Double-layer plastic film greenhouse lighting heat insulation method

Abstract

The invention discloses a double-layer plastic film greenhouse lighting heat insulation method, which is characterized in that a first layer film of a greenhouse plastic film is firstly covered, the first layer film is fixed, at first, a foam body with the diameter being 15cm and the length identical to a greenhouse body is artificially pulled up, the two ends of the foam body are fixed at a ridge part of an arch house, the highest point lines are perfectly fixed, a ridge is formed, then, eight pieces of foams are respectively and uniformly fixed at two sides of the greenhouse at equal intervals, and finally, the prepared plastic film is covered on the foam and is perfectly fixed. A left greenhouse and a right greenhouse with the double-film space being 10cm are naturally formed through isolation, a heat isolation layer is formed, and a heat insulation effect is reached. The double films are both transparent double-films, the light transmission absorption performance is good in daytime, the temperature rise is fast, the temperature can reach about 35 degrees in the daytime, cotton and grass pads are not arranged on the greenhouse, rain and snow falling on the greenhouse can fast slide down, the house body top weight increase of the house body caused by too heavy rain or snow cannot occur, so the pressing collapse risk is avoided.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and in particular relates to a method for daylighting and heat preservation of a double-layer plastic film greenhouse. Background technique [0002] In winter, the temperature in northern my country is low, and the production of vegetables and flowers is inseparable from plastic greenhouses. Often, single-layer plastic greenhouses have good lighting effects, but poor heat preservation effects cause a large temperature difference between day and night in the sheds, and it is difficult for vegetables, flowers and other plants to adapt. The conventional heat preservation method is Cover the plastic film with grass mats or cotton pads, etc., pull it up every morning, and put it down in the evening, which is labor-intensive, time-consuming, and expensive. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a double...

AI Technical Summary

Problems solved by technology

[0002] In winter, the temperature in northern my country is low, and the production of vegetables and flowers is inseparable from plastic greenhouses. Often, single-layer plastic greenhouses have good lighting effects, but poor heat preservation effects cause a large temperature difference between day and night in the sheds, and it is difficult for vegetables, flowers and other plants to adapt. The conventional heat preservation method is Cover the plastic film with grass mats or cotton cloth mats, etc., pull it up every morning and put it down in the evening, which is labor-intensive, time-consuming, and expensive. The weight of the shed itself is heavy, and the weight is even greater in rainy and snowy days, and it is easy to damage the plastic film.