Heating apparatus
Patent
·
OSTI ID:5535825
A heating apparatus is described which includes: (a) a combustion chamber in which fuel is burned, (b) a primary air supply including a first adjustable damper for regulating the volume of primary air transmitted to the combustion chamber for direct combustion of fuel therein, the primary air supply further including stop means engageable by the first damper to cause the first damper to remain partially open when in a first damper maximum closed position, (c) a flue for venting combustion products generated in the combustion chamber, (d) a catalytic combustor having an inlet and an outlet and interposing the combustion chamber and the flue, the inlet communicating with the combustion chamber and the outlet communicating with the flue, so that the combustion products normally pass through the catalytic combustor in order to be vented through the flue, (e) secondary air supply means for supplying secondary combustion air from outside of the heating apparatus directly to the catalytic combustor inlet, the secondary air supply including a second adjustable damper for regulating the volume of air transmitted to the catalytic combustor, whereby the combustion products from the combustion chamber are mixed with the secondary combustion air just before passing into the catalytic combustor, and the second damper including means to maintain a minimum volume of secondary air to the catalytic combustor when the second damper is in a second damper maximum closed position, (f) control means coupled to both of the first and second dampers for simultaneously adjusting them to regulate the volume of air transmitted to each of the combustion chambers and the catalytic combustor.
- Assignee:
- NOV; NOV-85-013594; EDB-86-120630
- Patent Number(s):
- US 4582045
- OSTI ID:
- 5535825
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR FLOW
AIR POLLUTION ABATEMENT
CATALYTIC COMBUSTORS
COMBUSTION CHAMBERS
COMBUSTION PRODUCTS
COMBUSTORS
CONTROL EQUIPMENT
DESIGN
DRAFT CONTROL SYSTEMS
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
FLUE GAS
FLUID FLOW
GAS FLOW
GASEOUS WASTES
HEATING SYSTEMS
POLLUTION ABATEMENT
WASTES
421000* -- Engineering-- Combustion Systems
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR FLOW
AIR POLLUTION ABATEMENT
CATALYTIC COMBUSTORS
COMBUSTION CHAMBERS
COMBUSTION PRODUCTS
COMBUSTORS
CONTROL EQUIPMENT
DESIGN
DRAFT CONTROL SYSTEMS
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
FLUE GAS
FLUID FLOW
GAS FLOW
GASEOUS WASTES
HEATING SYSTEMS
POLLUTION ABATEMENT
WASTES