A protocol was developed to define calorimeter operating pressures for non-azeotropic refrigerant mixtures (NARMs) that corresponded with the saturated evaporator and condenser temperatures commonly used for pure refrigerants. Compressor calorimeter results were obtained using this equivalent-mean-temperature (EMT) approach and a generally applied Association of Home Appliance Manufacturers (AHAM) procedure at conditions characteristic of a domestic refrigerator-freezer application. Tests with R12 and two NARMs indicate that compressor volumetric and isentropic efficiencies are nearly the same for refrigerants with similar capacities and pressure ratios.
KEYWORDS: refrigerators, freezers, R12, refrigerants, mixtures, non azeotropic, testing, experiment, performance, domestic, comparing, R22, R141b, R32, R124, calorimeters.
Citation: Symposium, ASHRAE Transactions 1993, Vol.99, pt.1
Product Details
- Published:
- 1993
- Number of Pages:
- 20
- File Size:
- 1 file , 2.3 MB
- Product Code(s):
- D-18288
