CN205425926U - Multistage gradient phase change cold accumulator - Google Patents
Multistage gradient phase change cold accumulator Download PDFInfo
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- CN205425926U CN205425926U CN201620108430.XU CN201620108430U CN205425926U CN 205425926 U CN205425926 U CN 205425926U CN 201620108430 U CN201620108430 U CN 201620108430U CN 205425926 U CN205425926 U CN 205425926U
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- 230000008859 change Effects 0.000 title claims description 42
- 238000003860 storage Methods 0.000 claims abstract description 114
- 238000004146 energy storage Methods 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000000126 substance Substances 0.000 claims description 28
- 239000012071 phase Substances 0.000 claims description 22
- 239000007791 liquid phase Substances 0.000 claims description 18
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 claims description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 6
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- CXBDYQVECUFKRK-UHFFFAOYSA-N 1-methoxybutane Chemical compound CCCCOC CXBDYQVECUFKRK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004338 Dichlorodifluoromethane Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- AFYPFACVUDMOHA-UHFFFAOYSA-N chlorotrifluoromethane Chemical compound FC(F)(F)Cl AFYPFACVUDMOHA-UHFFFAOYSA-N 0.000 claims description 3
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 claims description 3
- 235000019404 dichlorodifluoromethane Nutrition 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229940005605 valeric acid Drugs 0.000 claims description 3
- 238000012546 transfer Methods 0.000 abstract description 12
- 230000007704 transition Effects 0.000 abstract 3
- 238000012856 packing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 17
- 239000007789 gas Substances 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
Abstract
The application discloses multistage gradient phase transition regenerator for low temperature liquid air energy storage, include multistage cold-storage unit and locate gas heat transfer runner in the cold-storage unit, multistage cold-storage unit packing has phase transition cold-storage working medium, and gaseous flow through during the gas heat transfer runner with each cold-storage unit in the phase transition cold-storage working medium heat transfer step by step. The application can effectively reduce the system loss caused by unsteady heat transfer temperature difference.
Description
Technical field
The application relates to energy storage technology field, particularly relates to a kind of multistage gradient phase-change cold-storage device.
Background technology
The Mass storage of electric energy is one of energy core technology with power system development, it will change electrical energy production, carry and use the present situation that need to synchronously complete, make up " storing " function of disappearance in existing power system, reach to optimize electric power resource configuration, improve the quality of power supply, promotion renewable energy utilization and the purpose of energy-saving and emission-reduction.Adding up according to The National Electric Power Communication Center, along with raising and the adjustment of national industry structure of living standards of the people, the amplitude of China's network load " peak-valley difference " will increase year by year, and introducing energy-storage system in electrical network is the urgent needs realizing peak load regulation network.Energy-storage system absorbs electric energy when network load low ebb from electrical network, exports electric energy when network load peak value to electrical network, and large-scale energy storage system contributes to solving " peak load shifting " economic operation problem.
Conventional energy storage technology mainly has flywheel energy storage, battery energy storage, superconducting energy storage, ultracapacitor energy storage, energy storage of drawing water, compressed-air energy storage and liquid air energy storage etc..But can last for hours and carry out the energy storage technology of Large Copacity output and specifically include that water-storage, battery energy storage, compressed-air energy storage and liquid air energy storage, they are that a few is capable of the long-time and technology of Large Copacity (hundreds of to thousands of megawatt hours) stored energy application.The advantages such as water-storage, as presently most ripe extensive stored energy application technology, has efficiency high, and stored energy capacitance is big, and equipment and technology is ripe, but limited by cistern addressing difficulty, hinder its large-scale popularization and application. simultaneously.Battery energy storage is high because of its cost, produces and subsequent treatment exists the problems such as environmental pollution, be difficult at present extend to extensive energy storage field.Compressed-air energy storage carries out energy storage with air internal energy form, it is possible to use polytype storing mode, including Underground Salt hole and high pressure gas storage tank etc..
Low temperature liquid air energy storage systems, use liquid air as energy-accumulating medium, substantially increase the density of energy storage, there is the advantages such as capacity is big, conversion efficiency is high, rely on without geographical conditions, the method for operation is flexible, environmental pollution is little, there are the potentiality of large-scale promotion application.System uses valley electricity to drive compressor to be compressed by air, utilizes the cold energy that the last cycle stores will enter storage in low temperature storing tank after air cooling liquid;When liquid air energy-storage system releases energy, utilize cryopump that liquid air is drawn from low temperature storing tank pressurization, low-temperature cold accumulation system is utilized to reclaim the cold energy storing liquid air rewarming process, promoting turbo-expander to drive electromotor acting after making its rewarming that absorbs heat, the cold energy during low temperature cold-storage system reclaims storing liquid air simultaneously is for the air cooling liquid of next cycle.The height affecting liquid air energy-storage system operational efficiency is that process of cool cold recovery utilizes the height of process efficiency.
