Heat exchange apparatus for industrial furnaces

Patent · Tue May 20 04:00:00 EDT 1986

OSTI ID:5636476

Loukas, P W; Braune, R E; Fischer, E

A heat exchanger is described for heating air supplied to a burner, the heat exchanger including: first passage means through which combustion gas is exhausted from the burner; second passage means through which combustion air is supplied to the burner; the first and second passage means being arranged to transfer heat from the combustion gas to the combustion air; and at least one of the first and second passage means including helical guide means providing a substantially helical path along which fluid is directed through the at least one passage means; the helical guide means having a variable pitch which changes in a predetermined manner to control fluid pressure and velocity in the at least one passage means; the helical guide means being secured to an inner wall of the one passage means about which the helical guide means extends, and the helical guide means not extending outwardly entirely across the passage means such that a small gap is present between the outer edge of the helical guide means and an outer wall of the at least one passage means.

• Assignee: Advanced Combustion, Inc., Weston
• Patent Number(s): US 4589844
• OSTI ID: 5636476
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR FLOW
BURNERS
CONTROL
DESIGN
ENERGY TRANSFER
FLOW RATE
FLUE GAS
FLUID FLOW
FURNACES
GAS FLOW
GASEOUS WASTES
HEAT EXCHANGERS
HEAT TRANSFER
INDUSTRIAL PLANTS
PRESSURE CONTROL
WALLS
WASTES