Refraction and condensation type flat-plate solar collector

Abstract

The invention discloses a refraction and condensation type flat-plate solar collector and belongs to the field of solar medium and high temperature applications. The energy flux density of the solar collector is enhanced by converging sunlight through a giant Fresnel line focal lens, high temperature is produced on a focus line, heat is efficiently collected through an existing solar vacuum heat collection tube, and a U-shaped metal tube is led into a heat-conducting medium to exchange the high temperature for heat energy and lead out the heat energy. In this way, a high-temperature heat source is provided for the life and industrial fields of heating, air conditioning, spinning and weaving, printing and dyeing, paper making, rubber, sea water desalination, sewage purification and the like. The multiple refraction and condensation type flat-plate solar collectors form arrays to form a high-power solar steam boiler which can allow a thermal power generation unit to generate power.

Description

technical field [0001] The invention is a kind of refraction and concentrating flat solar heat collector, which belongs to the field of medium and high temperature application of solar energy. It gathers sunlight to increase its energy flux density, generates high temperature on the focal line, and converts it through the existing vacuum heat collection tube. The heat is efficiently collected, exchanged and exported to provide a green and environmentally friendly high-temperature heat source for heating, air conditioning, textiles, printing and dyeing, papermaking, rubber, seawater desalination, sewage purification and other domestic and industrial fields. Background technique [0002] For a long time, in the practice of solar energy application, human beings have been limited by the original collection mode of 1:1, and it is difficult to break through the limitation of the natural energy flow density of solar energy, and the energy obtained per unit area is limited. Therefor...

AI Technical Summary

Problems solved by technology

However, the reflective concentrator is a "front focus" optical converging system, and its focal point or focal line is between the equipment and the light source (the focal point is at the front end of the concentrator), so that the heat collector needs to be "suspended in the air", which means It makes the structure of the collector more difficult, and the collector is inconvenient to keep warm

Therefore, the cost and volume of reflective concentrators are high, and the cost performance is not high. For a long time, its application has only stayed in large-scale demonstration projects of governments in various countries, and the use of small areas is not worth the loss.

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