Summary of the invention
The embodiment of the present application provides a kind of multistage gradient phase-change cold-storage device, in order to solve in prior art cool storage medium Chu Lenghe release cold during there is the problem that the bigger unsteady-state heat transfer temperature difference causes system loss.
The embodiment of the present application employing following technical proposals:
A kind of multistage gradient phase-change cold-storage device, for low temperature liquid air energy storage, including multistage cold-storage unit and be located at the gas converting heat runner in described cold-storage unit, described multistage cold-storage unit is filled with phase change cold-storage working substance, with the phase change cold-storage working substance stage-by-stage heat exchange in each cold-storage unit when gas flows through described gas converting heat runner.
Preferably, described multistage cold-storage unit includes that the independent cold-storage unit of multiple series connection, described independent cold-storage unit at different levels all fill a kind of solid-liquid phase change material, the solid-liquid phase change temperature of described multistage solid-liquid phase change material according to heat exchange warm area from 300K~77K Gradient distribution.
Preferably, described cold-storage unit at different levels to increase heat exchange area, rely on the gas converting heat of latent heat of phase change and gas coming through heat exchange runner with foamed aluminium for matrix filling solid-liquid phase change material.
Preferably, described multi-level phase change cold-storage working substance is followed successively by glycerol, diethylene glycol, positive valeric acid, butyl methyl ether, 1 amylalcohol, pentane, dichlorodifluoromethane, chlorotrifluoromethane.
Preferably, described gas converting heat runner is arranged in each cold-storage unit with tubulation or coil form, gas by runner successively with multiple independent cold-storage unit heat exchange connected.
Preferably, described gas converting heat runner includes energy storage air inlet runner, releases and can go out flow channel and the runner that backflows.
Relative to prior art, the multistage gradient phase-change cold-storage device that this utility model provides arranges multistage cold-storage unit, described cold-storage unit uses at the multistage solid-liquid phase change cold-storage working substance of 300K~77K warm area as cold-storage working substance as Cooling capacity exchanging medium, so, the least heat transfer temperature difference can be realized inside cold-storage unit, reduce in diabatic process and lose, thus be conducive to improving system stored energy efficiency, i.e. utilize the high latent heat of multistage solid-liquid phase change cold-storage working substance, wide warm area and efficient heat transfer efficiency to improve efficiency, thus be greatly improved the efficiency of described multistage gradient phase-change cold-storage device.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, and the schematic description and description of the application is used for explaining the application, is not intended that the improper restriction to the application.In the accompanying drawings:
The multistage gradient phase-change cold-storage device schematic diagram that Fig. 1 provides for the application.
Detailed description of the invention
For making the purpose of the application, technical scheme and advantage clearer, below in conjunction with the application specific embodiment and corresponding accompanying drawing, technical scheme is clearly and completely described.Obviously, described embodiment is only some embodiments of the present application rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of the application protection.
Below in conjunction with accompanying drawing, describe the technical scheme that each embodiment of the application provides in detail.
Referring to shown in Fig. 1, the application provides a kind of multistage gradient phase-change cold-storage device, for low temperature liquid air energy storage, including multistage cold-storage cell S1…Sn, gas converting heat runner 1,2,3 and be located at the adiabatic insulation 4 between described each cold-storage unit.
Described cold-storage unit fills solid-liquid phase change cold-storage working substance with foamed aluminium for matrix, and described gas converting heat runner is arranged in described cold-storage unit, and gas flows through heat exchange runner and described cold-storage unit stage-by-stage heat exchange.
The application multistage gradient phase-change cold-storage device comprises n level cold-storage unit (n is natural number), and the use warm area of described phase change cold-storage working substance is 300K~77K, the most described n level cold-storage cell S1…SnThe solid-liquid phase change cold-storage working substance of interior filling is distributed according to 300K~77K.Thus, described multistage gradient phase-change cold-storage device uses the phase change cold-storage working substance of 300K~77K warm area as cold-storage working substance, using described multistage gradient phase change cold-storage unit as Cooling capacity exchanging equipment, the least heat transfer temperature difference can be realized inside regenerator, reduce in diabatic process and lose, thus be conducive to improving energy storage efficiency.Described filling solid-liquid phase change cold-storage working substance can be the combination of multiple working medium, to ensure to descend temperature stabilization in working order, specifically, described multi-level phase change cold-storage working substance is followed successively by glycerol, diethylene glycol, positive valeric acid, butyl methyl ether, 1 amylalcohol, pentane, dichlorodifluoromethane, chlorotrifluoromethane.Described n level cold-storage unit is the independent cold-storage unit of multiple series connection, and described independent cold-storage unit at different levels all fill a kind of solid-liquid phase change material, and the solid-liquid phase change temperature of described multistage solid-liquid phase change material, according to heat exchange warm area Gradient distribution, is successively decreased step by step from room temperature warm area.
