CH-95-24-1 -- Experimental Results with Hydrocarbon Mixtures in Domestic Refrigerator/Freezers PDF

Reports that energy savings of up to 6% were achieved with propane/n-butane blends in a domestic refrigerator/freezer compared to the baseline test with R12. The hydrocarbon mixtures were tested as drop-in substitutes. All the hardware remained the same, only the capillary tube was lengthened to control the flow rate. The additional capillary tube length, the blend concentration and the charge were adjusted to determine the optimum performance. States the best result, of 2.29 kWh/day was achieved with a blend of 70% R290 and 30% R600, 70g of charge, and an additional capillary tube length of 5 ft.

KEYWORDS: year 1995, Domestic, refrigerators, freezers, experiment, performance, energy conservation, blends, hydrocarbons, R12, comparing, capillary tubes, propane, butane