Determination of Combustion Gas Temperatures by Infrared Radiometry in Sooting and Nonsooting Flames
Abstract
Flame temperatures in nonsooting and sooting environments were successfully measured by radiometry for premixed propane oxygen laminar flames stabilized on a water cooled, porous sintered bronze burner. The measured temperatures in the nonsooting flames were compared with fine wire thermocouple measurements. The results show excellent agreement below 1700 K, and when the thermocouple measurements were corrected for radiation effects, the agreement was good for even higher temperatures. The benefits of radiometry are (1) the flow is not disturbed by an intruding probe, (2) calibration is easily done using a blackbody source, and (3) measurements can be made even with soot present. The theory involved in the radiometry measurements is discussed, as well as the energy balance calculations used to correct the thermocouple temperature measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1989
- Accession Number
- ADA205373
Entities
People
- Carmen M. Gracia-salcedo
- Valerie J. Lyons
Organizations
- National Aeronautics and Space Administration