Study on the Thermal Insulation Effect and Experiment of Plastic Film on the Lateral Facades of Multi-span Greenhouse in Winter in Urumqi

In order to improve the thermal insulation performance of multi-span greenhouse and verify the temperature and light properties of thermal insulation film equipped on the lateral facades of multi-span greenhouse, an experimental greenhouse is designed, in which the shed plastic film used for solar greenhouse covering is hanging on the lateral facades as lateral insulation measure of multi-span greenhouse.The experimental results show that the average temperature of greenhouse with thermal insulation measures is 2.9°C higher than that of the greenhouse without thermal insulation measures during the test period, the average temperatures of greenhouse with thermal insulation measures in daytime and at night on sunny days are 2.2°C and 3.5°C respectively higher than that of greenhouse without thermal insulation measures, while the temperature of greenhouse with thermal insulation measures on cloudy days is always higher than that of greenhouse without thermal insulation measures. The light intensity of greenhouse with thermal insulation measures on the lateral facades is 6.71% lower than that without thermal insulation measures.