Abstract
In recent years, the fin in heat exchanger has to be downsized because the necessity of the compact heat exchanger rises. In this case, the problem of production's becoming difficult and rising for output cost is caused by directly downsizing of louver fin used so far. So, the downsizing of the offset fin that can be produced at a low price is paid to attention. The purpose of the present study aims at an increase in the heat exchange efficiency by using the compact offset fin. The present study clarifies the change in the heat fluid characteristic for change in flow channel geometry and presence of offset fin by using numerical analysis that applies cycle boundary condition in the direction of the flow qualitatively and quantitatively.
