How to cool down a large-scale greenhouse in summer?

Due to the large area of multi span greenhouses and the formation of microclimates inside, it is difficult to remove hot indoor air and timely cooling is required. Below, we will introduce the cooling measures for summer multi span greenhouses for your reference only:

One is the natural ventilation system.

The greenhouse is mainly a Venlo type greenhouse imported from the Netherlands, with a unique skylight design that utilizes natural ventilation to cool down and allow hot air to be discharged from the top.

The second is the internal and external shading system.

The purpose of the sunshade system is to cool down in summer. The external shading system mainly refers to covering the greenhouse with a shading net, directly blocking solar radiation outside the greenhouse, effectively reducing the temperature inside the greenhouse.

The internal shading system is a shading system installed inside the greenhouse and above the crops. Using relatively light shading nets can effectively prevent direct sunlight from shining on crops and prevent crop burns. Usually, the internal shading system matches the external shading system.

Another lighter method is to spray paint on the outer wall of a glass greenhouse. The glass is relatively smooth and can be easily washed off after the hot season. In areas with strong sunlight in summer, the combination of three methods can improve the shading and cooling effect.

Wet curtain fan cooling system.

The system consists of four parts: wet curtain box, circulating water system, axial flow air and control system. The wet curtain fan forced cooling system uses the principle of water evaporation cooling to achieve the cooling purpose, and the core of the cooling system is the wet curtain of water evaporation.

The fourth is central air conditioning cooling.

The cooling method of connected greenhouses requires a large investment and is generally used for greenhouses in ecological restaurants. Ecological restaurants not only meet the growth needs of plants, but also meet the dietary needs.