Greenhouse Chilled Water Cooling
Many greenhouses revert to ventilation and evaporative cooling to achieve the desired temperature. However, in warm and humid climates, it is not possible to cool down the greenhouse sufficiently with evaporative cooling. Other technology must be used, namely, active cooling. This cooling technology can be compared with air conditioning, but on a really big scale. It requires a chiller to provide the water and an air handling unit to cool and dehumidify the air.
Active cooling system in a greenhouse can be based on water cooling (this will provide chilled water with a minimal temperature of 4°C) or glycol solution (this solution can be cooled to temperatures far below 0°C!). The choice and the design will be based on the cooling demand and the energy costs.
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