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The Effect of Turbulence Intensity on the NOx Formation of Hydrogen Coaxial Jet Turbulent Diffusion Flames
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 Title & Authors
The Effect of Turbulence Intensity on the NOx Formation of Hydrogen Coaxial Jet Turbulent Diffusion Flames
Han, Ji-Ung; Jeong, Yeong-Sik; Lee, Chang-Eon;
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 Abstract
Experimental investigations were conducted for two hydrogen-nitrogen coaxial jet diffusion flames. A flame was a conventional coaxial jet diffusion flame and the other was a coaxial jet diffusion flame of which ambient air-jet turbulence was intensified. In this study, firstly two kinds of NOx measuring system were campared by using different convertors, secondly the NOx formation characteristics were investigated in order to examine the effect of turbulence intensity. In this study it is known that stainless convertor has some problem in the converting process from NOto NO in fuel rich region but molybdenum convertor can detect the amount of NOx correctly. The increase of turbulence intensity reduces the thermal NOx less than a half in our experiment and this effect is conspicuous near the nozzle. The conversion rate from NO to NOand the portion of NOamong NOx are increased with turbulence intensity. These NOx measurements will help to understand the influences of turbulence intensity on NOx formation.
 Keywords
Coaxial Jet Turbulent Diffusion Flames;Hydrogen Flame;Thermal NOx;Turbulence Intensity;
 Language
Korean
 Cited by
1.
저공해와 고안정성을 위한 신개념의 사이클론 제트 하이브리드 연소기의 연소특성,정원석;황철홍;이규영;이창언;

대한기계학회논문집B, 2004. vol.28. 2, pp.146-153 crossref(new window)
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