Cooling Equipment



General Types of Cooling Methods - Advantages/Disadvantages


The general types of cooling methods are shown in the chart below. Other cooling methods such as ram air, liquid nitrogen cooling or other special cooling methods are also available.


Type Model Series Advantages Disadvantages
Liquid-to-Air,
Non-refrigerated
CU Highly efficient
Economical
Simplest design
Dissipates heat into room
Primary recirculated coolant is always above ambient air temp
Liquid-to-Liquid*
Non-refrigerated
CUW Quiet operation
Simplest design
Most Efficient
Cooling tap water is drawn only as needed
Primary recirculated coolant is always above secondary water temp
Availability of tap/facility water
Cost of tap/facility water
Liquid-to-Air,
Refrigerated
RU Best temp. control
Primary liquid is brought below ambient air temp.
Dissipates heat into room
More expensive than CU/CUW type
Liquid-to-Air,
Refrigerated Split
System
RU
split
All advantages of one piece RU series
Heat is expelled outdoors
Quiet operation
Set-up cost
Typically more expensive than one piece RU series
Liquid-to-Liquid*,
Refrigerated
RUW Best temp. control
Quiet operation
Primary liquid is brought below secondary (tap) water temp
Cooling tap water is drawn only as needed
Availability of tap/facility water
Cost of tap/facility water
More expensive than CU/CUW series
Air Circulating/
Cooling Unit
Refrigerated & Non-refrigerated
RC Circulates /cools air as primary medium
Can be refrigerated or direct heat exchange
Suitable for rack or cabinet cooling
Custom built series only-consult factory for details

* Tap, facility water, or other liquid, provided by customer