Fan And Pad Cooling System Definition

In this system aspen or cellulose pads are mounted in one endwall or sidewall of the greenhouse.

Fan and pad cooling system definition.

Pad and fan systems are part of a greenhouse s mechanical ventilation system. Although not optimal it is better than no cooling at all. 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. Using an evaporative pad and fan requires a fan mounted opposite the evaporative pads.

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 evaporative cooling systems. Several evaporative cooling systems work well in commercial greenhouses. The 4 or 6 inch thick pad is treated with anti rot salts stiffening and wetting agents.

A fan and pad system uses exhaust fans to pull air through evaporative cooling pads. This technique utilizes the cooling effect produced when water evaporates and cools the air as it is pulled through the pad. Energy efficient cooling custom designs available the pump and sump. The fan and pad system has been the standard system for evaporative cooling for more than 50 years.

With this type of system exhaust fans are placed in one wall of the greenhouse and pads are in the opposite wall. The pads are held in place by component parts of the system. 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. Fan and pad system.

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. Cooling pads cool by creating large amounts of surface area that are exposed to air being drawn into the greenhouse by exhaust fans. The fans exhaust air from the greehnouse and draw in fresh air through the pads. 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.