A detailed model of the serpentine microchannel condenserhas been developed and validated with experimental data.The prediction errors on the condenser capacity and refrigerant-side pressure drop are within 10%.Based on the validated model, four serpentine microchannel condenser designs have been numerically compared.The serpentine pass number, the serpentine tube number,and the header length are the primary and interacting designparameters for the condenser capacity, refrigerant pressuredrop and charge. Less serpentine pass number means moreserpentine tube number and shorter header length of theserpentine microchannel condenser. Therefore, the capacityis low. The pressure drop is low. The charge is high. Vice versa.The impact of airside maldistribution on the performancehas been evaluated as well. The simulation results indicatethe uniform distribution has the highest capacity. The distribution of large face area occupied by low face velocity shouldbe avoided in design because it could cause a 20% performance drop.
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