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Layered cold storage device and cryogenic liquid air energy storage system using same

A cold storage device and energy storage system technology, which is applied in the direction of refrigeration and liquefaction, liquefaction, steam engine equipment, etc., can solve the problems of low storage rate of cold energy and uneven quality of cold energy, so as to improve the storage rate and avoid waste of cold energy Effect

Active Publication Date: 2016-09-07
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the low storage rate of cold energy in the cold storage device in the prior art, and when outputting cold energy, the output temperature is different and the quality of the output cold energy is uneven. defect

Method used

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  • Layered cold storage device and cryogenic liquid air energy storage system using same
  • Layered cold storage device and cryogenic liquid air energy storage system using same
  • Layered cold storage device and cryogenic liquid air energy storage system using same

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Embodiment 1

[0033] refer to figure 1 , this embodiment provides a layered cold storage device, including several cold storage devices 1, the number of cold storage devices 1 is not less than 2, and any cold storage device 1 is connected to the cold energy output end to receive the cold energy output and store the cold energy output by the end, and the adjacent storage 1 is connected in series by means of the cold delivery channel 2, so that during the cold storage process, the cold energy escaped from the previous stage cold storage 1 during the cold storage process can pass through The cold delivery channel 2 enters the cold storage device 1 of the subsequent stage, so as to pre-cool the cold storage device 1 of the subsequent stage.

[0034] The above-mentioned implementation is the core technical solution of this embodiment. Through the design of connecting the cold stores 1 in series with the help of the cold delivery channel 2, the residual cold that escapes from the previous stage c...

Embodiment 2

[0044] The difference between this embodiment and Embodiment 1 is that in this embodiment, only one of several cold storage devices 1 is used to connect to the output end of the cold energy, and during the cold storage process, the cold storage devices at all levels are sequentially stored 1, the energy release process is the same as in Example 1.

[0045] Compared with Example 1, this cold storage method still contains more cold energy in the escaped exhaust gas, but the exhaust gas discharged from the previous stage cold storage device 1 can still be used for the subsequent stage cold storage device 1. Pre-cooling, so compared with the cold storage device in the prior art, the cold storage rate can still be improved to a certain extent, and the waste of cold energy can be reduced.

Embodiment 3

[0047] The following combination image 3 Describe in detail the cryogenic liquefied air energy storage system using a layered cold storage device provided in this embodiment, the liquefied air cold storage system includes: an energy input device 4 for inputting energy into the energy storage system;

[0048] The air compression device 5 is driven by the energy input device 4 to compress gaseous air into liquid air;

[0049] Gasification device 6, gasifying the liquid air;

[0050] And, the layered cold storage device described in Embodiment 1 or 2 is used to store the cold energy generated during the gasification process of liquid air in the gasification device 6 .

[0051] The above-mentioned embodiment is the core technical solution of this embodiment. The stratified cold storage device described in Embodiment 1 or 2 is used in combination with the liquid air energy storage device. The actual working process is that the gaseous air first passes through the air compression ...

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Abstract

The invention provides a layered cold storage device and a cryogenic liquid air energy storage system using the same. The layered cold storage device comprises at least two cold storage units, the adjacent cold storage units are connected through a cold conveying passage in series, and at least one cold storage unit is collected with the cold energy output end. In the cold storage process, overflowing cold energy in the cold storage process of the former stage of cold storage unit enters the later stage of cold storage unit through the cold conveying passage and is used for pre-cooling of the later stage of cold storage unit, the tail gas released in the former stage of cold storage unit still contains certain cold energy, after pre-cooling the later stage of cold storage unit, the cold energy in the tail gas can be exchanged with cold storage media in the cold storage unit to a large extent, and therefore the cold energy storage efficiency can be greatly improved, and waste of the cold energy is avoided.

Description

technical field [0001] The invention relates to the technical field of cold energy storage and transportation, in particular to a layered cold storage device, a liquefied air cold storage system and an electric power storage and cold delivery system. Background technique [0002] Cryogenic liquefied air energy storage technology refers to the use of electric energy for compressed air during the low load period of the grid, and the high-pressure sealing of the air in abandoned mines, subsidence subsea gas storage tanks, caves, expired oil and gas wells or newly built gas storage wells. The energy storage method releases compressed air during the peak period to drive the steam turbine to generate electricity. The liquid air energy storage system has the advantages of large energy storage capacity, long energy storage period, small footprint and does not depend on geographical conditions. During energy storage, the electric energy compresses, cools and liquefies the air, and at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/00F25J5/00F01K7/02
CPCF01K7/02F25J5/00F28D20/00Y02E60/14
Inventor 王乐宋洁赵波徐桂芝邓占锋杨岑玉金翼胡晓宋鹏翔李志远梁立晓
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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