Compressed air heat storage system
A technology of compressed air and heat storage system, applied in heat storage equipment, indirect heat exchanger, heat exchange equipment, etc., can solve problems such as difficult to meet conditions, and achieve the effect of improving heat storage efficiency and effective heat utilization efficiency
Active Publication Date: 2019-06-14
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology
Therefore, the high-pressure air energy storage system puts forward higher requirements for the heat storage system, and it is difficult to meet the requirements simply by using conventional heat storage packed beds.
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[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0023] Such as figure 1 As shown, a compressed air thermal storage system is used to store the compression heat generated when the compressor compresses the air, and use the stored compression heat to heat the low-temperature high-pressure air entering the turbine, mainly including compressor 1, buffer tank 2. Drying filter 3, turbine 4, high-pressure heat exchanger 5, atmospheric pressure heat storage packed bed 6, heat carrier storage tank 1 7, heat carrier storage tank 2 8, compressed air storage tank 9, valves V1-V14, Pump one 11, pump two 12, temperature heat exchangers T1-T7, pressure sensors P1 and P2, and supporting control systems.
[0024] The compressor 1 is connected to the compressed air inlet and outlet on the left ...
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The invention discloses a compressed air heat storage system. The compressed air heat storage system comprises a compressor, a buffer tank, a drying filter, a turbine, a high-pressure heat exchanger,an atmospheric pressure heat storage packed bed, a heat carrier storage tank I, a heat carrier storage tank II, a compressed air storage tank, a matched valve, a pump, a temperature heat transmitter and a pressure sensor; the compressor is connected with the compressed air storage tank through the buffer tank, the drying filter and the high-pressure heat exchanger in sequence, and meanwhile, the compressed air storage tank is further connected with the turbine through the high-pressure heat exchanger; and the heat carrier storage tank I is connected with the heat carrier storage tank II through the high-pressure heat exchanger and the atmospheric pressure heat storage packed bed in sequence. According to the compressed air heat storage system, the high-pressure heat exchanger is combined with the atmospheric pressure heat storage packed bed, the transformation of the high-pressure heat transfer of the atmospheric pressure heat storage packed bed to the low-pressure heat transfer is realized, the pressure-bearing requirement of a high-pressure heat storage system for the atmospheric pressure heat storage packed bed is reduced, and the cost and risk of the atmospheric pressure heat storage packed bed are reduced.
Description
technical field [0001] The invention relates to the technical field of compressed air energy storage, in particular to a compressed air heat storage system. Background technique [0002] Compressed air energy storage technology can realize the function of "shaving peaks and filling valleys" and balancing power loads, thereby improving the stability and economy of power transmission and distribution systems. Early compressed air energy storage systems did not utilize the compression heat generated during the air compression process, and the compressed air pressure was not very high, so a huge storage space was required and the system efficiency was low. The supercritical compressed air energy storage system that has appeared in recent years can greatly improve the system energy density and system efficiency by increasing the compressed air pressure to a supercritical state and equipped with a special heat storage device. [0003] For supercritical compressed air energy stora...
Claims
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Login to View More IPC IPC(8): F28D7/10F28D20/00F28D20/02F28F1/24F28F27/00F28F27/02
CPCY02E60/14
Inventor 周盛妮张建军冯自平宋文吉韩颖
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI