A Double Pipe Heat Exchanger is a simple type of heat exchanger consisting of one pipe placed inside another larger pipe, allowing two fluids to flow either in counterflow or parallel flow. The hot fluid flows through one pipe while the cold fluid flows through the annular space between the pipes, enabling efficient heat transfer. This design is compact, easy to fabricate, and ideal f... https://www.heatexchanger.co.in/Heat-Exchanger/Double-Pipe-Heat-Exchanger/