Comparison of the advantages of various types of winter-type solar greenhouses and greenhouse functions

At present, winter-heated solar greenhouse according to the main wall structure distinction, the primary divided into earth wall greenhouse and brick wall greenhouse (to cover the film, insulation is the traditional greenhouse, for example, brick wall plus sun panels greenhouse is not compared), two kinds of greenhouses compared with each other, each has its own advantages and disadvantages.

Soil wall greenhouse is also called Shouguang type winter heating vegetable greenhouse, this structure is a more common structure in Shouguang local, in which the greenhouse wall using soil structure, soil can be adapted to local conditions, less to the wall material this cost. This not only reduces the overall cost of the greenhouse big, but also makes full use of the natural insulation effect of the soil. The structure has the advantages of low cost, good self-insulation effect and high cost performance.

The roof structure of the greenhouse, regardless of the use of earth walls or brick walls, is selected from the full steel frame structure. The steel frame is connected with steel cross bars or wire to play a reinforcing effect. After the scaffolding, cover the greenhouse greenhouse special film, the film has the effect of anti-drip, anti-aging. The film is covered with quilts, and then a shutter is added, and a winter warming greenhouse with earth wall structure is formed.

 

The difference between a brick-walled greenhouse and a traditional earth-walled greenhouse is that the walls are made of bricks. The earthen wall can be built directly with bricks, or the gap of about 1 meter between the walls can be reserved and filled with earth to prevent heat loss and enhance the effect of heat preservation in winter. The structure has the characteristics of high land utilization rate, wide accustomed terrain and generous and beautiful shape. Compared with the earthen wall greenhouse, the primary difference is in the structure of the wall, other construction materials are basically the same.

        The single-slope plastic greenhouse with the front slope covered by insulation at night and the east, west and north sides as the enclosure wall is collectively called heliostat. The prototype is the single-slope glass greenhouse, and the front slope is covered with plastic film instead of glass, which evolved into the pre-solar greenhouse. The characteristics of solar greenhouse are good heat preservation, low investment and energy saving, which is very suitable for China's less economically developed countryside. Daylight greenhouse is mainly composed of three parts: enclosure wall, back roof and front roof, which is referred to as the "three elements" of daylight greenhouse, of which the front roof is the full light surface of the greenhouse.

cooling pad

Solar greenhouse and what are its functions

1. Function of solar greenhouse

  The light transmission rate of energy-saving solar greenhouse is generally above 60%~80%, and the temperature difference between indoor and outdoor can be kept above 21~25℃.

2. Solar greenhouse lighting

  On the one hand, solar radiation is an important source of energy to maintain the temperature or keep the heat balance in the solar greenhouse; on the other hand, solar radiation is the light source for the photosynthetic effect of crops.

3. Solar greenhouse heat preservation

  The heat insulation of solar greenhouse is composed of two parts: heat insulation enclosure structure and movable heat insulation quilt. The insulation material on the front slope should use flexible material in order to be easily put up after sunrise and put down at sunset.


Post time: Feb-08-2023

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