Procedure for Measuring System COP [Coefficient of Performance] of a Mobile Air Conditioning System on a Test Bench.

Scope:

1.1 This Standard applies to motor driven mobile air conditioning systems consisting of one in-car air coil (evaporator), a compressor, an expansion device, and one under-hood air coil (condenser). 1.1.1 This standard can also be used for measuring systems that use electrically driven compressor if measurement of input power to compressor is carefully considered. 1.1.2 This standard can also be used for measuring systems that include the entire air handling system if air side pressure drop for the entire vehicle system is carefully considered. 1.1.3 This standard can also be used for measuring systems that include the entire front end cooling module if air side pressure drop for the entire vehicle system is carefully considered. 1.1.4 This standard can also be used for measuring systems that include a secondary cooling loop if the power to drive the pumps in this system is carefully considered. 1.2 This Standard specifies procedures, apparatus, and instrumentation that will produce accurate steady state capacity and efficiency data for refrigerant components. 1.3 This Standard does not: 1.3.1 Specify tests for dual evaporator systems, 1.3.2 Specify transient test methods, 1.3.3 Make recommendations for safety 1.3.4 Specify tests for production, specification compliance, or field testing of mobile air conditioning systems.

Rationale:

The impact of mobile air conditioning systems on the environment is becoming more important. Fuel used to power the system impacts both fuel economy of the vehicle and tail pipe emissions of carbon dioxide.

History:
Standard Published Revision Status
J2765_200810 2008-10-16 Latest Issued
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