It’s a Gas Cooling Device(GCP). The Force Draught Cooler is tubular Convective type Heat exchanger used for cooling hot gases. Air to Gas FD Heat Exchanger are simple economical and best suited for the system. Using a series of Force Draught Fan atmospheric low temperature ambient air transferred over multiple rows of tubes in order to cool the internal hot gases. Cooling takes place due to convectional temperature gradient between hot gases and outside atmospheric air. At the time of making designs gas volume, velocity, Mass, Heat Transfer Area must be considered.