Novel multipurpose solar concentration system

Abstract

The invention relates to a novel multipurpose solar concentration system which is provided with a main reflecting mirror used for tracking the sun in real time, and a light splitting mirror used for concentrating sunlight between the main reflecting mirror and the focus of the main reflecting mirror. Sunlight is divided into two parts to apply by the light splitting mirror according to a spectrum. Short wave light is reflected by the light splitting mirror and is concentrated on a photovoltaic battery to carry out photovoltaic power generation, and redundant heat is utilized to provide hot water and heat and the like; or is concentrated on a light guide pipe for lighting. Long wave light is transmitted via the light splitting mirror and is concentrated on a photo-thermal receiver, and heat is transmitted to a thermal storage device via a working medium so that heat can be extracted when heat is needed, and an electric generator is driven by a heat engine to perform photo-thermal power generation or to provide hot water and heat and the like. A dividing wavelength of long wave light and short wave light is corresponding to the wavelength determined by a forbidden bandwidth of the photovoltaic battery. Sunlight energy comprehensive utilization which integrates multiple application modes as a whole is realized so that sunlight utilization rate is enhanced.

Description

technical field [0001] The invention relates to a novel multipurpose concentrating solar energy system, which belongs to the technical field of comprehensive solar thermal utilization. Background technique [0002] Solar energy is an extremely abundant clean energy, which is environmentally friendly and inexhaustible. The total amount of solar energy received by the earth every year is more than 10,000 times the total annual energy consumed by the world. The prospect of solar energy utilization is very attractive, and it can be applied to many fields such as lighting, power generation, heating, hot water supply, refrigeration, and seawater desalination. [0003] At present, there are two main forms of solar energy utilization: solar photovoltaic power generation and photothermal power generation. [0004] Solar photovoltaic power generation refers to the technology of directly converting sunlight into electrical energy through photovoltaic cells. Since flat-panel photovolt...

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Problems solved by technology

[0007] In order to solve the problems in photovoltaic power generation and photothermal power generation systems where the full spectrum of sunlight is mixed together, the energy utilization form is single, and the energy utilization rate is not high, the purpose of this invention is to provide a new multi-purpose concentrated solar energy system , can divide the solar spectrum into two parts for application, one part of the light of the shorter band is used for lighting or photovoltaic power generation, and the excess heat is reused through the cooling system, such as providing hot water, heating, etc.; the other part is longer The light in the wavelength band is used for photothermal power generation or to provide hot water, heating, etc., which not only reduces the influence of negative factors in each application method, reduces the technical difficulty of each application method, but also realizes the protection of solar energy. The comprehensive utilization of sunlight improves the utilization rate of sunlight

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