Multipurpose Plastic Cover Greenhouse For Vegetable Tomato Strawberry Pepper Eggplant

Greenhouse For Vegetable Tomato Strawberry Pepper Eggplant Garden

Introduction

Sawtooth greenhouse

According to the shape of the roof, zigzag greenhouse can be divided into three types. Because of the large ventilation area, the natural ventilation effect of zigzag greenhouse is generally better than that of arch greenhouse. According to the measurement, the natural ventilation effect of the greenhouse matches with the outdoor shading. The indoor and outdoor temperature difference can basically reach 1 ~ 3 ℃. However, the sealing effect of this kind of greenhouse skylight is often poor. It has good economic benefits in the south of China where the temperature is high in summer and not too low in winter, but it is not suitable for the hot summer and cold winter areas. When choosing zigzag greenhouse, special attention should be paid to the prevailing local wind, so that the air vent of the greenhouse is located in the downwind direction, forming a large negative pressure ventilation, and avoiding cold air backflow.

Double layer inflatable greenhouse

The double-layer inflatable greenhouse is basically the same as the traditional plastic film greenhouse, except that the covering material is double-layer inflatable film. Because of the double-layer inflatable film covering, the heat insulation performance of the greenhouse is improved by more than 30%, but the light transmittance of the greenhouse is also reduced by about 10%. It has a good economic benefit in the northern part of China where the sunshine is abundant and the temperature is low in winter. However, due to the lack of sunlight and high temperature in winter, it is difficult to make up for the energy-saving effect of double-layer inflation. The resulting losses are generally inappropriate. In the use of double-layer inflatable greenhouse, if two layers of film air are filled into the room, although the inflation temperature is high, because the indoor air is often accompanied by high temperature and humidity, this air is filled into the film room, and the outer film is cooled. Condensation is very easy to occur and dew will stay between the two layers.

Double greenhouse

The purpose of double-layer greenhouse is also to obtain the energy-saving effect of double-layer inflatable greenhouse, but the structure treatment adopts double-layer bone.
The bracket supports two layers of film respectively and eliminates the air charging fan between the two layers of film. The utility model has the advantages of saving the inflation operation cost, avoiding the condensation between the double-layer inflation membranes, and adopting the membrane roll ventilation air to open or close the two-layer inflation membranes respectively. The film can optimize the energy-saving lighting management of greenhouse, further reduce the energy consumption and cost of greenhouse. It is especially suitable for the area with insufficient light in the south.