Cold and heat combined solar heat complementation combined cycle integrated system

A technology of solar thermal and combined cycle, which is applied in the directions of solar thermal power generation, mechanical power generation by solar energy, mechanism for generating mechanical power, etc., which can solve the problems of rising compressor inlet temperature, reducing system efficiency and output, and low solar energy utilization rate, etc. problems, to achieve the effect of reducing adverse effects, increasing annual utilization rate, and improving photoelectric conversion efficiency

Inactive Publication Date: 2018-09-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solar photoelectric conversion efficiency and solar energy utilization rate of the traditional ISCC system are not high, and the increase of the inlet temperature of the gas turbine compressor will greatly reduce the efficiency and output of the system

Method used

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  • Cold and heat combined solar heat complementation combined cycle integrated system
  • Cold and heat combined solar heat complementation combined cycle integrated system
  • Cold and heat combined solar heat complementation combined cycle integrated system

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Experimental program
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Effect test

Embodiment

[0017] Choose the meteorological data of Jiuquan, Gansu as the design conditions, calculate the thermodynamic performance of the two systems at the summer solstice design point and the whole year, and explain the effect of the present invention as follows.

[0018] In order to accurately compare the thermodynamic performance of the two systems, the solar energy production in the integrated system is defined as:

[0019]

[0020] where P ISCC — Electricity production based on new integrated solar system (ISCC), MW;

[0021] P GTCC - Electricity production based on the basic combined cycle system (GTCC), MW;

[0022] f fuel,ISCC — new system (ISCC) fuel volume, kg / s;

[0023] f fuel,GTCC - basic system (GTCC) fuel quantity, kg / s.

[0024] The photoelectric conversion rate of solar energy is:

[0025]

[0026] where Q 辐射 —The amount of solar radiation received by the solar collector mirror site, MW.

[0027] The cycle efficiency of the integrated system is:

[002...

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Abstract

The invention discloses a cold and heat combined solar heat complementation combined cycle integrated system and belongs to the technical field of solar heat power generation. The integrated system ischaracterized in a trough heat collector of a solar heat collection mirror field is connected with a refrigerator and a waste heat boiler of a combined cycle system; the refrigerator is connected with an air heat exchanger; a medium-pressure superheater is connected with a reheater and a steam turbine high pressure cylinder; an output of the steam turbine high pressure cylinder is connected witha high-pressure superheater and the air heat exchanger; and the cold and heat combined solar heat complementation combined cycle integrated system is formed. Solar energy is integrated into the refrigerator and the waste heat boiler at the same time; an adverse effect of ambient temperature rising on the performance of the system is reduced; the photon to current conversion efficiency of the system is improved; and an annum utilization ratio of the solar energy is greatly increased by adjusting an area proportion of the solar heat collection mirror field for two parts.

Description

technical field [0001] The invention belongs to the technical field of solar thermal power generation, and in particular relates to a solar thermal complementary combined cycle integrated system combining cooling and heating. Background technique [0002] Affected by global environmental and energy issues in recent years, solar thermal power generation has entered a new period of rapid development. Since the 1980s, a series of solar thermal power plants have been built and operated around the world, but independent solar thermal power generation systems exist High cost of power generation, unstable operation, low photoelectric conversion efficiency and other issues. Integrating solar thermal into a conventional power generation system for thermal complementary power generation of solar energy and traditional fossil energy can effectively solve technical bottlenecks such as unstable utilization of solar energy and high power generation costs, and at the same time improve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G6/06F01D15/10F01K13/00F01K23/02
CPCF01D15/10F01K13/00F01K23/02F03G6/067F03G6/068Y02E10/46
Inventor 段立强吕志鹏刘玉磊王振
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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