A shell and tube heat exchanger with an expansion bellow is a specialized type of heat exchanger designed to accommodate thermal expansion and contraction during operation. This type of heat exchanger consists of a shell, typically cylindrical in shape, containing a bundle of tubes. An expansion bellow, also known as an expansion joint, is incorporated into the design to absorb the thermal expansion and contraction of the tubes as the temperature of the fluid inside them fluctuates.https://www.heatexchanger.co.in/Heat-Exchanger/Shell-and-tube-heat-exchanger/