat-exchanger rig, described in change
Thermal connects described heat storage can and gasification installation respectively；Described heat-exchanger rig internal memory contains heat exchanging fluid, in described heat storage can
Heat energy and described heat exchanging fluid generation heat exchange, the heat energy output that described heat exchanging fluid is carried is to described gasification installation
In.
In the energy-storage system of the deep cooling liquid air of above-mentioned solar energy techniques, described energy input devices is electronic
Machine, it converts electrical energy into mechanical energy and drives described first air compression plant and the second air compression plant and liquefying plant
Acting.
In the energy-storage system of the deep cooling liquid air of above-mentioned solar energy techniques, described first air compression plant is
Low pressure compressor；
Described second air compression plant and liquefying plant are high pressure compressor.
In the energy-storage system of the deep cooling liquid air of above-mentioned solar energy techniques, described smooth thermo-power station prime mover is for steaming
One in steam turbine, gas turbine or Stirling-electric hybrid or any two or three.
Technical solution of the present invention, has the advantage that
1. in the cryogenic liquefying air energy storage method of the coupled solar photothermal technique that the present invention provides, by by solar energy
Photo-thermal provides hot conditions for step 2 after collecting, thus effectively raises the gasification rate of too air, and solar energy
Collection and the conveying cost of heat are relatively low, and compared to the mode of other supplementary heat energy, solar energy optical-thermal is apparently according to economic advantages.
2., in the cryogenic liquefying air energy storage systems of the coupled solar photothermal technique that the present invention provides, photo-thermal energy storage is sent out
Cryogenic liquefying air energy storage systems and light thermo-power station are used in combination by electricity system, solve cryogenic liquid by the introducing of light thermo-power station
That changes air energy storage systems uses heat demand；And solve light thermo-power station by solar radiation ripple by cryogenic liquefying air energy storage systems
Dynamic property, the problem of randomness impact.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is cryogenic liquefying air energy storage method and the system of the coupled solar photothermal technique in the embodiment of the present invention 2
Principle schematic.
Description of reference numerals:
1-energy input devices；2-the first air compression plant；3-air cleaner；4-the second air compression plant and
Liquefying plant；6-gasification installation；7-light thermo-power station prime mover；8-couples light thermal；9-cold energy retracting device；12-heat storage can；
13-heat-exchanger rig.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
If additionally, the most non-structure of technical characteristic involved in invention described below difference embodiment
Become conflict just can be combined with each other.
Embodiment 1
The present embodiment provides the energy storage method of a kind of cryogenic liquefying air, comprises the following steps:
Step 1: utilize electric energy that gaseous air is converted under the conditions of cryogenic high pressure liquid air, and collect described liquid
Air, collects the heat energy of release in this conversion process, and the described heat energy being collected is for providing hot conditions for step 2；
Step 2: the described liquid air collected is converted under high-temperature and high-pressure conditions gaseous air, and collects this turn
The cold energy of release during change, the described cold energy being collected is for providing cryogenic conditions for step 1；
Step 3: collect and store solar energy optical-thermal, uses heat collected in described solar energy optical-thermal and described step 1
Jointly can provide hot conditions for described step 2.
Above-mentioned embodiment is the core technology scheme of the present embodiment, by collecting and storing
Light thermo-power station is affected by undulatory property and the randomness of solar radiation, tends not to transmit electricity continually and steadily, the present embodiment
Photo-thermal energy-storing and power-generating system cryogenic liquefying air energy storage systems and light thermo-power station are used in combination, by the introducing of light thermo-power station
Solve cryogenic liquefying air energy storage systems uses heat demand；And solve light thermo-power station by cryogenic liquefying air energy storage systems
The problem affected by solar radiation undulatory property, randomness.
During being gasified by liquid air, required heat energy is more, causes liquid air gasification efficiency relatively slow,
In order to solve this problem, in the present embodiment, step 3 is by collecting inexhaustible solar energy optical-thermal as heat energy, liquid air
Heat energy one required in gasification derives from the heat energy collected in step 1, and another part then derives from solar energy optical-thermal.
