Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9435
Title: A comparison of the emission and impingement heat transfer of LPG-H 2 and CH 4-H 2 premixed flames
Authors: Zhen, HS
Cheung, CS 
Leung, CW 
Choy, YS 
Keywords: Flame impingement heat transfer
Hydrocarbon-hydrogen fuel
Pollutant emissions
Issue Date: 2012
Publisher: Pergamon-Elsevier Science Ltd
Source: International journal of hydrogen energy, 2012, v. 37, no. 14, p. 10947-10955 How to cite?
Journal: International Journal of Hydrogen Energy 
Abstract: Experiments were performed to add hydrogen to liquefied petroleum gas (LPG) and methane (CH 4) to compare the emission and impingement heat transfer behaviors of the resultant LPG-H 2-air and CH 4-H 2-air flames. Results show that as the mole fraction of hydrogen in the fuel mixture was increased from 0% to 50% at equivalence ratio of 1 and Reynolds number of 1500 for both flames, there is an increase in the laminar burning speed, flame temperature and NO x emission as well as a decrease in the CO emission. Also, as a result of the hydrogen addition and increased flame temperature, impingement heat transfer is enhanced. Comparison shows a more significant change in the laminar burning speed, temperature and CO/NO x emissions in the CH 4 flames, indicating a stronger effect of hydrogen addition on a lighter hydrocarbon fuel. Comparison also shows that the CH 4 flame at α = 0% has even better heat transfer than the LPG flame at α = 50%, because the longer CH 4 flame configures a wider wall jet layer, which significantly increases the integrated heat transfer rate.
URI: http://hdl.handle.net/10397/9435
DOI: 10.1016/j.ijhydene.2012.04.055
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