Throttling and recooling adiabatic compressed-air energy storage system

A compressed air energy storage and heat insulation technology, which is applied to steam engine devices, engine components, machines/engines, etc., can solve the problems of system efficiency reduction, air temperature reduction, and air enthalpy reduction, so as to reduce the average storage temperature and system The effect of increased capacity and prolonged deflation time

Inactive Publication Date: 2018-03-27
TSINGHUA UNIV
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Problems solved by technology

However, in the current compressed air energy storage system, due to the throttling effect of the high-pressure air passing through the throttling regulator valve, the air temperature drops sharply, resulting in a decrease in the enthalpy of the air and converting it into cold energy. Offset by system thermal energy, resulting in reduced efficiency of the system

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  • Throttling and recooling adiabatic compressed-air energy storage system
  • Throttling and recooling adiabatic compressed-air energy storage system

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientatio...

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Abstract

The invention relates to the technical field of energy utilization, and discloses a throttling and cooling adiabatic compressed air energy storage system, including an air pipeline, which includes an air compressor, a cooler, an air storage chamber, a regenerator, and a turbine connected in sequence. Expander; heat circulation pipeline, including low-temperature heat recovery storage tank and high temperature heat recovery storage tank sequentially connected into circulation pipeline, cooler and regenerator are arranged on heat circulation pipeline; air pipeline and heat circulation pipeline pass through Cooler and regenerator heat transfer; cold accumulator, including shell and air channel, the shell is filled with cold storage medium, one end of air channel is connected with cooler and regenerator, and the other end passes through the first branch and the second branch respectively. The second branch is connected with the gas storage chamber; the second branch is provided with a throttling and pressure stabilizing valve. When deflated, the system absorbs and stores the cold energy of the throttling air through the regenerator, thereby preheating the intake air of the turbo expander; when inflating, the cold energy stored in the regenerator is used to cool the air intake of the air storage chamber, thereby increasing the air storage capacity. Chamber gas storage capacity and system capacity.

Description

technical field [0001] The invention relates to the technical field of energy utilization, in particular to an adiabatic compressed air energy storage system with throttling and cooling. Background technique [0002] Energy storage, especially electric energy storage, is of great significance to the optimization of energy structure and the regulation of power grid operation. Compressed air energy storage system is a new energy storage technology. In 1978, Germany built the world's first demonstration compressed air energy storage power station, followed by the United States, Japan and Israel. The working principle of the compressed air energy storage power generation system is similar to that of pumped water storage. When the power consumption of the power system is at a low point, the system stores energy and utilizes the surplus electricity in the system to drive the air compressor to compress the air and convert the energy into compressed air. The form is stored in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K3/14F01K7/16F01D15/08F01D25/12
CPCF01K3/14F01D15/08F01D25/12F01K7/16
Inventor 梅生伟薛小代陈来军卢强
Owner TSINGHUA UNIV
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