Types of Heat Exchangers

1- Double Pipe Heat Exchange's

Double Pipe Heat Exchange's

  Advantages of Double Pipe Heat Exchangers:

1.Simplest type of heat exchangers

2.Can be easily assembled

3.Relatively low cost/ft²

4.Small sizes results in high Re and consequently high h

  Disadvantages of Double Pipe Heat Exchangers:

1.Leakages are very common

2.Requires a lot of time in dismantling and cleaning

3.Small surface area of heat transfer/pipe

4.Space requirements are large

• Double pipe heat exchangers should be considered first in design. The heat

transfer surface should not exceed 200 ft².

• If several double pipes are required, their weight increases and thus the shell and tube heat exchangers is better.

2- Shell and Tube Heat Exchange's 

    Non-baffled Heat Exchangers

    Baffled Heat Exchangers

Advantages of triangular Pitch layout:

1. More compact for the same shell size

2. More heat transfer area, thus more heat transfer

3. Less flow area of the shell increases its heat transfer coefficient

Disadvantages of triangular Pitch layout:

1. When the outer fluid causes fouling, they are difficult to clean due to their narrow interspaces

2. Offers high shell side pressure drop