Back wall thermal insulation system of sunlight greenhouse

Abstract

The invention discloses a back wall thermal insulation system of a sunlight greenhouse. Fans are arranged on a back wall of the sunlight greenhouse; hot wet air in the upper space in the greenhouse enters from hot air holes, passes through the fans and finally reaches a heat storage thermal insulation chamber; hot air adsorbs more heat energy when passing through a gap of the back wall of the greenhouse and is stored; meanwhile the hot air which reaches the heat storage thermal insulation chamber is firstly contacted with cold air of the heat storage thermal insulation chamber; the temperature of the heat storage thermal insulation chamber is gradually increased; the excess hot air is discharged from a cold air hole of the heat storage thermal insulation chamber; air replacement is formed in the greenhouse; at night, the heat stored by the back wall is dissipated into the greenhouse to perform heat supplement; thus alternative heat recycling at day and night is formed. The application comprises the two aspects of old greenhouse renovation and novel reconstruction; the sunlight greenhouse performance at the northern area of China is further promoted, the upgrading is promoted, the winter utilization rate of the sunlight greenhouse is improved, and the vegetable production quality benefit is improved. The system has the advantages of simple structure, low cost, broad market application direction, improvement of economic crops and the like, so the generalization is optimistic.

Description

technical field [0001] The invention relates to the technical field of agricultural facilities, and belongs to a rear wall heat preservation system of a solar greenhouse. Background technique [0002] The solar greenhouse originated in China, meets the needs of China's agricultural development, and is a leader in the world. Sunlight is an indispensable energy source for green plants to carry out photosynthesis, and it is also the main heat source for solar greenhouses. Therefore, how to solve the lighting problem of the greenhouse, to maximize the sunlight transmitted to the interior of the greenhouse and to make effective use of it is the key technology of solar greenhouse design. [0003] In the area of ​​33-43° north latitude, the use of solar greenhouses can not only produce vegetables in cold seasons, but also create higher economic benefits and enrich producers. At the same time, it is an energy-saving and environmentally friendly low-carbon agricultural project that ...

AI Technical Summary

Problems solved by technology

At the same time of "breathing", there will be three problems. First, the excess heat in the greenhouse will be lost. Second, the growth of crops in the greenhouse will be affected under the conditions of hot and cold. The heat can not meet the purpose and requirements of the design

In the high-temperature and high-humidity environment before the "air release", germs are easy to spread and breed, and measures to reduce humidity are not conducive to the growth of crops, and the temperature and humidity contradiction cannot be resolved for a long time; Heat storage, the space between the double-layer insulation walls cannot replenish the required heat, forming a "hollow cold bridge" phenomenon

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