Fruits Irrigation Tunnel Multi Span Plastic Film Greenhouse

1. Heating technology

Common greenhouse heating methods include brewing heating, electric heating, plumbing heating, warm air heating, solar storage system heating, etc. In the current era of energy saving and emission reduction, the most respected method is to use solar storage heating system. The heat energy intercepted by the high temperature air that appears in the upper part of the shed during sunshine is stored underground to increase the ground temperature. When the night temperature is lower than the ground temperature, the energy stored in the soil can be dissipated into the air. Through the use of solar storage system, the ground temperature in the greenhouse can be increased by 1~2℃.

2. Cooling technology

1. Ventilation and cooling

The ventilation and cooling operation is very simple, that is, open the ventilation opening or open the ventilation fan to cool the exhaust.

2. Shading and cooling

In summer, the temperature is relatively high and the sunlight is strong. You can use old film or old film to add grass curtains, shading nets, etc. to cover and cool down.

3. Spray cooling in the house

One is spraying upward from the bottom of the greenhouse side, and the other is spraying downward from the upper part of the greenhouse, which should be selected according to the types of plants.

4. Fan water curtain cooling system

Friends with good economic conditions can use the fan water curtain cooling system. The cooling process is completed in the core paper pad. There is a thin water film on the corrugated fiber surface. When the outdoor dry hot air is pumped by the fan When sucked through the paper, the water on the water film will absorb the heat of the air and evaporate into steam, so that the cool and humid air after treatment enters the room, and the room can immediately drop by 5~10℃. Effect.

3. Insulation technology

1. The internal insulation of the flat roof in the multi-span greenhouse

This form of heat preservation is what we often call inner heat preservation. It is a kind of lightweight space cotton heat preservation quilt parallel to the inner sunshade. The heat preservation quilt has the characteristics of rain and sun protection, and the service life is about five years. The opening and closing method is to use the motor and the rack and pinion drive to open and close.

2. Side insulation quilt around the multi-span greenhouse

It means to install a layer of lightweight space cotton thermal insulation quilt or a layer of thermal insulation curtain on the surrounding walls of the multi-span greenhouse, roll the thermal insulation cotton or curtain from top to bottom for thermal insulation at night, and put it away during the day.

3. Add additional small arches around the film multi-span greenhouse for heat preservation

This kind of thermal insulation style is most commonly used in the style of the film multi-span greenhouse. A small curved arch is used to prop up an extra small space around the greenhouse. The bottom of the normal small arch is about 1.5 meters from the wall. The arch can be used. It is made of Φ32*2.0 round pipe, and the arch spacing is 1 meter. At the same time, a film roll is installed on the arch surface, which can roll up the film without affecting the side ventilation or the use of the fan water curtain.