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Compressed air heat regenerative system with function of energy and heat storage

A compressed air energy storage and heat recovery system technology, which is applied in steam engine devices, components of pumping devices for elastic fluids, non-variable pumps, etc., can solve the problem that compressors and expanders cannot fully adapt to the change of working conditions , large temperature changes, etc., to achieve the effect of improving adjustment flexibility, reducing losses, and improving conversion efficiency

Pending Publication Date: 2018-08-10
GUIZHOU POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the system utilizes the regulating characteristics of the regulating valve to set a heat storage temperature control valve at the outlet of the cold side of each compressor heat storage heat exchanger to control the pressure of compressed air on the cold side of the heat exchanger during the energy storage stage The cooling medium flow rate is high, and the heat recovery temperature control valve is installed at the hot side outlet of the heat recovery heat exchanger of the expander, so that the heat energy can be reasonably distributed in each heat exchanger of the expander, effectively improving the power-to-power conversion efficiency of compressed air energy storage, and increasing the compressed air The practicability of the energy storage power generation system to solve the problem that the temperature of the compressor outlet and the expander inlet varies greatly during the compressed air energy storage operation, and the compressor and expander cannot fully adapt to the change of working conditions in the whole process

Method used

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  • Compressed air heat regenerative system with function of energy and heat storage
  • Compressed air heat regenerative system with function of energy and heat storage
  • Compressed air heat regenerative system with function of energy and heat storage

Examples

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Embodiment 1

[0027] refer to figure 1 and figure 2 , a compressed air energy storage, heat storage and recovery system of the present invention includes a compressed air storage tank, a heat storage heat exchanger and a heat recovery heat exchanger, the outlet of the compressed air storage tank is connected to the intake valve 1, and the The air intake valve 1 is connected to the cold side inlet of the rightmost recuperation heat exchanger, and the hot side outlet of the recuperation heat exchanger is connected to the heat recovery temperature control valve 3, and the heat recovery temperature control valve 3 is connected to the cold storage The tank inlet is connected, the hot side inlet of the recuperator is connected to the outlet of the heat storage tank, the cold side outlet of the recuperator is connected to the air inlet of the expander, except for the leftmost expander The exhaust port of the other expanders is connected to the cold side inlet of the recuperation heat exchanger, ...

Embodiment 2

[0038] refer to figure 1 and image 3 , a compressed air energy storage, heat storage and recovery system of the present invention includes a compressed air storage tank, a heat storage heat exchanger and a heat recovery heat exchanger, the outlet of the compressed air storage tank is connected to the intake valve 1, and the The air intake valve 1 is connected to the cold side inlet of the rightmost recuperator heat exchanger, and the hot side outlet of the recuperator heat exchanger is connected to the heat recovery temperature control valve 3, and the heat recovery temperature control valve 3 is connected to the cold storage The tank inlet is connected, the hot side inlet of the recuperation heat exchanger is connected to the outlet of the heat storage tank, the cold side outlet of the recuperation heat exchanger is connected to the air inlet of the expander, except for the leftmost expander The exhaust port of the other expanders is connected to the cold side inlet of the ...

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Abstract

The invention discloses a compressed air heat regenerative system with the function of energy storage and heat storage. The heat regenerative system comprises a compressed air storage tank, a thermalstorage heat exchanger and a regenerative heat exchanger; an outlet of the compressed air storage tank is connected to an inlet valve connected to a cold side inlet of the rightmost regenerative heatexchanger; a hot side outlet of the regenerative heat exchanger is connected to a regenerative temperature control valve connected to an inlet of a cold storage tank; and a cold side outlet of the regenerative heat exchanger is connected to a heat storage temperature control valve connected to an inlet of a heat storage tank. Heat generated by an air compressor during air compression is taken awaythrough regulation of the thermal storage heat exchanger in the heat storage phase, and the purpose of reducing the outlet temperature of the air compressor is achieved; the intake air temperature and exhaust temperature of an expansion machine are adjusted through regulation of the regenerative temperature control valve in the regenerative phase, and the overall efficiency of all expansion machines is improved.

Description

technical field [0001] The invention relates to the field of compressed air energy storage, in particular to a field of utilizing a temperature control valve to realize optimal configuration of heat storage / regeneration of a compressed air energy storage power generation system. Background technique [0002] Compressed air energy storage is currently a more advanced energy storage method in energy storage technology. Its main feature is that it consumes power storage capacity during low power consumption, and drives the generator to generate electricity through the expander during peak power consumption. It has a large scale of energy storage. , long storage period, and less environmental pollution are considered to be one of the most promising large-scale power storage technologies. [0003] The use of compressed air energy storage system can make better use of energy, make the energy distributed reasonably, and be environmentally friendly, but because the pressure in the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D15/10F04D29/58F04D25/06F01K27/00F01K25/00
CPCF01D15/10F01K25/00F01K27/00F04D25/06F04D29/582
Inventor 张世海文贤馗邓彤天马新惠钟晶亮吴密
Owner GUIZHOU POWER GRID CO LTD