Intelligent fixed roof vents continuous PE film greenhouses are specially designed for the African market to produce year-round, with the advantage that the climate inside the greenhouse can be regulated by the cooling system.
How can the cooling system of our greenhouse be lowered to the temperature of normal plant growth?

Today Jamie from Xiamen Wellgain Greenhouse Engineering Co., Ltd. would like to shares with you an article about an economical effective cooling solutions of African intelligent fixed roof vents greenhouse for your reference.

1: External Shading System

An external shade net is a layer of netting installed 50cm or more above the top of the glasshouse parallel to the roof. It is the most direct way of cooling by blocking the sunlight directly outside.
The design focus of the shade net must be higher than 50cm above the roof in order to achieve the best effect and facilitate the flow of airflow in the lower part of the greenhouse.
This reduces the amount of solar radiation and thus heat entering the greenhouse.
The effectiveness depends on the type of shading material used and the percentage of light it blocks, to the best of our knowledge, external shading can reduce internal temperatures by about 5 ℃ ~ 7 ℃(FYI) depending on the intensity of the shading.
Greenhouse in the tropical regions, the indoor temperature is generally higher than the outdoor air temperature 4 ℃ ~ 6 ℃(just for reference).

Through the use of external shading screen system, the temperature inside the greenhouse can be lower than the outdoor temperature at the same time 1 ℃ (just for reference).

2: High pressure fogging system

High-pressure fogging machine cooling principle is to use the principle of evaporation and heat absorption is through high-pressure water beads into 0.165mm diameter spray, through evaporation to take away heat.
This system uses high-pressure pumps to create a fine mist or fog of water droplets that evaporate quickly. The evaporation process absorbs heat from the air, thus cooling the environment. The reduction in temperature due to a fogging system can vary greatly depending on the external temperature and humidity levels, but reductions of 3 ℃ ~ 6 ℃(just for reference) are common, with greater reductions possible under ideal conditions.
Combining an external shading system with a high-pressure fogging system in a greenhouse can be highly effective in controlling temperatures, especially in a tropical climate like that in Africa regions which the humidity is not high.
The humidity in the greenhouse may reach 95% or more after running of high pressure spraying, but after 1 hour to 2 hours, the humidity in the greenhouse will be reduced back to the original humidity(just for reference).