Numerical simulation and structural optimization of condensing air duct in refrigerator
In order to improve the heat transfer efficiency of condenser and compressor in the refrigera-tor compressor bin and reduce the pressure loss of air duct,the flow field and temperature field in the bin were studied by numerical simulation method,and the optimization design for the structure of con-densing air duct was carried out.Firstly,the solution of increasing the outlet area of the bottom plate was selected to solve the problem of high local temperature of the compressor,and the performance of different solutions was analyzed.Secondly,the influence of the position of the cooling components on the pressure loss of air duct,the heat transfer coefficients of condenser and compressor and the maxi-mum temperature of the compressor was studied.Finally,the optimal condensing air duct structure was obtained by orthogonal test.The research shows that the position of condenser and compressor is a significant factor affecting their heat transfer coefficients,and the optimal air duct structure is as fol-lows:the bottom exit scheme 1,the position of the condenser of 340 mm and the position of the com-pressor of 570 mm.Compared with those before optimization,the pressure loss of air duct is reduced by 1.16％,the heat transfer coefficients of condenser and compressor increase by 1.63％and 15.63％,respectively,and the maximum temperature of the compressor is reduced by 11.64 ℃.
condensing air ductnumerical simulationstructural optimizationorthogonal test
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