A Heat Exchanger is a device that transfers heat between two or more fluids without allowing them to mix. It is widely used in industries to heat, cool, or recover energy from process fluids efficiently. Common types include shell-and-tube, plate, air-cooled, and finned heat exchangers. https://www.heatexchanger.co.in/Heat-Exchanger-Blog-Details/role-of-heat-exchangers-in-industries/