In the present embodiment, provide hot conditions for step 2 after being collected by solar energy optical-thermal by step 3, thus effectively raise also
The gasification rate of space gas, and the collection of solar energy optical-thermal and conveying cost relatively low, compared to the mode of other supplementary heat energy,
Solar energy optical-thermal is apparently according to economic advantages.
Further, described step 3 also includes by the heat energy of collection in described solar energy optical-thermal and described step 1 together
Or store respectively.Such as, the heat energy collected in solar energy optical-thermal and step 1 can be to store respectively, retells two during use
The heat energy of person mix/exports respectively；Can also be that the heat energy collected in solar energy optical-thermal and step 1 is stored, during use jointly
Again both heat energy is together exported.
In order to improve heat exchanger effectiveness, described step 3 also includes: will described solar energy optical-thermal and described step 1 be received
The heat energy of collection and heat exchanging fluid carry out heat exchange, and the heat energy that described heat exchanging fluid is carried again discharges to the ring carrying out step 2
In border.Wherein, described heat exchanging fluid is preferably water, in actual use, and heat energy one collected in solar energy optical-thermal and step 1
It is heated rapidly to gaseous state with by water by liquid, retells high-temperature vapor and be together passed in the environment carrying out described step 2.Connect down
Carry out steam and can the heat that himself carries be exchanged to liquid air, promote liquid air to gasify rapidly, then water is steamed
The gaseous air that gas and liquid air gasification obtain together exports, and drive acting device is done work thus complete by both mixed gas
Become generating.Reason that heat exchanging fluid be water is preferably used in this enforcement be: on the one hand specific heat of water holds relatively big, liquid become
More heat energy can be carried during gaseous state；On the other hand aqueous water is pollution-free and easily obtains, and high-temperature vapor is permissible
The gaseous air obtained after gasifying with liquid air together exports to acting device, it is possible to auxiliary liquid air acting.
Embodiment 2
The present embodiment provides a kind of photo-thermal energy-storing and power-generating system, carries out the energy-storage system of the present embodiment below in conjunction with Fig. 1
Detailed description:
The photo-thermal energy-storing and power-generating system of the present embodiment includes:
Energy input devices 1, i.e. motor, it converts electrical energy into mechanical energy and drives the first air compression plant 2 He
Second air compression plant 4 does work, and wherein the first air compression plant 2 is low pressure compressor；Second air compression plant 4 is high
Pressure compressor.Specifically, gaseous air is carried out one stage of compression to being driven by energy input devices 1 by the first air compression plant 2,
Now the air through one stage of compression is still gaseous state, after then being purified by air cleaner 3 by the gas after one stage of compression
Carry out two-stage compression, the second air compression plant and liquefying plant 4 again by the air after purifying at the environment of cryogenic high pressure
Under be compressed into liquid air, and liquid air is collected, such as, collects in the device such as storage chamber, tank body.In two-stage compression process
While carrying out, the heat energy produced in two-stage compression process is collected storing by heat-energy recovering apparatus.Energy input devices 1 is i.e.
The mechanical energy that motor is consumed, converts for the interior energy of liquid air, this completes the storage process of energy.
Additionally, the photo-thermal energy-storing and power-generating system of the present embodiment also includes:
Coupling light thermal 8, coupling light thermal 8 is used for collecting solar energy optical-thermal, and is exported extremely by the heat energy collected
Liquid air, provides hot environment for the gasification of described liquid air.Coupling light thermal Final 8 solar energy optical-thermal is liquid after collecting
Air gasification provides hot conditions, thus effectively raises the gasification rate of too air, and the collection of solar energy optical-thermal
Relatively low with conveying cost, compared to the mode of other supplementary heat energy, solar energy optical-thermal is apparently according to economic advantages.Specifically, coupling
The heat energy collected in conjunction light thermal 8 can together be stored in heat energy with the heat energy of collection in above-mentioned gaseous air compression process and return
In the middle of receiving apparatus, then in liquid air gasification, heat energy is carried out heat exchange by heat-exchanger rig 13.
