WATER TANK WITH EXCELLENT DISPERSION EFFICIENCY FOR WATER PRESSURE AND FUEL CELL SYSTEM USING THE SAME

摘要

Disclosed is a water tank with excellent dispersion efficiency for water pressure and fuel cell system using the same to efficiently disperse the pressure of a refrigerant that circulates inside the water tank to reduce load in the motor of coolant circulation pump and improve reliability in operation in extreme conditions such as polar regions or winter season. The water tank according to the present invention comprises: a water tank body; an inlet for the refrigerant which is formed in the upper side of the water tank body to admit the refrigerant heated through a heat exchange; an outlet for warm water heated by the heat exchange between the refrigerant at high temperature admitted through the inlet for the refrigerant and central water filled inside the water tank body; an inlet for the central water formed in the lower side of the water tank body to receive the central water; an outlet for the refrigerant cooled by a heat exchange with the central water filled inside the water tank body; and a circulation pipe for the refrigerant through which the refrigerant that exchanges heat with the central water filled inside the water tank body circulates. The circulation pipe for the refrigerant is formed in a parallel structure which is separable into at least two parts.