Parameter Sensitivity Analysis of Heat Transfer Performance of Finned Tube Evaporator
Using the Sobol'global sensitivity analysis method,the first-order sensitivity and total sensitivity of each influence pa-rameter on the heat transfer coefficient were calculated.The influence degree and law of single and multiple corrugated finned tube parameters on the heat transfer coefficient were explored and analyzed,and the response surface of the relationship between the heat transfer coefficient and each parameter was constructed.Results:The sensitivity and response surface analysis show that the fin spacing has the greatest influence on the heat transfer coefficient,followed by the fin thickness.And the influence of mass flow and wage heat flux is similar,but greater than that of tube diameter.The interaction between the fin spacing and other fac-tors is extremely intense in a certain range,and the interaction between the fin spacing and the fin thickness is the largest,fol-lowed by the interaction between the mass flow rate and the heat flux of the working fluid side.Moreover,the sensitivity values of the tube spacing perpendicular to the wind speed direction and the tube spacing parallel to the wind speed direction are 0,indicat-ing that the influence of the two on the heat transfer coefficient can be ignored.