Closed System Cooling Tower is induced draft crossflow cooling tower in which stainless steel coils (heat exchanger) are incorporated inside cooling tower. There are two cooling water loops. One is open loop cooling water which is circulated within tower and used for cooling down the closed loop cooling water. The closed loop cooling water is cooled without direct air contact. Heat is removed by falling cooling water (open loop) on the outer surface of the stainless coils. This type of cooling tower is suitable for system that clean cooling water and no contamination are needed.