Register now or log in to join your professional community.
It depends on the material you are handling . Normally double pipe is used for highly volatile materials with corrosive properties while shell and tube is used for materials with less corrosive properties .
In shell and tube heat exchanger when velocity of liquid phase tends to zero you can solve this problem by replacing with double pipe heat exchanger.
According to my knowledge Double Pipe heat exchanger used for small heat transfer and Shell and tube is used when large heat transfer is required.
