Evaporative Cooling System Sketch

The fan draws dry hot air into the machine and across the cooler pads these thick pads absorb water from the reservoir and.

Evaporative cooling system sketch.

Pad and fan systems are part of a greenhouse s mechanical ventilation system. Two evaporative cooling systems are commonly used in greenhouses. An evaporative cooler also swamp cooler swamp box desert cooler and wet air cooler is a device that cools air through the evaporation of water. The most common way of accomplishing evaporative cooling in a greenhouse is with a fan and pad system figure 1.

Evaporative coolers cost about one half as much to install as central air conditioners and use about one quarter as. When operating an evaporative cooler windows are opened part way to allow warm indoor air to escape as it is replaced by cooled air. The coolest area of the greenhouse is adjacent to the evaporative cooling pads. Typical fan and pad greenhouse arrangement.

In general the machine will consist of a fan a thick pad a water reservoir and some additional controls for fine tuning the results. Evaporative cooling systems are characterised by low energy use compared with refrigeration cooling. The basis of any evaporative cooling system is the evaporation of water into an airstream. Note that swamp coolers can be considered stand alone evaporative cooling systems but otherwise operate similarly as pad and fan systems.

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. They produce cool and humid air and are. Evaporative cooling uses the fact that water will absorb a relatively large amount of heat in order to evaporate. Unlike central air conditioning systems that recirculate the same air evaporative coolers provide a steady stream of fresh air into the house.