Heat-regenerated compressed air energy storage system

A compressed air energy storage and compressed air technology, which is applied in variable capacity pump components, liquid variable capacity machines, pump devices, etc., can solve the problems of environmental pollution, high cost, poor heat storage effect, etc., and achieve no pollution to the environment , Improve heating capacity, improve the effect of heat storage capacity

Active Publication Date: 2013-07-24
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Description
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Problems solved by technology

The energy storage system completes the conversion of electric energy-air potential energy and heat energy-electric energy. The heat energy generated by the compressed air is recovered in the existing tec

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  • Heat-regenerated compressed air energy storage system

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Embodiment Construction

[0024] Such as figure 1 As shown, the regenerative compressed air energy storage system of the present invention includes: a compressor unit 1, a gas storage device 3, a turbine generator unit 5 and a heat recovery system, and the heat recovery system includes a cooler 2, a heat storage device 6, a heat recovery system Heater 4, cooling medium storage 8 and pressurization system 7; compressor unit 1 uses electric energy to compress air into high-pressure compressed air, the inlet of gas storage device 3 is connected to the outlet of compressor unit 1, and gas storage device 3 stores compressed air The air compressed by the unit 1; the outlet of the gas storage device 3 is connected to the turbogenerator set 5 to provide compressed air for the turbogenerator set 5 to generate electricity. The cooling medium storage 8, the cooler 2, the heat storage device 6 and the regenerator 4 are sequentially connected, and the outlet of the regenerator 4 is connected to the cooling medium s...

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Abstract

The invention relates to the field of electric energy storage and discloses a heat-regenerated compressed air energy storage system. During the energy storage of the system, heat energy produced during air compression is recovered and stored by a cooler and a heat storage device by using a cooling medium; and during the energy release of the system, heat stored by the heat storage device heats compressed air through a heat regenerator, and the heated compressed air is used for the power generation of a turbine generator set. The heat storage device is pressurized by adopting a pressurizing system, so that the boiling point of the cooling medium is increased; the system is simple in structure, good in heat storage effect and low in construction cost, the power generating efficiency is increased, and the electric energy conversion ratio is increased; water is selected as the cooling medium, so that the system has the advantages of easiness in material obtaining and no environmental pollution; and meanwhile, environmental residual heat, waste heat and solar energy are adopted as heat sources which are used for preheating the compressed air, and the mode of natural gas afterburning is abandoned, so that the zero emission is realized.

Description

technical field [0001] The invention relates to the field of electric energy storage, in particular to a regenerative compressed air energy storage system. Background technique [0002] At present, the biggest problem in electric power science is the engineered storage of electric energy, and it is necessary to find an economically feasible and non-polluting storage technology. In order to solve the problem of large-scale storage of electric energy, huge manpower and financial resources have been spent, and various energy storage methods have been developed, such as battery packs, mechanical flywheels, supercapacitor stacks, superconducting magnetic storage, etc., because the efficiency is not high. , short life, inconvenient access, small energy storage capacity, high investment cost, etc., it is difficult to operate. At present, pumped storage has been widely used. According to the data in 2008, pumped storage has the largest capacity in the international energy storage m...

Claims

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Application Information

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IPC IPC(8): F04B41/02F04B39/06F01D25/10
CPCY02E60/15Y02E60/16
Inventor 薛小代王俊杰周远
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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