Test Procedure for Internal Heat Exchangers of Mobile Air-Conditioning Systems with R-134a or R-1234yf Refrigerant
J3094_202302
The purpose of this SAE Standard is to define a common set of thermodynamic test conditions to evaluate internal heat exchangers for use with R-134a and R-1234yf refrigerants in mobile air-conditioning systems. This SAE Standard can be used to test actual vehicle IHX designs or standardized IHX samples, which can be used for comparison based on a common length and shape.
Rationale:
This revision updates the scaling limits for IHX based on bench testing results gained with various lengths of the same cross section design from two suppliers. Results of a very short IHX of approx 206 mm revealed a linear performance scaling. Subsequently the scaling limits were modified to up to a ratio of 1.1 and down to 200 mm and the reporting template of SAE J3174 updated.
Related Topics:
Life cycle analysis
Air conditioning
Heat transfer
Heat exchangers
Also known as: SAE J 3094
SAE MOBILUS
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