What factors affect the multi-span greenhouse?
The application range of multi-span industrial greenhouses is becoming wider and wider, and there are more and more construction application cases of greenhouses.
Sunlight is the main source of vegetable products. The higher the light transmittance of the greenhouse, the more photosynthesis of the plants in the greenhouse, and the better the yield of vegetables. The main factors affecting the light transmittance of the multi-span greenhouse are the transmittance of the covering material and the shelter of the greenhouse frame. With the change of seasons, the transmittance of glass varies between 70 and 80 with the change of the sun's altitude angle.
In order to improve the thermal insulation effect of the greenhouse, double-layer hollow glass is used to cover the maintenance materials in the north. The overall thermal insulation performance of the greenhouse can be evaluated by the temperature difference between indoor and outdoor without night heating in winter. Under the condition of single-layer covering, the indoor and outdoor temperature difference can be maintained in the greenhouse of about 2℃～5℃, and the temperature difference between the inside and outside can be increased to 4～8℃ by adding insulation curtains and other insulation measures. The bearing capacity of the structure is directly related to the recurrence time of the heavy wind and snow load.
