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ID 31643
file
title alternative
An Improvement of Lean Combustion Characteristics of Heavy-Hydrocarbon Fuels with Hydrogen Addition
creator
Sakai, Yukio
subject
Lean Combustion
Hydrogen Addition
Flame Temperature
Extinction
Effective Equivalence Ratio
Tubular Flame
NDC
Technology. Engineering
abstract
The Lewis numbers of lean heavy-hydrocarbon fuels are larger than unity, and hence, their flames are prone to extinction in a shear flow, which occurs in a turbulent combustion. Here, propane is used as a representative fuel of heavy-hydrocarbon fuels because the Lewis number of lean propane/air mixtures is larger than unity, and an attempt to improve its combustion characteristics by hydrogen addition has been made. A tubular flame burner is used to evaluate its improvement, since a rotating, streched vortex flow is established in the burner. The results show that with hydrogen additon, the fuel concentration, the flame diameter and the flame temperatuire at extinction are reduced and its combustion characteristics are imporved. However, it is found that the effective equivalence ration at extinction cannot become so small as that of lean methane/air mixture, which has a Lewis number less than unity.
journal title
日本機械学會論文集. B編
volume
Volume 65
issue
Issue 637
start page
3191
end page
3195
date of issued
1999-09-25
publisher
一般社団法人日本機械学会
issn
0387-5016
ncid
language
jpn
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
社団法人日本機械学会
本文データは学協会の許諾に基づきCiNiiから複製したものである
relation is version of URL
http://ci.nii.ac.jp/naid/110002395621
department
Graduate School of Engineering



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