Currently, due to advances in CFD technology, heat transfer analysis which took the time and effort has become easier by the coupled analysis of fluid-structure using CFD simulation (Conjugate Heat Transfer). Until now the verification of this analytical accuracy is not sufficient, firstly a large-scale experiments for verification were conducted. The measurements were carried out with high accuracy by the measuring apparatus and the performance of the fin and tube type heat exchanger was obtained. Secondly the one element of the test heat exchanger is analyzed by the CFD with solid fluid coupled analysis. The precise mesh was generated consist of primary and secondary fluid and of fin and tube solid. The accurate simulation for the heat exchanger was carried out and the heat transfer and pressure loss for each flow rate were determined. The experimental results and CFD results showed good agreement, especially in the large flow rate range.
