The Greener Closed-Loop System0 pages
The Greener Closed-Loop System
Cooling tower heat exchanger systems beat closed-circuit cooling towers for economy and efficiency!
Certain processes require a closed-loop, whereby
Cooling Tower Heat Exchanger System vs. Closed Circuit Cooling Tower
the process water for cooling does not come in
Cost for typical installation
Conditions: 330 GPM, 102°F EW, 90°F LW, 78°F WB
contact with the atmospheric air. This prevents
the cooling water from picking up particles that
may not get filtered or even dissolved gases.
Closed-Circuit Cooling Tower
Closed-loop cooling requires more energy and has
Total HP
42
higher initial and life-cycle costs than an open cooling
Materials
Galvanized Steel
tower, but provides an added protection to expensive
processes or chillers being cooled.
Costs
For closed-circuit cooling, Delta recommends a
cooling tower plus a plate heat exchanger system.
$38,520 (including
closed-circuit cooling
tower, basin heater,
spray pump and control
panel
Cooling Tower Heat Exchanger Sys.
17.5
HDPE Cooling Tower
Stainless Steel Exchanger
$25,980 (including cooling
tower, basin heater, skid
mounted heat exchanger with
spray pump and control panel
The skid-mounted plate heat exchanger provides a closedcircuit on the hot side of the heat exchanger. The noncorroding Delta cooling tower feeds the cold side of the
plate heat exchanger.
The advantages of this system over a closed-circuit cooling
tower (usually galvanized sheet steel and galvanized steel
coil inside a cooling tower box) are:
•
Cost - Typically Costs Less to purchase & operate
•
HP - Less Total HP required, Green solution
•
ASHRAE 90.1 Performance requirements for heat
rejection equipment show closed-circuit cooling towers
use 2.5 x more HP
•
Warranty - Delta cooling tower has 15-Year casing
warranty versus 1-Year on galvanized steel
•
Expandability – Heat Exchanger can handle future
load increase by adding plates
•
Maintenance – Heat Exchanger has Stainless Steel plates
and is much more accessible than coil for easy cleaning
•
Weight – Delta tower is 3-7 times less weight saving rigging
and structure costs
•
Install Flexibility - Heat Exchanger skid can be placed
indoors without need to maintain Glycol solutions
necessary with outdoor coil
•
Water treatment - Easier and much less risk with
Engineered Plastic Cooling Tower
•
Replacement Cost - Galvanized steel coil replacement
cost (labor and material) often exceeds initial unit cost of
Closed Circuit Cooling Tower
•
Downtime – Delta system prevents costly downtime.
Corrosion is only delayed with galvanizing and wet/dry
operation, chemicals, PH fluctuations, salts and other
atmospheric conditions can lead to premature failure
Delta Cooling Towers, Inc.
Phone: 973-586-2201 – Fax: 973-586-2243
www.deltacooling.com