It is not possible for every industry to provide cooling water as a cooling media to a Heat Exchanger (Cooler) due to conditions such as : places where supply of water is scarce, places where the system is mobile, places where continuous supply of water is not possible, places where cooling tower & relevant pumps are not economical. Under the circumstances Forced Air is used as a cooling media to cool the fluid, oil, water or coolant as the case may be. The cooling equipment employed in such events is called as Air-Blast Cooler or Radiator. In a Radiator the fluid is made to pass through the finned tubes and air is forced on them by a fan or a blower. The function of a Radiator is just similar to that in a car.