Described gas converting heat runner is arranged in regenerator with tubulation or coil form, it is possible to use the big heat exchange area of described gas converting heat passage realizes little temperature difference high efficient heat exchanging.Described gas converting heat runner includes energy storage air inlet runner 1, the runner 2 that backflows, releases and can go out flow channel 3.
Herein described multistage gradient phase-change cold-storage device connects choke valve and wet tank (not shown), pressure-air is lowered the temperature by described multistage cold-storage unit stage-by-stage heat exchange through described energy storage air inlet runner 1 order, and is stored in described wet tank with liquid air after the throttling liquefaction of described choke valve.Liquid air in described wet tank is extracted out by cryopump (not shown) and is passed through described multistage cold-storage unit stage-by-stage heat exchange and heats up to be formed and release to go out flow channel 3 and export described in expanded air warp.Simultaneously, the runner 2 that backflows described in the air warp not liquefied in described wet tank flows through described multistage cold-storage unit with contrary with described pressure-air, i.e. pressure-air formation of not liquefying is backflowed air, obviously, the air not liquefied cools down phase change cold-storage working substance at different levels step by step when backflowing by described multistage cold-storage unit, the cold of the air that backflows is recycled completely, thus can be effectively improved the cold-storage efficiency of the application multistage gradient phase-change cold-storage device.
The application multistage gradient phase-change cold-storage device includes storing up cold process and releasing cold process, and operation principle is as follows:
Store up cold process: before startup, each cold-storage cell S1…SnThe phase change cold-storage working substance of interior filling is all in cold conditions, and for the biphase state of solid-liquid, in described cold-storage unit, cold stores with phase change cold-storage working substance latent heat form;During storage is cold, cold-storage cell S1…SnThe phase change cold-storage working substance of interior cold conditions is distributed, in cold-storage cell S according to the warm area of 300K~77K1…SnIn, step by step with the gases at high pressure heat exchange in energy storage air inlet runner, phase change cold-storage working substances at different levels are heated to form hot storage, and the phasor of phase change cold-storage working substance increases, and is still the biphase state of solid-liquid, temperature-resistant.Pressure-air in described energy storage air inlet runner is cooled down step by step, the low temperature liquid air obtained enters the throttling liquefaction of described choke valve and is stored in described wet tank with liquid air, throttling liquefaction process is while obtaining liquid air, complete throttling temperature-fall period and supplement cold, completion system cold balancing, it is to avoid extraneous cold input.During this storage is cold, cold completes the transfer process from phase change cold-storage working substance-liquid air.
Release cold process: each cold-storage cell S1…SnIn hot phase change cold-storage working substance according to the distribution of 300K~77K warm area, in cold-storage unit step by step with liquid air heat exchange, phase change cold-storage working substances at different levels are cooled into cold conditions and store, and solid phase amount increases, and temperature is the most constant.The low temperature liquid air rewarming step by step stored, the expanded air obtained enters and expands unit expansion work output energy, and this releases cold process, and cold completes the transfer process from liquid air-phase change cold-storage working substance.
Relative to prior art, the multistage gradient phase-change cold-storage device that this utility model provides arranges multistage cold-storage unit, described cold-storage unit uses at the multistage solid-liquid phase change cold-storage working substance of 300K~77K warm area as cold-storage working substance as Cooling capacity exchanging medium, so, the least heat transfer temperature difference can be realized inside cold-storage unit, reduce in diabatic process and lose, thus be conducive to improving system stored energy efficiency, i.e. utilize the high latent heat of multistage solid-liquid phase change cold-storage working substance, wide warm area and efficient heat transfer efficiency to improve efficiency, thus be greatly improved the efficiency of described multistage gradient phase-change cold-storage device.
It can further be stated that, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include that the process of a series of key element, method, commodity or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, commodity or equipment.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, commodity or equipment.
The foregoing is only embodiments herein, be not limited to the application.To those skilled in the art, the application can have various modifications and variations.All any modification, equivalent substitution and improvement etc. made within spirit herein and principle, within the scope of should be included in claims hereof.
