Refrigerant Mass and Oil Migration During Start-up Transient
نویسندگان
چکیده
A comparison of the start-up cooling capacities for an automotive R744 and an automotive R134a air conditioning system is presented. It is shown that development of the cooling capacities during start-up can be described with one correlation for both systems. The comparison of the cooling capacities and the redistribution of refrigerant mass during start-up suggest a strong relationship between the two. The transient refrigerant migration of a capillary tube throttled R134a automotive air conditioning system during start-up is presented. It was found that 28% of compressor energy could be saved by preventing the migration of refrigerant before start-up. The measurement of oil hold-up before start-up and at steady state operation conditions indicates that the majority of oil migration happens between the compressor and accumulator.
منابع مشابه
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