Optical system for solar thermal power generation

Abstract

The invention relates to an optical system for solar thermal power generation. The optical system for the solar thermal power generation comprises a compound parabolic condenser, planar mirrors, a bottom parabolic condenser, a solar high-temperature heat collector, connectors, high-temperature vacuum thermal insulation materials. One ends of the two planar mirrors are symmetrically connected with the position of an opening of the bottom of compound parabolic condenser with a small preset slant angle, and the other ends of the two planar mirrors are connected with the bottom parabolic condenser through the connectors. The solar energy high-temperature heat collector is arranged in the center of a cavity formed by the two planar mirrors and the bottom parabolic condenser in an enclosing mode. The peripheries of the planar mirrors and the bottom parabolic condenser are wrapped up by the high-temperature vacuum thermal insulation materials which are used for heat insulation. Due to the fact that various optical components are used for gathering light in a combined mode and the solar thermal collector is arranged inside a cavity body, shade cannot be produced when the light is gathered, and the solar thermal collector can be fully used. Besides, loss of a large amount of heat is avoided when the solar thermal collector is arranged outside. The optical system for the solar thermal power generation is a high-efficient optical heat-gathering system.

Description

technical field [0001] The invention provides a high-efficiency solar heat collection optical system, which is suitable for all systems utilizing solar heat energy, and is especially suitable for solar trough power generation systems. Background technique [0002] Because of its green, environmental protection, pollution-free, renewable and other characteristics, solar energy has become an energy source that modern people vigorously research and develop. The use of solar energy for large-scale centralized power generation will contribute to the sustainable development and change of my country's electric power. Coal is the main fuel The power generation structure will play a major role, and the use of solar energy is an important energy basis for the sustainable development of the power industry. [0003] At present, there are mainly three types of solar power generation systems: trough type, tower type and dish type. Compared with the other two, the trough type solar thermal ...

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Problems solved by technology

[0004] The invention provides an optical system for solar thermal power generation, which solves the problem of shadow formation at the bottom of the heat collector and the high requirements of the device on the sun tracking accuracy and the ideal degree of the paraboloid. If the reflected light cannot reach the concentrator, it will form invalid reflections.

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