Innovative Pulse Fired Instant Hot Water Heater

Current hot water heating is done with antiquated immersion heaters in can or in pots held over burners. Such batch type heaters are very slow and inefficient and have no provision for filling the tank from its source of cold water, nor for supplying a pressurized flow for effective use of the hot water, unless electrical or enginer driven water pumps are utilized. Foster-Miller is proposing a self powered, light weight and highly efficient resonant pulse jet burner capable of meeting the U.S. Army's requirements for a nonpowered instantaneous hot water heater. It can be powered by a wide selection of liquid fuels such as gasoline, kerosene and turbine fuels. The proposed resonant pulse jet burner an extension of resonant pulse jet tubes used in insect foggers has been successfully started and tested over a temperature range from -35 F to 100 F. The instant hot water heater features a pressurized, counterflow design with built-in steam dome from which steam can be withdrawn for the operation of a piston type boiler feedwater pump. The projected design - when fully developed - will be capable of delivering approximately 35 gal/hr of pressurized hot water at an outlet temperature of 160 F. Poster-Miller's pressurized hot water heating concept can also be commercialized for applications in camping, construction, civil emergencies and in remote areas.