A greenhouse solar heat collection system and method

Abstract

The invention discloses a greenhouse solar heat collection system and method, which relate to the field of solar energy and include glass plates, pipes and casing components; a double-layer glass plate with a certain inclination angle is arranged above the greenhouse, and working fluid flows from between the glass plates to the The pipeline is respectively connected to the heat exchange sleeve assembly and the external pipe of the greenhouse through a three-way valve; the heat exchange sleeve assembly is arranged in the soil. The invention can save a large amount of land area, has good light transmittance, and does not affect the photosynthesis of crops while collecting solar heat; at the same time, the heat exchange of the working fluid to the soil can be realized by setting the heat exchange sleeve assembly, which fully utilizes the Solar energy resources reduce the operating costs of the greenhouse in summer and winter.

Description

technical field [0001] The invention belongs to the field of solar energy utilization, and in particular relates to a solar heat collection system and method arranged on the roof of a greenhouse. Background technique [0002] In recent years, the ways of using solar energy in greenhouses have gradually increased. Among them, the first way is: arrange in the open space outside the greenhouse, occupy a large amount of land area, and increase the distance of heat source transmission; the second way is: use the heat-absorbing surface coated with blue titanium film Solar vacuum tube collectors are arranged on the back roof, which is easy to damage the waterproofing of the back wall and the back roof. At the same time, it exceeds the height of the greenhouse roof ridge, which affects the light transmittance of the greenhouse and causes shading, widens the distance between the greenhouses, and reduces land use. At the same time, the tube explosion will occur; the third method is: u...

AI Technical Summary

Problems solved by technology

An average depth of 30-60 cm needs to be dug under the greenhouse. Once the greenhouse covers a large area, the construction earthwork of the greenhouse will be doubled and the project cost will be increased.

In addition, if the pipeline system fails later, the entire pipeline system needs to be excavated for repair and replacement, and repeated land construction projects are time-consuming, laborious and money-consuming, which is not conducive to the promotion of ground source heat pump technology in greenhouses

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