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Photothermal power generation system

A photothermal power generation and photothermal technology, applied in solar thermal power generation, solar heating system, solar thermal storage, etc., can solve the problems of being easily affected by weather factors, low energy utilization rate, unstable output, etc., to improve power generation efficiency , The effect of reducing investment cost and reducing capacity

Pending Publication Date: 2018-11-23
四川协鑫电力工程设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a photothermal power generation system to solve the problems of low energy utilization rate, easy to be affected by weather factors, unstable output and high construction cost in the prior art. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 As shown, it is a schematic structural view of the unconnected burner 7 of the present invention, including: an air compressor 1 , a photothermal thermal storage device 4 , a photothermal-air heat exchanger 5 , an air expander 2 and a generator 3 .

[0025] The air compressor 1, the air expander 2 and the generator 3 adopt a coaxial design structure, and the three operate synchronously.

[0026] The heat medium pipeline of the photothermal-air heat exchanger 5 communicates with the thermal storage medium circulation pipeline of the photothermal heat storage device 4; the input port of the cold medium pipeline of the photothermal-air heat exchanger 5 is connected to The exhaust port of the air compressor 1 is connected, and the output port of the cold medium pipeline is connected with the air inlet of the air expander 2 through the second air valve.

[0027] The photothermal heat storage device 4 converts the energy of sunlight into heat energy, and the he...

Embodiment 2

[0032] like figure 2 As shown, the difference between the second embodiment and the first embodiment is that a burner 7 is also connected between the air compressor 1 and the air expander 2, and the air inlet of the burner 7 passes through a one-way air valve. It communicates with the exhaust port of the air compressor 1, and the gas discharge port of the burner 7 communicates with the air inlet of the air expander 2 through the second check valve, and the fuel supply port of the burner 7 is connected with the fuel supply system .

[0033] Part of the high-pressure air output by the air compressor 1 is output to the photothermal-air heat exchanger 5 to exchange heat with the heat storage medium, and the other part is output to the burner 7 to be mixed with the fuel in the burner 7 to generate high-temperature gas; The high-temperature gas output from the burner 7 is mixed with the high-temperature and high-pressure air output from the photothermal-air heat exchanger 5, and t...

Embodiment 3

[0036] like image 3 As shown, the difference between the third embodiment and the first embodiment is that a burner 7 is connected between the photothermal-air heat exchanger 5 and the air expander 2, and the air inlet of the burner 7 is connected with the photothermal - The output port of the cold medium pipeline of the air heat exchanger 5 is connected, the gas discharge port of the burner 7 is connected with the air inlet of the air expander 2, and the fuel supply port of the burner 7 is connected to the fuel supply system.

[0037] The high-pressure air output from the air compressor 1 is output to the photothermal-air heat exchanger 5 to exchange heat with the heat storage medium, and the high-temperature and high-pressure air output from the photothermal-air heat exchanger 5 is input to the burner 7 to communicate with the heat storage medium in the burner 7. The fuels are mixed and burned to generate high-temperature and high-pressure mixed gas, which is output to the ...

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Abstract

The invention discloses a photothermal power generation system, which comprises an air compressor, a photothermal heat storage device, a photothermal air heat exchanger, an air expander and a generator. The air compressor, the air expander and the generator are coaxially connected. The heat medium pipe of the photothermal heat exchanger is connected with the heat storage medium circulation pipe ofthe photothermal heat storage device; an inlet of the cold medium pipe of the photothermal air heat exchanger and an exhaust port of the air compressor are connected, and an output port of the cold medium pipe is connected with an air inlet of the air expander; the air is pressurized by the air compressor for further heat exchange with the photothermal heat exchanger to form high temperature andhigh pressure air, which drives the operation of air expander and coaxial air compressor, and at the same time drives coaxial generator to generate electricity. The photothermal power generation system adopts a Breton cycle with air as a medium, which can greatly improve the power generation efficiency.

Description

technical field [0001] The invention relates to a photothermal power generation system. Background technique [0002] At present, the system flow of photothermal power generation is generally that the photothermal heat storage device collects the energy of sunlight and heats the molten salt. The high-temperature molten salt heats the water in the waste heat boiler to generate superheated steam. The superheated steam enters the steam turbine to generate power. This process generates electricity. The thermodynamic cycle is a Rankine cycle with water as the working fluid. [0003] Its disadvantages are: the thermal efficiency of the Rankine cycle is low, the energy utilization rate is not high, and the heat waste is serious; when the weather is bad and the light is insufficient, in order to ensure the stable and continuous output of the power station, it is usually necessary to configure a large capacity of solar thermal storage devices, leading to higher construction costs of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G6/06F01D15/08F01D15/10F24S20/40F24S60/30
CPCF01D15/08F01D15/10F03G6/06Y02E10/46Y02E20/14
Inventor 程兰王富华詹海波
Owner 四川协鑫电力工程设计有限公司
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