EVAPORATIVES COOLERS AND CONDENSERS IN CLOSED CIRCUIT: |
|
CD / RF SERIES |
ADVANTAGES OF OUR COOLERS: |
|
ü Counter Flow; ü The fluid do not enter in contact with atmosphere;üLarger area of contact; üLarger area to air flow; üLower air speed; üWater distribution by gravity in removable and open box or by pressure; üEasy access to all components; üBuilt in corrosion-resistant materials. |
| CONSTRUCTIVE DETAILS OF A CLOSED CIRCUIT FLUIDS COOLER: | ||
| AXIAL FAN:in Polypropylene or Fiberglass |
|
RECIRCULATION WATER DISTRIBUTION
SISTEM: PCV pipes and polipropylene nozzles FILL: Cross-waved blocs or triangular bars in Polypropylene. Self-extinguish option. |
| ELETRIC MOTOR: TFVE-IP-55 DRIFT ELIMINATORS: in Polypropylene. Option: self-extinguish. |
COIL: in hot dipped galvanized steel or stainless steel. | |
| STRUCTURE:
standard Fiberglass or self-extinguish.
|
CENTRIFUGAL PUMB: water recirculation | |
ADDITIONAL INFORMATION:
Fluid
Coolers are very similar to cooling towers. They both reject heat by evaporating water and
use many of the same components; except for the coil bundles used in coolers in place of
some or all of the wet deck used in cooling towers.
Coil
products can be described such as:
- Closed
circuit cooling towers (fluid coolers) used to cool fluids or,
-
Evaporative Condensers that condense refrigerant.
Closed
circuit towers typically produce the same result as the “open” cooling tower-
that of cooling a water stream from an elevated temperature to a reduced temperature-
although other fluids can also be cooled. The fluid in the process is confined within a
coil inside the fluid cooler. Heat is passed through the walls of numerous coil circuits
to water, which is sprayed over the coil. The process fluid remains free of contamination
while the water on the exterior sacrifices itself to evaporating and collecting debris
from the airstream.
The water
from the basin is drawned by a small pump, mounted on the side of the fluid cooler and it
is conveyned to the top of the cooler where it is sprayed over the coil.
The
closed circuit tower is ideal for cooling equipment with small, hard to clean passageways
that would clog with a conventional cooling tower. The quality of the water is preserved
in closed circuit. Therefore the closed circuit cooler costs appreciably more to purchase
and operate. In addition to that, the physical size of the cooler is always bigger than
that of a cooling tower, sized for the same duty.
Another
difference we should point out is that traditional cooling towers must be installed at the
highest system elevation, fluid coolers can be mounted at any elevation in the system, as
long as the maximum pressure is not exceeded.
Coils can
be made from steel, copper or stainless steel, depending on the fluid and plant
conditions. Steel coils, for example, should not be applyed to systems that are open to
the atmosphere. An open system allows air to continually enter causing corrosion of the
untreated coil interior reducing heat transfer and causing premature coil failure.
Deionized water can also ruin steel coils in very short term. Copper coils work better for
deionized water.
Another
type of fluid cooler is the evaporative condenser. It is built like a fluid cooler but
instead of sensible temperature reduction of a liquid stream, it accepts a vapor (such as
compressor discharge in a refrigeration system) and extracts latent heat causing the vapor
to condense.
For
additional information, please contact our engeneering department.
© 2001 HD-HIDROTERMICA Equipamentos Industriais Ltda. All rights reserved.
FOR FURTHER INFORMATION, PLEASE CALL (55-11) 4446.6199 or 4408.0499- FAX: 4446.6665 - E-MAIL: HDT@HIDROTERMICA.COM.BR
