Patent ID: 6835307
Filing Date: 2004-12-28
Classification: C02F,F24D,F28D,F28F,Y02E,Y10S

Abstract:
An apparatus for providing purified water comprising:A. a heat exchanger for exchanging heat between purified water and makeup water, having a makeup water inlet and a preheated makeup water outlet; at least one heat exchange surface between said purified water and makeup water, a treated water inlet, and at least two or more treated water outlets, wherein said treated water outlets provide purified water at different temperatures; and B. a water heater tank with a tank inlet and a tank outlet, capable of heating said makeup water to a temperature sufficient to inactivate selected organisms and provide purified water; wherein said tank inlet is connected to said heat exchanger preheated makeup water outlet and said tank outlet is connected to said heat exchanger treated water inlet.