Although not optimal it is better than no cooling at all.
Fan and pad cooling system definition.
It contains a cellulose pad overhead water supply pipe gutter to collect excess water a sump tank pump piping and control.
The 4 or 6 inch thick pad is treated with anti rot salts stiffening and wetting agents.
Cooling pads cool by creating large amounts of surface area that are exposed to air being drawn into the greenhouse by exhaust fans.
The most commonly used evaporative cooling system used in greenhouses is the fan and pad evaporative cooling system see figures 5 5 and 5 6.
A fan and pad system uses exhaust fans to pull air through evaporative cooling pads.
Fan and pad evaporative cooling systems.
The fan and pad system has been the standard system for evaporative cooling for more than 50 years.
The most common is the fan and pad system.
The pads are held in place by component parts of the system.
Several evaporative cooling systems work well in commercial greenhouses.
Fan and pad systems consist of exhaust fans at one end of the greenhouse and a pump circulating water through and over a porous pad figure 2 installed at the opposite end of the greenhouse.
They are supplied with water from a pipe above the pads and excess water is collected in a gutter at the bottom.
Fan and pad system.
Energy efficient cooling custom designs available the pump and sump.
Note that swamp coolers can be considered stand alone evaporative cooling systems but otherwise operate similarly as pad and fan systems.
Ventilation pad and fan systems also called evaporative pad and fan systems is the most common method of cooling a greenhouse in warm weather regions.
This technique utilizes the cooling effect produced when water evaporates and cools the air as it is pulled through the pad.
Using an evaporative pad and fan requires a fan mounted opposite the evaporative pads.
Tall evaporative cooling pad system supports are required on 4 inch pad systems over 48 inch tall and 6 inch pad systems over 72 inch tall.
Pad and fan systems are part of a greenhouse s mechanical ventilation system.