LRWB Closed Circuit Cooler
EVAPCO LRWB Closed Circuit Coolers – Principle of Operation
The process fluid circulates through the coil of the closed circuit cooler. Heat from the process fluid dissipates through the coil tubes to the water cascading downward over the tubes; simultaneously, air is blown through the unit by the fans, and travels upward over the coil opposite the water flow.
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A small portion of the water evaporates, removing the heat from the system. The warm moist air is forced to the top of the closed circuit cooler by the fan and discharged to the atmosphere. The remaining water falls to the sump at the bottom of the cooler where it is re-circulated by the pump up through the water distribution system and back down over the coils.
Product Features
Thermal-Pak II Coil
EVAPCO’s Thermal-Pak II coils patented design assures maximum cooling capacity. The airflow through the coil is counterflow to the fluid flow, providing the most efficient heat transfer process. A special coil design is utilized to reduce the air pressure drop through the unit while maximizing tube surface area and increasing its heat transfer capabilities.
- Elliptical return bends allows for more circuits per coil bundle increasing the maximum capacity per footprint
- Coil located in airstream increasing dry bulb switchover temperature
- CrossCool Internal Tube Enhancement increase fluid turbulence providing additional evaporative capacity
- Available in type 304 SS or type 316 SS construction
Drift Eliminators
- Limits the drift rate to less than 0.001% of the recirculating water rate
- Limit the potential of spreading Legionella
- Constructed of an inert polyvinyl chloride (PVC)
Pressurized Water Distribution System
EVAPCO’s Zero Maintenance ZMII® spray nozzle remains clog free while providing even and constant water distribution, providing the industry’s best performing non-corrosive, maintenance-free water distribution system.
- ZMII spray nozzles have a 1-1/4″ diameter opening and a 1-1/4″ splash plate clearance
- Mounted in corrosion-free PVC water distribution pipes that have threaded end caps
- Provides unequaled coil coverage and scale prevention
Equipment Upgrades
Stainless Steel Water Touch Basin
- Available in Type 304 or Type 316 Stainless Steel
- Includes the entire basin area including the support columns
- Welded basin seams for leak-free operation
Stainless Steel Casing & Fan Section
- Available in Type 304 or Type 316 Stainless Steel
- Includes the entire upper section including fan guard
Stainless Steel Thermal-Pak II Coil
Stainless Steel Coils provide Superior corrosion resistance for hostile environments and is available with the standard EVAPCO lead time! The Evapco 304 SST coil option can be manufactured as an ASME coil and is CTI certified.
- Available in Type 304 or Type 316 Stainless Steel
Sound Sensitive Installations
The centrifugal fan design operates at lower sound levels which make these units preferable for installations where noise is a concern. Additional sound reduction options include:
- Inlet Sound Attenuation
- Discharge Attenuation
FACTORY-MOUNTED Water Treatment Systems
Available with FACTORY-MOUNTED water treatment systems, providing environmentally sensitive alternatives for treating water in evaporative cooled equipment.
- SmartShield solid chemical water treatment system
- Pulse-Pure CHEMICAL-FREE water treatment system
Maintenance Accessories
Available with multiple equipment options to aid in the maintenance of the closed circuit cooler.
- Ladders
- Sump Sweeper Piping