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APPLICATIONS<br />
Special Applications of the <strong>REP</strong> Cooling Tower<br />
The <strong>REP</strong> Cooling Tower is designed for all air conditioning and industrial cooling applications. There are some design<br />
situations where special consideration must be given for the type and size of unit selected, such as, materials of construction,<br />
thermal performance, water quality, unit layout and local fire codes. Some of these special applications are<br />
described below.<br />
Freecooling<br />
Freecooling allows chilled water to be produced by the<br />
cooling tower without the use of a mechanical chiller<br />
during low ambient conditions. The freecooling or<br />
economizer mode of an air conditioning system is used<br />
to save $/KWH when the conditions allow the water in<br />
the tower to be cooled to “chiller” like temperatures,<br />
typically 42-45F LWT.<br />
EVAPCO’s counterflow cooling towers are well suited for<br />
free cooling applications. The counterflow fill design<br />
helps prevent ice formation with its even temperature<br />
gradient through the fill section and enclosed location<br />
blocking it from the elements. However, special caution<br />
must be taken when selecting, sizing and operating a<br />
cooling tower during normal winter or severe winter<br />
applications.<br />
Please consult EVAPCO’s Engineering Bulletin on Free<br />
Cooling Operation of Open Cooling Towers to assist in<br />
selecting a tower for a freecooling application.<br />
High Temperature Applications<br />
EVAPCO’s <strong>REP</strong> Cooling Tower as standard is capable of<br />
handling up to 130°F entering water temperature, which<br />
is higher than most crossflow cooling tower fill sheets. It<br />
will not deform or degrade at a continuous temperature<br />
application of 130°F.<br />
However, there are applications where a higher temperature<br />
rated fill is required. For these applications, a fill<br />
material is available as an option which allows the entering<br />
water temperature to operate at a continuous 150°F.<br />
Please consult the factory for selections of higher temperature<br />
fill Cooling Towers.<br />
Rigging Guidelines<br />
The rigging requirements of the <strong>REP</strong> Cooling Tower are<br />
covered in EVAPCO’s Rigging Bulletins which are available<br />
from your local EVAPCO Representative or the factory.<br />
Consult Bulletin# 148.<br />
These guidelines cover recommended lifting methods for<br />
the top and bottom sections of the cooling tower and<br />
how to mate the sections together. In addition, installation<br />
instructions for the flume box, flume plate, vertical<br />
& horizontal splash guards (multi-cell units only) fan<br />
screens and motor/gearbox davits are also provided.<br />
Consult the Factory or your local EVAPCO<br />
representative for:<br />
Layout Guidelines<br />
Bypass Connection Sizing and Location<br />
Equalizer Connection Sizing and Location<br />
Remote Sump Connection Sizing and Location<br />
Cooling Water Contribution to Remote Sump Tanks<br />
Field Thermal Performance Tests<br />
Seismic and Wind Load Applications<br />
Operating and Maintenance Questions<br />
Pan Heater Sizing for Low Ambient Operation<br />
Factory Mutual<br />
Vibration Isolation<br />
Dirty Water Applications<br />
The EVAPAK ® fill used in the <strong>REP</strong> Cooling Tower is<br />
designed to operate in almost all cooling water applications.<br />
However, there are some “dirty” water applications<br />
where the standard fill spacing is not adequate,<br />
such as a pulp and paper mill cooling tower or other<br />
application where heavy particulate will be mixed in<br />
with the water.<br />
Please consult the factory for a special cooling tower<br />
selection (for this application) utilizing EVAPCO’s<br />
exclusive EF19 and EVF 19 anti-fouling fill.<br />
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