The release process of energy is:
Liquid air is stored in liquefied air storage tank, and liquid air is by cyropump output to gasification installation 6, described
Gasification installation 6 is preferably vaporizer.Liquid air can be pressurizeed by gasification installation 6, thus promotes liquid air generating gasification swollen
Swollen, simultaneously, owing to heat storage can is connected by heat-exchanger rig 13 with described gasification installation 6, the heat will collected in thermal energy storage process
The thermal energy exchange can collected with coupling light thermal 8 is to liquid air, thus promotes the lifting of liquid air gasification rate, and carries
The enthalpy of high gaseous air, improves mechanical efficiency and the dynamic responding speed of described gaseous air.
While liquid air gasifies, cold energy retracting device 9 cold energy produced to liquid air gasification is collected,
Owing to being connected by cold-exchange between cold energy retracting device 9 and the second air compression plant 4, cold energy retracting device 9 is collected
Cold energy can be used in thermal energy storage process, in the first air compression plant 2 and the second air compression plant 4.Further, liquid is empty
After gas is gasificated into gaseous state, it is possible to drive and expand unit 7 expansion work, thus complete exoergic process.
As one preferred embodiment, described heat-energy recovering apparatus is at least one heat storage can, described heat storage can 12
Connect described coupling light thermal 8 and described heat-energy recovering apparatus.Heat-exchanger rig 13 connects described heat storage can 12 and gasification respectively
Device 6；Described heat-exchanger rig 13 internal memory contains heat exchanging fluid, and the heat energy in described heat storage can 12 occurs heat with described heat exchanging fluid
Exchange, in the heat energy output that described heat exchanging fluid is carried to described gasification installation 6.
In practical work process, liquid air completes gasification by repeatedly expansion process, such as, in the present embodiment
The light focus prime mover 7 used is the one in steam turbine, gas turbine or Stirling-electric hybrid or any two or three.Heat exchange
Device 13 can be connected with above-mentioned steam turbine, gas turbine or Stirling-electric hybrid, completes gasification for liquid air and provides heat energy.
In prior art, light thermo-power station is affected by undulatory property and the randomness of solar radiation, tends not to the most defeated
Electricity, cryogenic liquefying air energy storage systems and light thermo-power station are used in combination, by light by the photo-thermal energy-storing and power-generating system of the present embodiment
What the introducing of thermo-power station solved cryogenic liquefying air energy storage systems uses heat demand；And by cryogenic liquefying air energy storage systems solution
The problem that light thermo-power station of having determined is affected by solar radiation undulatory property, randomness.
Additionally, solve the technological means that stored energy rate is low, conversion rate is slow of cryogenic liquefying air often: utilize pressure
The heat of compression of contracting machine carries out accumulation of heat storage to improve the gas temperature for expansion power generation；Need to increase heat storage and exchange equipment, increase
Adding system cost, and owing to compression end causes equipment manufacturing cost to improve for the demand of the high-grade heat of compression, therefore system effectiveness
Lifting cost improve further, compressed-air energy-storage system large-scale cave type air storage chamber etc. can be by geological disasters such as earthquakes
Impact.And in the present embodiment, by coupling the setting of light thermal 8 so that the conversion ratio of liquid air and conversion rate have aobvious
Write and promote, the heat storage and exchange equipment involved great expense without increase, it is significantly reduced cost.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Right
For those of ordinary skill in the field, can also make on the basis of the above description other multi-form change or
Variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (10)
1. an energy storage method for the deep cooling liquid air of coupled solar photothermal technique, comprises the following steps:
Step 1: utilize electric energy that gaseous air is converted under the conditions of cryogenic high pressure liquid air, collect described liquid air,
And collect the heat energy of release in this conversion process, the described heat energy being collected is for providing hot conditions for step 2；
Step 2: the described liquid air collected is converted into gaseous air under high-temperature and high-pressure conditions, and it is transformed to collect this
The cold energy of release in journey, the described cold energy being collected is for providing cryogenic conditions for step 1；
It is characterized in that, also include:
Step 3: collect and store solar energy optical-thermal, uses heat energy collected in described solar energy optical-thermal and described step 1 altogether
It is all described step 2 and hot conditions is provided.
