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