Low-cost double-effect solar air collector

Abstract

The invention discloses a low-cost double-effect solar air collector, which comprises a light-transmitting cover plate, a water tank and a capillary net and is characterized in that a heat preservation layer matched with a casing is arranged on the inner side of the casing, one surface of the casing is provided with an opening and the other surfaces of the casing are sealed. The light-transmitting cover plate is arranged on the surface of the casing with the opening. An air supply port is arranged at the position where the casing is matched with the upper portion of the back wall of the heat preservation layer. A heat absorption device is arranged on the lower portion of the air supply port, fixed on the ball wall of the casing through a support and composed of the capillary net uniformly arranged in a concrete layer and a heat collection surface of a selective absorbing coating arranged on one surface of the concrete layer close to the light-transmitting cover plate. An air outlet is arranged at the position where the casing at the back of the heat absorption device is matched with the back wall of the heat preservation layer. An inlet and an outlet of the capillary net are respectively connected with the water tank through pipelines. The low-cost double-effect solar air collector is low in manufacture price and long in service life, meets requirements of users to the maximum limit, and has wide social benefit.

Description

technical field [0001] The invention relates to a solar air heat collector, in particular to a low-cost double-effect solar air heat collector. Background technique [0002] Energy, environment and sustainable development are the themes of the survival and development of human society in the 21st century, and the development of solar thermal utilization technology has received global attention. Due to the use of air as the heat exchange medium, the solar air collector has the advantages of no winter freezing, no corrosion and scaling, low sealing requirements and low cost. Therefore, many families around the world make solar energy suitable for their own houses. The air collector is installed and operated by itself, and many experimental results show that the effect is good. However, the use of solar air collectors for heating in buildings has the problems of overheating and heat energy waste in summer. In addition, for rural areas, the price of solar air collectors is sti...

AI Technical Summary

Problems solved by technology

However, there are problems of overheating and waste of heat energy in summer when using solar air collectors for heating in buildings

In addition, for rural areas, the price of solar air collectors is still a bit high

[0003] From the perspective of practical application and promotion, solar air collectors have not yet formed a market, which is different from problems such as promotion and application occasions, high prices, overheating in summer and waste of heat energy. no relationship

In order to solve the problem of overheating in summer, a new color-changing curtain wall solar air collector was reported in (Journal HVAC). The heat collecting surface of this device can solve the problem of overheating in summer by turning the louvers, and it also has a certain cooling effect , but to some extent heat energy is still wasted, which limits the wide application and promotion of solar air collectors

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