Water and steam are used as heat transfer fluids in diverse Heat Exchangers systems, due to its availability and high heat capacity, both as a coolant and for heating.Cool water may even be naturally available from a lake or the sea. Condensing steam is a particularly efficient heating fluid because of the large heat of vaporization. A disadvantage is that water and steam are somewhat corrosive. In almost all electric power stations, water is the coolant, which vaporizes and drives steam turbines to drive generators.

• Water industry
• Industrial applications
• Food processing
• Fresh water storage