High efficiency furnace

Patent · Tue Dec 31 04:00:00 EST 1985

OSTI ID:5900908

Hwang, K S; Koestler, D J

Disclosed is a dwelling furnace having at least one clam-shell type primary heat exchanger in parallel orientation with a secondary heat exchanger, both the primary and secondary heat exchangers being vertically oriented relative to a furnace housing and parallel to the flow of air to be heated. The primary heat exchanger has a combustion chamber in the lower end thereof, and the lower end of the secondary heat exchanger exhausts into a tertiary heat exchanger oriented approximately perpendicular to the primary and secondary heat exchangers and horizontally relative to the housing, below the combustion chambers of the primary heat exchangers and below the exhaust outlet of the secondary heat exchanger. The tertiary heat exchanger includes a plurality of condensation tubes for retrieving the latent heat of condensation of the combustion gases. The furnace further comprises an induced draft blower for drawing combustion gases through the heat exchangers and inducting sufficient air to the combustion chamber of the primary heat exchanger for efficient combustion.

• Assignee: Duo-matic/Olsen Inc.
• Patent Number(s): US 4561421
• OSTI ID: 5900908
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320101* -- Energy Conservation
Consumption
& Utilization-- Residential Buildings-- (-1987)
320304 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
AIR FLOW
BUILDINGS
CONDENSERS
DESIGN
EFFICIENCY
ENERGY EFFICIENCY
ENERGY RECOVERY
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FLUID FLOW
FLUIDS
FURNACES
GAS FLOW
GAS FURNACES
GASEOUS WASTES
GASES
HEAT EXCHANGERS
HEAT RECOVERY
HEAT RECOVERY EQUIPMENT
HEATING
OIL FURNACES
RECOVERY
RESIDENTIAL BUILDINGS
SPACE HEATING
VAPOR CONDENSATION
VAPOR CONDENSERS
WASTES