Experimental methodology of capillary flow rate on characteristics of refrigerator
A comparative study was conducted on the energy-saving effect of a certain AQR-TZ42k refrigerator under different capillary flow conditions.The experimental study found that:using 12 L/min,7 L/min,5 L/min capillary flow were tested,when the capillary flow is 5 L/min,the minimum power consumption in the stable section of the whole machine is 0.70 kW·h/24 h,with the increase of the flow,the power consumption increased by 3％,14％respectively.Dual capillary time sharing control,the capillary flow rates of 5 L/min(low load)+5 L/min(high load),7 L/min(low load)+7 L/min(high load),12 L/min(low load)+12 L/min(high load)were used for the test,respectively.When the combination of 5 L/min(low load)+5 L/min(high load)is adopted,the power consumption of the whole machine(including the defrosting section)is the lowest 0.80 kW·h/24 h,and the power consumption increases by 6％and 19％with the increase of flow.The experimental result proves that the energy saving effect of the refrigerator is improved by controlling the capillary flow rate by time sharing.
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