Heat recovery system with combustion gas accelerator

Patent · Tue Aug 19 00:00:00 EDT 1986

OSTI ID:5340691

Zacuto, P

A system is described for recovering heat from high temperature combustion gases generated by a heater such as for example a warm air furnace, boiler or the like. The system consists of: a first conduit leading to a chimney, a second conduit leading to a heat recovery unit which in turn is connected to a vent; a T connection interconnecting the first and second conduits to each other and to the heater. The first conduit has a natural draft induced therein by virtue of its connection to the chimney; means associated with the heat recovery unit for artificially inducing a draft in the second conduit to overcome the natural draft in the first conduit and to thereby divert combustion gases from the first conduit through the second conduit, the heat recovery unit and the vent; and accelerator means for increasing the velocity of the combustion gases flowing past the first conduit into the second conduit, the accelerator means comprising a tapered third conduit having an inlet end which is larger than its outlet end. The third conduit is located within the T connection with the inlet end arranged to receive combustion gases from the heater and with the outlet end arranged to direct the combustion gases past the first conduit and into the second conduit.

• Assignee: Heat Extractor, Inc., Melrose, MA
• Patent Number(s): US 4606399
• OSTI ID: 5340691
• Resource Relation: Patent File Date: Filed date 17 Jul 1985
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BOILERS
HEAT RECOVERY EQUIPMENT
FLUE GAS
HEAT RECOVERY
FURNACES
DESIGN
OPERATION
CHIMNEYS
DRAFT CONTROL SYSTEMS
FLOW RATE
GAS FLOW
VENTS
WASTE HEAT UTILIZATION
CONTROL EQUIPMENT
ENERGY RECOVERY
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
GASEOUS WASTES
RECOVERY
WASTE PRODUCT UTILIZATION
WASTES
421000* - Engineering- Combustion Systems