Abstract: Based on previous investigation an improved model is presented for predicting thermalcontact resistance of finned tubes.Fin efficiency is used directly in the model and iteration algorithm is recommended so that the accuracy of prediction is improved considerably.For examination of the model,expreimental study is carried out,it is shown that experimental data and predicted values are in good agreement.

摘要： 在前人研究的基础上，提出了改进的预测接触热阻的理论模型，直接从翅片效率的定义出发，用计算机迭代求解，使计算更简捷，预测准确度也有所提高.为了检验预测模型，对缠绕翅片管和整体轧制双金属翅片管进行了试验研究，试验表明，本文提出的理论模型预测值和试验值吻合良好.