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Method and device for indirectly promoting medium and low temperature solar heat energy grades

A solar, low-temperature technology, applied in gas turbine installations, charging systems, engine components, etc., can solve the problem of ignoring the cooling effect of turbine blades, and achieve the effect of improving efficiency and broad engineering application prospects.

Inactive Publication Date: 2011-05-18
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

In its case study, the solar heat input ratio was 18%, the net solar power generation efficiency and the system Efficiency reaches 35% and 60.7%, respectively, but this calculation ignores the cooling effect of turbine blades

Method used

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  • Method and device for indirectly promoting medium and low temperature solar heat energy grades
  • Method and device for indirectly promoting medium and low temperature solar heat energy grades
  • Method and device for indirectly promoting medium and low temperature solar heat energy grades

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Embodiment Construction

[0042]The method of the present invention realizes the indirect improvement of medium and low temperature solar thermal energy grade through fuel reforming reaction and the chemical heat recovery cycle (SOLRGT) system complementary to solar fossil fuels. The medium and low temperature solar energy is introduced into the medium and low temperature, firstly providing steam evaporation latent heat to convert into steam internal energy, and then further converting into synthetic gas chemical energy by participating in the reforming reaction, after the grade is improved, and finally realizing thermal power conversion in the gas turbine. The main equipment includes:

[0043] Low-pressure compressor: raise the air to a certain pressure;

[0044] Intercooler: to cool the air raised to a certain pressure;

[0045] High-pressure compressor: boosts the air to the highest pressure of the Brayton cycle;

[0046] Fuel compressor: Boost the fuel gas to the pressure of the reforming reactio...

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Abstract

The invention discloses a method for indirectly promoting medium and low temperature solar heat energy grades, which comprises the following steps of: introducing medium and low temperature solar heat energy in chemical regenerative cycle, converting the solar heat energy into steam internal energy by means of steam evaporation latent heat, converting the steam internal energy into synthetic gas chemical energy by reforming reaction with the participation of steam to realize grade promotion, and finally implementing heat power conversion in a combustion gas turbine system. Because of the introduction of solar energy, turbine exhaust waste heat reclamation is improved, fossil energy consumption is reduced, meanwhile, steam yield is increased, and chemical regeneration and physical regeneration benefits are increased. The solar energy heat-to-power net efficiency can reach 25 to 30 percent; and compared with the conventional chemical regenerative cycle, the efficiency is improved by 5.7 percent, the fossil energy can be saved by 20 to 30 percent, and meanwhile, CO2 emission reduction is realized. Therefore, the method has good economic efficiency and broad engineering application prospect.

Description

technical field [0001] The invention relates to a method for indirectly improving the grade of medium and low temperature solar heat energy and a chemical heat recovery cycle system (SOLRGT) proposed based on which solar energy and fossil energy are comprehensively complementary. Background technique [0002] At present, the technologies related to the present invention mainly include medium and low temperature solar energy utilization technology and utilization of chemical regenerative cycle power generation technology. The development status and system characteristics of their respective technologies are as follows: [0003] 1) Medium and low temperature solar energy utilization technology [0004] In view of the limitation of fossil energy resources and the seriousness of pollution generated in the process of utilization, the conversion and utilization of new clean energy resources (especially non-carbon energy) has become an important aspect of sustainable development. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C3/22F02C7/22
Inventor 张娜
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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