Heating system
Patent
·
OSTI ID:7355485
A method for recovering waste heat from heating system exhaust gas is described. In a heating system located in a furnace room and including a furnace and an air blower for delivering air to the furnace via an inlet stack and heating pipes for the delivery of heated air from the furnace to the areas to be heated, the improvement utilizes the heat passing through from the furnace to the chimney by preheating furnace room air before passing through the air blower and inlet stack to the furnace. The method consists of: an elongated horizontally disposed waste stack of generally rectangular plan for the through flow of exhaust gases from the furnace to the chimney and including: a first end portion connected at its inboard end to the furnace and having an outboard end and a first side portion connected at its inboard end to the outboard end of the first end portion; a first pair of arcuate deflectors disposed in close spaced relationship and circumadjacent the oppositely facing sections of the spaced first and second side portions of the waste stack and defining primary curvilinear air passages; a horizontally disposed baffle connecting between the arcuate deflectors of the first pair; an opened bottom hood including a horizontally disposed top wall section and spaced opposite end and side wall sections; the respective top and end and side wall sections of the hood being disposed in uniform spaced relationship and in close proximity to the adjacent portions of the waste stack and defining secondary curvilinear air passages; and with air from the furnace room being captured and circulated first within the secondary air passages and second within the primary air passages.
- Assignee:
- TIC; EDB-76-041880; ERA-01-016421
- Patent Number(s):
- US 3930489
- OSTI ID:
- 7355485
- Country of Publication:
- United States
- Language:
- English
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