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

Conference · Sun Jan 01 00:00:00 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
• Resource Relation: Conference: Western States Section meeting of the Combustion Institute, Livermore, CA (USA), 23-24 Oct 1989
• Country of Publication: United States
• Language: English

Related Subjects

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