Directing-plane lateral-irradiation solar energy condensation body based on total reflection

Abstract

The invention discloses a directing-plane lateral-irradiation solar energy condensation body based on total reflection, comprising an upper directing plane composed of mutually parallel jagged inclined planes made of an optically dense medium; the sawtooth angle of each parallel jagged inclined plane is a right angle; and an included angle alpha between each jagged inclined plane and the horizontal plane is a critical angle when an optically dense medium and an optically thinner medium are subjected to total reflection. The solar energy condensation body manufactured according to the principle is made of only one optical material so as to solve the technical problems that the service life of a condenser is short because a reflecting film on the back of the glass is easy to fall, the condensation efficiency is lowered because the reflecting film adsorbs light and the like. When being driven by a high-precision automatic tracking system, sunlight vertically enters a receiving inclined plane, and the shape of the condenser can be changed according to practical requirements to directly realize linear condensation or spot condensation.

Description

technical field [0001] The invention relates to the field of parallel light concentrating, in particular to a quasi-plane side-firing solar concentrator based on total reflection. technical background [0002] One of the obstacles to the promotion and application of solar energy is that the energy density is too low (1 kW / square meter), and it is one of the ways to effectively increase the solar energy density by concentrating light. However, there are specific practical problems in the application of the two basic concentrating methods of reflective and transmissive: the most commonly used method in reflective concentrators is to use the method of coating the reflective layer on the back of the glass material to realize solar energy concentration. The device has the problem that the reflective film falls off in the harsh outdoor environment; in the transmissive concentrator, the Fresnel lens is used as the concentrator to achieve sunlight concentration, but the device has a...

AI Technical Summary

Problems solved by technology

However, there are specific practical problems in the application of the two basic concentrating methods of reflective and transmissive: the most commonly used method in reflective concentrators is to use the method of coating the reflective layer on the back of the glass material to realize solar energy concentration. The device has the problem that the reflective film falls off in the harsh outdoor environment; in the transmissive concentrator, the Fresnel lens is used as the concentrator to achieve sunlight concentration, but the device has always had poor self-cleaning performance And technical problems such as easy aging, which directly affect the application and promotion

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