출구콘이 가역송풍기의 성능에 미치는 영향

This study is concerned with effects of exit cone on performance of a reversible fan. There is no exit cone in the present reversible fan to cool down the driving motor. So using the three dimensional flow analysis, performance of a reversible fan were investigated cases with and without exit cone. The three dimensional flow analysis is powerful tool to predict the performance of fan because it is possible to calculate the performance of diverse geometry with low cost. In this study, two cases were investigated by three dimensional flow analysis. The performance maps and flow fields of two cases are compared.