Claims (6)
1. a multistage gradient phase-change cold-storage device, for low temperature liquid air energy storage, it is characterized in that, including multistage cold-storage unit and be located at the gas converting heat runner in described cold-storage unit, described multistage cold-storage unit is filled with phase change cold-storage working substance, with the phase change cold-storage working substance stage-by-stage heat exchange in each cold-storage unit when gas flows through described gas converting heat runner.
2. multistage gradient phase-change cold-storage device as claimed in claim 1, it is characterized in that, described multistage cold-storage unit includes the independent cold-storage unit of multiple series connection, described independent cold-storage unit at different levels all fills a kind of solid-liquid phase change material, the solid-liquid phase change temperature of described multistage solid-liquid phase change material according to heat exchange warm area from 300K~77K Gradient distribution.
3. multistage gradient phase-change cold-storage device as claimed in claim 2, it is characterised in that described cold-storage unit at different levels to increase heat exchange area, rely on the gas converting heat of latent heat of phase change and gas coming through heat exchange runner with foamed aluminium for matrix filling solid-liquid phase change material.
4. the multistage gradient phase-change cold-storage device as described in any one of claim 1-3, it is characterised in that described multi-level phase change cold-storage working substance is followed successively by glycerol, diethylene glycol, positive valeric acid, butyl methyl ether, 1 amylalcohol, pentane, dichlorodifluoromethane, chlorotrifluoromethane.
5. multistage gradient phase-change cold-storage device as claimed in claim 2, it is characterised in that described gas converting heat runner is arranged in each cold-storage unit with tubulation or coil form, gas by runner successively with multiple independent cold-storage unit heat exchange connected.
6. multistage gradient phase-change cold-storage device as claimed in claim 5, it is characterised in that described gas converting heat runner includes energy storage air inlet runner, releases and can go out flow channel and the runner that backflows.
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CN201620108430.XU CN205425926U (en) | 2016-02-03 | 2016-02-03 | Multistage gradient phase change cold accumulator |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107381508A (en) * | 2017-07-14 | 2017-11-24 | 迈奇曼德(北京)科技有限责任公司 | A kind of method of phase-change material control oxygen making reaction temperature |
CN107401943A (en) * | 2017-07-21 | 2017-11-28 | 新乡市特美特换热设备有限公司 | A kind of phase-change material proportional allocation of energy storage system with solid-liquid phase change heat exchanger |
CN107542649A (en) * | 2017-09-25 | 2018-01-05 | 中国科学院理化技术研究所 | Low-temperature high-pressure liquid air energy storage system |
CN109880596A (en) * | 2019-02-12 | 2019-06-14 | 武汉博茗低碳产业股份有限公司 | A kind of gradient PCM storage unit and preparation method thereof |
CN112955521A (en) * | 2021-01-19 | 2021-06-11 | 香港应用科技研究院有限公司 | Thermal conditioning module for cooling energy packs |
US12009494B2 (en) | 2021-01-19 | 2024-06-11 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Thermal regulatory modules useful for cooling energy packs |
-
2016
- 2016-02-03 CN CN201620108430.XU patent/CN205425926U/en active Active
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107381508A (en) * | 2017-07-14 | 2017-11-24 | 迈奇曼德(北京)科技有限责任公司 | A kind of method of phase-change material control oxygen making reaction temperature |
CN107401943A (en) * | 2017-07-21 | 2017-11-28 | 新乡市特美特换热设备有限公司 | A kind of phase-change material proportional allocation of energy storage system with solid-liquid phase change heat exchanger |
CN107542649A (en) * | 2017-09-25 | 2018-01-05 | 中国科学院理化技术研究所 | Low-temperature high-pressure liquid air energy storage system |
CN109880596A (en) * | 2019-02-12 | 2019-06-14 | 武汉博茗低碳产业股份有限公司 | A kind of gradient PCM storage unit and preparation method thereof |
CN112955521A (en) * | 2021-01-19 | 2021-06-11 | 香港应用科技研究院有限公司 | Thermal conditioning module for cooling energy packs |
CN112955521B (en) * | 2021-01-19 | 2022-05-17 | 香港应用科技研究院有限公司 | Thermal conditioning module for cooling energy packs |
US12009494B2 (en) | 2021-01-19 | 2024-06-11 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Thermal regulatory modules useful for cooling energy packs |
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Effective date of registration: 20230815 Address after: Building 2, No. 18 Lishi Hutong, Dongcheng District, Beijing 100010 Patentee after: Zhonglv Zhongke energy storage Co.,Ltd. Address before: No. 29 East Zhongguancun Road, Haidian District, Beijing 100190 Patentee before: Technical Institute of Physics and Chemistry Chinese Academy of Sciences |