Isobutane as a Refrigerator Freezer Refrigerant

Isobutane is considered as a possible candidate for the refrigerant to be used in the consumer refrigerator freezer. Results of an analytical analysis that predicts the perfonnance of isobutane in the consumer refrigerator freezer and results of calorimetric measurements of compressors operating with isobutane are presented. Both the analytical analysis and the experiment suggest that the use of isobutane as a refrigerant, compared to the presently used dichlorodifluoromethane, R-12, (or tetrafluorothene, R134a) will result in a reduction in power.