Working medium heating device of gas turbine solar power generation system

Abstract

The invention discloses a working medium heating device of a gas turbine solar power generation system. The device comprises a cold air passageway (5), a heat collecting cavity (7) and a hot air channel (26) which are communicated sequentially; the hot air channel (26) is formed by connecting an inner shell (28) at the front side and a heat compensation section (13) at the rear side; and the device also comprises a combustor (20) which heats primary heating air (27) in the heat compensation section (13) when the solar energy is insufficient, and the combustor (20) is arranged at the heat compensation section (13). By adopting the working medium heating device of the structure, the solar energy and other gaseous fuel materials can be combined to be utilized according to the direct radiation condition of solar energy, the primary heating air of the heat compensation section is subjected to fuel combustion compensation when the solar energy is insufficient; and because the combustor is simple in structure and lower in manufacturing cost, thus on the premise of low cost, the working medium heating device can be used for maintaining the stability and adjustability in outputting electricity externally by the power generation system when the solar energy is insufficient.

Description

technical field [0001] The invention relates to the technical field of solar thermal power generation, in particular to a working medium heating device of a gas turbine solar power generation system. Background technique [0002] Solar energy is one of the new energy sources with the most development prospects and the best solution to the growing energy demand of future social development. It has the characteristics of unlimited reserves, universal distribution, clean utilization and economical efficiency. Solar thermal power generation has the characteristics of good adaptability to grid load, high photoelectric conversion efficiency, easy scale effect, more environmentally friendly manufacturing process of consumables, and better power adjustability. It is an important development direction for future solar power generation utilization. [0003] According to different concentrating methods, solar thermal power generation mainly includes several power generation systems suc...

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Problems solved by technology

[0005] The function of the working fluid heating device is to convert solar energy into thermal energy and transfer it to the air. At present, there are still the following key issues to be solved: 1) How to solve the problem of insufficient or unstable solar energy, such as rainy days, no solar energy or insufficient solar energy in the morning and evening, The short-term occlusion of the cloud layer causes the problem of unstable operation of the power generation system, thereby improving the stability and adjustability of the external output current of the solar power station; 2) How to make the solar energy efficiently absorbed by the heat-absorbing components, convert it into heat energy, and quickly convert the heat energy , Efficiently transferred to the working medium (air)

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