Evaporative Cooling Pads
CELdek® is made from a special high cellulose material, which is impregnated to
resist degradation. CAUTION: Do not expose to sparks or flame -- the material
is flammable when dry. GLASdek® is made from glass matt and rigidifying agents.
GLASdek® is fire rated with UL900, Class II for depths up to 12".
Wide Range of Cooling Applications
The CELdek® unique cross-fluted design of the pads induces highly turbulent mixing
of air and water for optimum heat and moisture transfer. CELdek® further enhances
this design using unequal angles in the slope of the corrugations. The 45 degree
and 15 degree corrugations are offset to continually direct the water to the air entry
side of the pad.
This results in:
- High cooling efficiency -- up to 90% in the 400-500 FPM velocity range
for a 12" depth of CELdek®...slightly higher in GLASdek®. These pads (flute size 6560/15)
contain 123 square feet of cooling surface in every cubic foot (440 square meters
per cubic meter).
- Much higher face velocity -- The natural tendency is for the air
to push the water out of the pad. Because of the unequal angle, the maximum air
velocity without water carryover is approximately 700 FPM. Most engineers design
systems for an average velocity of 550 FPM or less to allow for variance
in air distribution.
- Self-cleaning design -- Munters®, CELdek® and GLASdek® resist clogging due to
atmospheric dust or sand. When the recirculating water is turned on, especially
without air flow, the water flushes the surface with more flushing at the entering side
where debris normally accumulates. The also serves to reduce mineral build-up.
Sizes Available
CELdek® and GLASdek® evaporative cooling pads are installed side-by-side with no intermittent
joints or framing. Maximum size is: 24"D x 12"W x 72"H. The CELdek® pads can be cut
down to 3", 4", 6", 8", 12", or 18" or custom cut in depth and to any height in multiples of
12" up to 72". GLASdek® pads have a mimimum 4" depth. For taller pad walls, the media
can be stacked to a height of 12', using intermediate supports along the horizontal joints.
Water Distribution
Water flow is based on the depth of the pad. Both CELdek® and GLASdek® require 1.5
gallons per minute per square foot of horizontal surface area. For installations
having intensive evaporation and pads taller than 72 inches, an additional 10-20%
of water may be required.
Distribution Pads
Distribution pads supplied in 2" or 3" sections of cross-fluted pads with special edge
reinforcement are made to disperse the water laterally across the top of the pad. For
more information, please contact us.
Scale Control
Scale formation looks like frost and normally shows up on the air entry side of the pad.
To prevent scale formation, a bleed-off equal to 10-50% of the amount of water evaporated
may be required. The exact amount will depend on the pH and hardness of the water.
Once the bleed-off rate is established, the scale can be controlled.
Algae Control
Although algae may grow on a HumiCool evaporative cooling pad, it will not cause
deterioration or rot. But, if allowed to grow freely, in may eventually clog
the passages and inhibit the flow of air. Algae buildup is controlled
by implementing simple maintenance techniques. The program should be started early.
For more information call us.

Cool Edge
11225 Rd. 248
Porterville, CA 93257
(559)781-0395 -- Toll Free (800)782-0395 -- Fax (559)781-0396