Part No. 4801-5120 Rev. 1-2020
Mega-Cool System
Page 4 of 48
Tools Required
TOOLS REQUIRED
PVC piping glue
PVC piping cutter
PVC Pipe Cleaner
Circular Saw
Ladder 8’ Step
Tape Measure
Level
Chalk line
Wrench
Hammer
Hammer
Hammer
Phillip Head Screwdriver and/or bit for Drill
Nut Driver Set
Purpose of Evaporative Cooling
Evaporative cooling is a time tested efficient means of reducing air temperature
by drawing incoming air across a wetted surface. Evaporative cooling is
especially useful in situations where air inside the space is not re-circulated.
The efficiency and the cooling ability evaporative cooling possesses makes it a
wise choice for agricultural and horticultural buildings.
Theory
Evaporative cooling needs only two factors to work, water and moving air.
When air is moved across a wet surface, some of the water on the surface
evaporates. This action draws heat from the moving air, cooling and
humidifying the incoming air.
Description of System
Mega-Cool is the brand name of evaporative cooling system from Cumberland.
Each Mega-Cool system uses a continuous bank of evaporative cooling pads and
water to cool incoming air.
Mega-Cool evaporative cooling systems may be broken down into individual
groups. The basic groups are defined by their collective purposes. These
groups are: reservoir, fill line, in-line pump kit, sump pump kit, supply line,
spray line, and pads.
Reservoir
The reservoir serves a dual purpose. It holds the water supply for the
pump, and collects the water returning from the pads. It consists of
eight inch (20.3 cm ) PVC piping.
Fill line
The fill line supplies make up water to the system.
In-Line Pump kit
The pump kit includes the In-Line Pump, shutoff valves, bleed off
line, and strainer. This section provides the force for moving water
from the reservoir to the supply line.
Supply line
The supply line carries water from the In-Line Pump kit to the spray
line. This section is made of one and a half inch (3.8 cm) PVC
piping and various fittings.
Spray line
The spray line is constructed of 1-1/4" inch (3.2 cm) PVC pipe with
holes drilled in the line along the top. These holes are drilled a
certain distance apart depending on the size of pad you have. When
water is pumped to the spray line, water shoots out the holes onto the
distribution plate, then drops into the pads.
Pads
Constructed of cellulose fibers formed into corrugated blocks. When
water flows down the system, and air is drawn through the pads, the
air evaporates some of the water, becoming much cooler. When the
water reaches the bottom of the pads, it drips back into the reservoir.
Air Flow
Air Flow
