At the same time, small hydraulic diameter gives high pressure drop.
Pressure drop is an important factor for heat exchanger performance.
The new flow configuration, named S-shaped fin configuration,has been proposed to reduce the MCHE pressure drop. A numerical study using CFD code was performed: results showed that the pressure drop of the S-shaped fin configuration is about one-seventh that of the conventional zigzag configuration; the heat transfer rate of the S-shaped fin configuration is almost identical to that of the zigzag configuration