Fixed tube sheet heat exchanger
Fixed tube sheet heat exchanger
These are commonly used up to temperature difference of 90-95° C. Above these temperature differences problems of differential expansion arise. These are used when shell side fluid is clean and non-fouling.
Advantages and Disadvantages of Fixed tube sheet heat exchanger
Advantages
- It is simple in construction and economical.
- Gasketted joints are minimum.
- Shell is welded to tube sheet on both sides, so leakage possibility is less.
- No intermixing of shell side and tube side fluid.
- No limitation on number of tube side passes.
- Since straight tubes are used, tube replacement is easier.
- Tubes can be cleaned mechanically or chemically.
- Minimum by passing of shell side fluid between tube bundle and shell.
Disadvantages :
- It is not possible to remove tube bundle for inspection and cleaning.
- Outer surface of tube cannot be cleaned manually or mechanically.
- Shell and tube sheet material should be weldable together.
Reference:- Wiki
