초록 ▼

A heating system for a building that includes a furnace having a water jacket surrounding a burner unit. Heated water is circulated from the water jacket to a heat exchange system in the building such as radiators and the water is returned to the water jacket through a return conduit to be reheated.

A heating system for a building that includes a furnace having a water jacket surrounding a burner unit. Heated water is circulated from the water jacket to a heat exchange system in the building such as radiators and the water is returned to the water jacket through a return conduit to be reheated. Water from the jacket is also circulated through supplemental conduit through a gas tube water heat exchange apparatus located at the exhaust flue from the furnace for recovering heat from the exhaust gases. Water heated from the exhaust gases returns to the primary circulation system. More specifically, water flows from the cooler portions of the water jacket and/or the return conduit of the main circulation system to the gas-to-water heat exchange unit. Water flows from the gas-to-water heat exchange unit to the relatively warmer portions of the jacket and/or to the primary conduit that delivers water from the jacket to the heat exchange system of the building.

대표청구항 ▼

1. A heating system for a building which includes a gas venting system and a heat exchange system for said building, said heating system comprising:(a) a furnace having an interior space and means to present a flame into said interior space; (b) a water jacket surrounding said interior space and hav

1. A heating system for a building which includes a gas venting system and a heat exchange system for said building, said heating system comprising:(a) a furnace having an interior space and means to present a flame into said interior space; (b) a water jacket surrounding said interior space and having a primary water inlet at the lower end of the water jacket, and a primary water outlet at the upper end of the water jacket; (c) A gas exhaust flue operatively connected to said interior space and for being connected to said gas venting system; (d) a primary feed conduit connecting said heat exchange system to said primary water outlet; (e) a primary return conduit connecting said heat exchange system to said primary water inlet; (f) a gas-to-water heat exchange apparatus operatively connected to said gas exhaust flue and having a secondary water inlet and a secondary water outlet; (g) a supplemental feed conduit connected to said primary water feed conduit and to said secondary water outlet; (h) a supplemental return conduit connected to said primary return conduit and to said secondary water inlet; (i) a primary pump which can be controlled by a thermostat to be on or off and operatively connected to said primary return conduit for pumping water from said heat exchange system to said water jacket and back to said heat exchange system when said primary pump is on; and j) a secondary pump which can be controlled by a thermostat to be on or off and operatively connected to one of said supplemental feed conduit and said supplemental return conduit for pumping water from said primary water inlet through said gas-to-water heat exchange apparatus and into said water jacket through said primary water inlet when said primary pump is off and for pumping water from said primary return conduit through said gas-to- water heat exchange apparatus to said primary feed conduit when said primary pump is on and said secondary pump is on.