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Energy storage and power generation integration system using wind energy liquefied air and solar heating

A technology of liquefied air and power generation system, which is applied in the integrated system of energy storage and power generation, the new integrated system of energy storage and power generation and the process field, which can solve the problems of low system efficiency and no practical value, and achieve wide application range and excellent performance. Business prospects, the effect of addressing the instability of wind energy supply

Pending Publication Date: 2018-07-17
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Japan has also actively carried out research on liquefied air energy storage technology in recent years, such as Mitsubishi and Hitachi, etc., but because the system efficiency is too low, it does not have much practical value

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  • Energy storage and power generation integration system using wind energy liquefied air and solar heating

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Embodiment Construction

[0026] The present invention is an integrated energy storage and power generation system using wind energy to liquefy air and solar heating. The system includes a wind energy liquefied air system, a liquid air power generation system and a solar heating system. The combination of these three systems achieves the purpose of the present invention. When there is wind outside, wind energy can be used as the driving energy to drive the compressor to work. The air comes out of the compressor through the surge tank to stabilize the output pressure and then enters the GM refrigerator to start liquefaction. The liquefied air is stored in the storage tank to realize In order to directly convert the wind energy into the cold energy of liquefied air for storage; during the peak period of electricity consumption, the liquid air in the cryogenic storage tank is drawn out, and after being pressurized by the cryogenic pump, the waste heat of the gas output by the full-flow screw expander is fir...

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Abstract

The invention discloses an energy storage and power generation integration system using wind energy liquefied air and solar heating. The system comprises a wind energy liquefied air system, a liquid-state air power generation system and a solar heating system. Wind energy is directly used for driving a wind turbine; clean air passes through a compressor to enter a pressure stabilizing tank; afterthe pressure is stabilized, the clean air is liquefied in a GM refrigerator; a throttle valve is used for throttling; the liquid-state air reaches a storage tank for storage; in the electricity use peak period, the liquid-state air in low-temperature storage tank is leaded out for pressurization by a low-temperature pump; the liquid-state air is firstly heated in a low-temperature heat exchanger by afterheat of output gas of an all-flow screw expander, and exchanges heat with hot water leaded out from a solar hot water tank in a high-temperature heat exchanger to become high-temperature and high-pressure gas-state air; and finally, the all-flow screw expander is used for expansion acting to drive a generator to rotationally generate electricity. The system is a novel liquefied air energy storage and power generation technology, and is free of pollution and excellent in application prospect.

Description

technical field [0001] The invention relates to an integrated system of energy storage and power generation, in particular to a novel energy storage and power generation integrated system and process utilizing wind energy to liquefy air and solar energy to heat, and belongs to the technical field of green energy. Background technique [0002] Energy security and environmental issues will be the long-term dual challenges in my country's energy field, and vigorously developing renewable energy has become one of the ways that must be adopted. At present, the technically proven feasible large-scale energy storage technologies mainly include pumped water storage, compressed air energy storage, large-capacity batteries and redox flow batteries. It can be seen that after years of development, the research and commercialization of various energy storage technologies have made important progress, and a number of demonstration projects have been built, but no energy storage method has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/17F01D15/10F24S10/30
CPCF01D15/10Y02P80/10Y02E70/30
Inventor 谢英柏薛晓东陈天张猛侯轶
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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