Experimental Research on Single Phase Convection Heat Transfer in Micro-Fin Tube

An experimental investigation of heat transfer and flow resistance characteristics of single phase water in three micro-fin tubes with different fin height was conducted.At the same time,the efficiency of micro-fin tubes within the experimental scope was evaluated and the optimal working region was determined.Based on the experimental data in the optimal working region,correlations for predicting the heat transfer and flow resistance were also given by multiple regression method.The result indicates that the micro-fin tubes can greatly enhance the single-phase heat transfer in turbulent flow,and the increase of heat transfer coefficient is higher than the increase of flow resistance.The accuracy of the correlation is very high,of which the deviation from the experimental value is very small.