Evaporative Cooling System Sketch

The basis of any evaporative cooling system is the evaporation of water into an airstream.

Evaporative cooling system sketch.

The most common way of accomplishing evaporative cooling in a greenhouse is with a fan and pad system figure 1. When operating an evaporative cooler windows are opened part way to allow warm indoor air to escape as it is replaced by cooled air. Two evaporative cooling systems are commonly used in greenhouses. An evaporative cooling system takes basic evaporation and automates it to efficiently lower the temperature of the air in your home.

Note that swamp coolers can be considered stand alone evaporative cooling systems but otherwise operate similarly as pad and fan systems. Evaporative cooling differs from typical air conditioning systems which use vapor compression or absorption refrigeration cycles. Pad and fan systems are part of a greenhouse s mechanical ventilation system. Evaporative cooling systems are characterised by low energy use compared with refrigeration cooling.

They produce cool and humid air and are. Typical fan and pad greenhouse arrangement. The fan draws dry hot air into the machine and across the cooler pads these thick pads absorb water from the reservoir and. For more information on evaporative cooling systems and how they work please visit http cosaf co uk or http cosaf ae.

Evaporative coolers cost about one half as much to install as central air conditioners and use about one quarter as. In general the machine will consist of a fan a thick pad a water reservoir and some additional controls for fine tuning the results. An evaporative cooling system consists of an intake chamber filter s supply fan direct contact or indirect contact heat exchanger exhaust fan water sprays re circulating water pump and water sump. The coolest area of the greenhouse is adjacent to the evaporative cooling pads.