An experimental study of combustion and heat transfer in porous radiant burners

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:7005502

Sathe, S B; Kulkarni, M R; Peck, R E; Tong, T W

We have studied experimentally the stability and heat transfer characteristics of lean premixed, methane-air flames embedded in a porous layer. The work is directly relevant to understanding the performance and operating behavior of porous radiant burners (PRB). Flame speed and radiant output data were obtained for different stoichiometries and flame locations in porous ceramic foam. The results indicate that stable combustion at elevated flame speeds can be maintained in two different spatial domains: one spanning the upstream half of the porous are also found to increase as the flame is shifted toward the middle of the porous layer. A one-dimensional laminar premixed flame model incorporating a radiatively participating inert porous medium was used to describe the test conditions. Calculations using a one-step reaction confirmed the observation of two stable flame regions. The predicted flame speeds and radiant output agree favorably with the experimental trends. 20 refs., 4 figs.

• Research Organization: Arizona State Univ., Tempe, AZ (USA). Dept. of Mechanical and Aerospace Engineering
• Sponsoring Organization: DOE/ER
• DOE Contract Number: FG02-87ER13697
• OSTI ID: 7005502
• Report Number(s): CONF-8910289-6; ON: DE90010032
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
421000* -- Engineering-- Combustion Systems
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ADIABATIC PROCESSES
AIR
ALKANES
BURNERS
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
CONVECTION
EFFICIENCY
ENERGY EFFICIENCY
ENERGY TRANSFER
FLAME PROPAGATION
FLUID FLOW
FLUIDS
GASES
HEAT TRANSFER
HYDROCARBONS
KINETICS
LAMINAR FLOW
LAYERS
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
METHANE
ONE-DIMENSIONAL CALCULATIONS
OPERATION
ORGANIC COMPOUNDS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
POROUS MATERIALS
REACTION KINETICS
STABILITY
STOICHIOMETRY
TEMPERATURE GRADIENTS
TESTING
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMODYNAMICS