System for reclaiming heat in a furnace arrangement

Patent · Tue Aug 07 04:00:00 EDT 1979

OSTI ID:5679114

Chen, T C

The present device provides an air duct means disposed between the top end of the heat exchanger of a furnace and the entry port into the flue pipe of the furnace. An electrical blower means is coupled to said duct means to draw hot air therethrough which would otherwise go out to the atmosphere through the flue. The hot air drawn by the blower is redirected to heat, or assist in heating, the building to which the furnace is directing heat, or heat some other facility. An electrical control circuit is connected to the blower means and controls the blower means such that if the furnace is burning fuel, the blower cannot be turned on. The blower can only be turned on after a predetermined time has elapsed from the time that the fuel burning has terminated, so that combustion gases which otherwise would pass through the flue and which might contain harmful ingredients therein, will not be redirected to be used as a source of heat.

• Assignee: TIC; EDB-80-035343
• Patent Number(s): US 4163441
• OSTI ID: 5679114
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
BLOWERS
CONTROL EQUIPMENT
DESIGN
ELECTRIC CONTROLLERS
ENERGY
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FURNACES
GASEOUS WASTES
HEAT
HEAT RECOVERY EQUIPMENT
WASTE HEAT
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES