Which type of condenser is better when both tube side and shell side fluids are fouling?

When both the tube side and shell side fluids are fouling, a double-pipe or shell-and-tube condenser is generally preferred. Shell-and-tube condensers offer greater flexibility for cleaning and maintenance, as the design allows for easy access to both the shell and tube sides. Additionally, they can be designed with multiple passes, which enhances heat transfer efficiency and accommodates fouling. This adaptability makes them a better choice for applications facing fouling on both sides.