Pin Fin Exchanger Frame Optimization And Heat Transfer Performance Study

Beginning with pin fin conduction ,the calculating formula of pin fin efficient is derived based on the analysis of pin fin heat transfer mechanism . The curves of pin fin efficiency and pin fin parameter are transmitted. Calculating formula for heat transfer coefficient was educed through the analysis and parallel with smooth tube exchanger Which make for mostlyfactor certain for the frame Optimization of pin fin heat transfer.They are pin fin length ,pinfin portrait distance,pin fin diameter,pin fin number.Optimization design of the geometric parameter of pin fin tube is done using heat-transfer volume per temperature difference required the sum volume of heat-transfer and pin fin as objective function.Make mutual leash four factor become restrict condition. Calculating by designing the programme using punish SUMT and Powell Method educed the outcome of optimization.Based on the analysis of portrait flow pin fin tube flowing characteristics, Simulation tube bundle experiments of orthogonality design were done using hot water(cold water )and diesel oil as heat-transfer medium. The associate formula of heat-transfer and resistance are obtained based on the experimental data of linearity regression analysis using dimension theory and modified Wilsons method. The results of optimization design agree well with the optimization scheme of orthogonality design.And make an error analyse.From the result of orthogonality design , the sensitive degree diversity for four factor are educed ,the most sensitive is pin fin portrait distance among of four factor ,and later development trend of intensify heat transfer are that change portrait distance or incline degree of pin fin can achieve much better the purpose of intensify heat transfer and tighten for pin fin tube.