(a) the advantages

1. The heat transfer coefficient is high

Tube and shell heat exchanger structure, in terms of strength is very good, but not very ideal, from the standpoint of heat transfer for fluid flow in the shell side there is a baffle plate, shell, fluid, the bypass between heat exchange tube and tube bundle - shell. Through the bypass fluid, not fully participate in heat transfer. And plate heat exchanger, there is no bypass, and corrugated plate can make the fluid in smaller velocity under turbulent flow. So have higher heat transfer coefficient of plate heat exchanger, generally considered a tube and shell heat exchanger 3 ~ 5 times.

Accomplish the same heat transfer, the use of tube and shell heat exchanger and the adoption of plate heat exchanger; Plate heat exchanger heat transfer area is only for the tube shell type heat exchange area of 1/3 ~ 1/4.

2. The logarithmic mean temperature difference is big