Patent ID: 6983723
Filing Date: 2006-01-10
Classification: F24D,F28D,Y02B

Abstract:
1. A method for providing on-demand hot water comprising the steps of: a) providing an on-demand water heater comprising: b) providing pressurized steam to said steam infeed conduit from a steam boiler so as to re-capture waste heat in a steam circuit of said steam boiler wherein said pressurized steam is otherwise not in demand in said steam circuit within a facility containing said steam boiler; c) causing hot water to flow to an end use from said hot water outlet upon demand from the end use so as to draw water through said steam-to-water heat exchanger from said cold water infeed; d) causing said steam flow regulator to open steam flow upon said trigger signal to allow flow of steam from said boiler through said steam-to-water heat exchanger upon detection by said temperature sensor of a hot water temperature below the threshold temperature; e) causing said steam flow regulator to close off steam flow to said steam-to-water heat exchanger upon detection by said temperature sensor of a hot water temperature at or above said threshold temperature.