Optimization on Condenser Fin in Air Conditioners with Small Tube Diameter
Small-diameter heat exchangers for air conditioning can reduce cost and refrigerant charge,which is of great significance for realizing energy savings and emission reduction.In this study,the plate fins of a 5 mm single-row air-conditioning condenser are optimized to replace a 7 mm single-row air-conditioning condenser.The optimization variables are tube spacing,fin width,and fin spacing,and the objectives are to maximize heat transfer and minimize air-side pressure drop and cost.The Taguchi method was selected for the experimental design and single-objective optimization,and the grey relational analysis and comprehensive performance index method were used for multi-objective optimization.The final optimum tube spacing,fin width,and fin spacing were 16.0 mm,16 mm,and 1.4 mm,respectively.The heat transfer was the same as that of the 7 mm tube condenser.The pressure drop was reduced by 35％,and the cost was reduced by 26％,validating the effective replacement of the 7 mm condenser.
air conditioning condenserplate finsTaguchi methodgrey relational analysiscomprehensive performance index methodoptimization
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