Effects of venturi mounting height on combustion characteristics of inshot burners
Conference
·
OSTI ID:357756
- Univ. of Oklahoma, Norman, OK (United States). School of Aerospace and Mechanical Engineering
An experimental study of the effects of the height at which the primary-air venturi is mounted relative to the fuel jet in a partially-premixed flame burner used in residential natural gas furnaces (inshot burner) on its flame structure and pollutant emission characteristics is presented. Measurements include primary-air entrainment rate, emission indices of CO and NOx, and in-flame radial profiles of temperature and local concentrations of CO and NOx. An increase in venturi mounting height above the manufacturer-specified standard value increases primary air entrainment by as much as 20%, although the variation was not continuous. The effects of venturi mounting height on the emission indices of NO and NOx is small (5--10%) and again is not systematic. The CO emission index, however shows a continuous increase (up to 10%) with the increase of venturi mounting height.
- Sponsoring Organization:
- Gas Research Inst., Chicago, IL (United States)
- OSTI ID:
- 357756
- Report Number(s):
- CONF-980213--
- Country of Publication:
- United States
- Language:
- English
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