The energy storage method of the deep cooling liquid air of coupled solar photothermal technique the most according to claim 1, its feature exists
In:
Described step 3 also includes: together or respectively stored by the heat energy collected in described solar energy optical-thermal and described step 1.
The energy storage method of the deep cooling liquid air of coupled solar photothermal technique the most according to claim 2, its feature exists
In:
After described step 3 is collected and stored solar energy optical-thermal, also: by what described solar energy optical-thermal and described step 1 were collected
Heat energy and heat exchanging fluid carry out heat exchange, in the heat energy release that described heat exchanging fluid is carried to the environment carrying out step 2.
4. according to the energy storage method of the deep cooling liquid air of the coupled solar photothermal technique described in Claims 2 or 3, its feature
It is:
Described heat exchanging fluid is water.
5. an energy-storage system for the deep cooling liquid air of coupled solar photothermal technique, including:
Energy input devices (1), for for inputting energy in energy-storage system；
First air compression plant (2), is driven by described energy input devices (1) and gaseous air is carried out one stage of compression；
Air cleaner (3), purifies the described gaseous air of one stage of compression；
Second air compression plant (4), is driven the described gaseous air through one stage of compression by described energy input devices (1)
Carry out two-stage compression and become liquid air, and collect；
Heat-energy recovering apparatus, is collected the heat energy produced in two-stage compression process, and the heat will collected in gasification
Amount is input in gasification installation (6)；Gasification installation (6), pressurizes to liquid air, and receives what described heat-energy recovering apparatus provided
Heat energy, so that liquid air gasification；
Cold energy retracting device (9), is collected the cold energy produced in liquid air gasification in described gasification installation (6),
And the cold energy collected can be exported to the first air compression plant (4)；
Light thermo-power station prime mover (7), is driven acting to generate electricity by the gasification of described liquid air；
It is characterized in that:
Also include coupling light thermal (8), described coupling light thermal (8) is used for collecting solar energy optical-thermal, and will collect
Heat energy output, to liquid air, provides hot environment for the gasification of described liquid air.
The energy-storage system of the deep cooling liquid air of solar energy techniques the most according to claim 5, it is characterised in that:
Described heat-energy recovering apparatus is at least one heat storage can, described heat storage can (12) connect described coupling light thermal (8) and
Described heat-energy recovering apparatus.
The energy-storage system of the deep cooling liquid air of solar energy techniques the most according to claim 6, it is characterised in that:
Also include that heat-exchanger rig (13), described heat-exchanger rig (13) connect described heat storage can (12) and gasification installation (6) respectively；Institute
Stating heat-exchanger rig (13) internal memory and contain heat exchanging fluid, the heat energy in described heat storage can (12) and described heat exchanging fluid occur heat to hand over
Change, in the heat energy output that described heat exchanging fluid is carried to described gasification installation (6).
The energy-storage system of the deep cooling liquid air of solar energy techniques the most according to claim 5, it is characterised in that:
Described energy input devices (1) is motor, and it converts electrical energy into mechanical energy and drives described first air compression dress
Put (2) and the second air compression plant and liquefying plant (4) acting.
The energy-storage system of the deep cooling liquid air of solar energy techniques the most according to claim 8, it is characterised in that:
Described first air compression plant (2) is low pressure compressor；
Described second air compression plant and liquefying plant (4) are high pressure compressor.
The energy-storage system of the deep cooling liquid air of solar energy techniques the most according to claim 5, it is characterised in that:
Described smooth thermo-power station prime mover (7) is the one in steam turbine, gas turbine or Stirling-electric hybrid or any two kinds or three
Kind.
Priority Applications (1)
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| CN108444215A (en) * | 2018-03-27 | 2018-08-24 | 俞琦 | A kind of air liquefaction plant |
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