- True counter flow configuration maximizing the temperature differences between the shell side and tube side fluids (result is less heat surface needed compared to multi-pass type).
- Double pipe exchangers use a pipe within pipe design and are commonly used for high fouling services and for smaller duties.
- Double pipe exchangers use pipe instead of thin wall tubing to enhance integrity.
- Longitudinal fins may be used to provide extended heat transfer surface with relatively low resulting pressure drops. They can be cut and twisted for further enhancement.