| 摘要 |
PURPOSE:To improve the heat transfer performance by a structure wherein a plurality of dents are provided onto the outer surface of a heat transfer pipe on the side, which turns to be a rear surface with respect to the flow of fluid. CONSTITUTION:A plurality of dents are provided onto the outer surface of a heat transfer pipe 1 on the side, which turns to be a rear surface with respect to the flow of fluid. As a result, the degree of generation of separation vortices becomes smaller and the flow resistance decreases, resulting in facilitating the fluid to flow to a group of heat transfer pipes at the rear row on the downstream side. Accordingly, the heat transfer performance of the group of heat transfer pipes at the rear row is also brought into full play and the heat transfer performance of the titled heat exchanger is also improved. |
