Closed circuit heating system
Patent
·
OSTI ID:5933132
Fuel is burned in the lower chamber of a furnace with hot products of combustion rising past an air-to-air heat exchanger to an upper chamber to which outside air is supplied for secondary combustion. Air is heated in a compartment above the upper combustion chamber and passes, together with air within the heat exchanger, through a closed circulation system to a duct within a stone-filled heat storage chamber, then to an air-to-water heat exchanger, through the stones in the heat storage chamber and back to the heating compartment and air-to-heat exchanger. Water heated in the air-to-water exchanger is used for space heating purposes, as in baseboard hot water heaters. Some of the heat may also be used to power a heat engine and/or to dry wood to be used as fuel in the lower combustion chamber.
- Assignee:
- IFI; EDB-82-041596
- Patent Number(s):
- US 4277021
- OSTI ID:
- 5933132
- Country of Publication:
- United States
- Language:
- English
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