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# VA 23 81 23

## COMPUTER-ROOM AIR-CONDITIONERS

active, Most Current
 Organization: VA Publication Date: 1 April 2011 Status: active Page Count: 19
##### scope:

DESCRIPTION

A. This section specifies process cooling split systems air conditioning unit.

B. Definitions:

1. Energy Efficiency Ratio (EER): A ratio calculated by dividing the cooling capacity in Btuh by the power input in watts at any given set of rating conditions, expressed in Watts (Btu/h) per watt.

2. Coefficient of Performance (COP): A ratio calculated by dividing the change in heating or cooling capacity (Btu/h) to the energy consumed by the system (kW), expressed in Btu/kWh.

3. Unitary (AHRI): Consists of one or more factory-made assemblies, which normally include an evaporator or cooling coil, a compressor and condenser combination, and may include a heating function.

4. CRAC Units: Computer Room Air Conditioning Units.

### Document History

VA 23 81 23
April 1, 2011
COMPUTER-ROOM AIR-CONDITIONERS
DESCRIPTION A. This section specifies process cooling split systems air conditioning unit. B. Definitions: 1. Energy Efficiency Ratio (EER): A ratio calculated by dividing the cooling capacity in...