Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43657
Title: Emission of impinging biogas/air premixed flame with hydrogen enrichment
Authors: Zhen, HS
Wei, ZL
Leung, CW 
Cheung, CS 
Huang, ZH
Keywords: CO/NOx emissions
Flame impingement
Pollutants emission
Issue Date: 2016
Publisher: Pergamon Press
Source: International journal of hydrogen energy, 2016, v. 41, no. 3, p. 2087-2095 How to cite?
Journal: International journal of hydrogen energy 
Abstract: Overall pollutants emission from impinging premixed and diffusion flames were measured by investigating its dependence on burner-plate separation distance, fraction of hydrogen in the biogas-hydrogen mixture, Reynolds number and equivalence ratio. Results show that premixed flame is cleaner with both low CO and NOx emissions than diffusion flame, either under open or impingement conditions. Impinging flame emits more CO while less NOx than the corresponding open flame. For both premixed and diffusion flames, CO emission firstly increases at separation distance of H < 15 mm and then decreases at H > 15 mm. While NOx emission monotonically increases with H. NOx emission also increases with fraction of hydrogen, equivalence ratio and Reynolds number, due to its dependence on both temperature and volume of the flame. The lowest CO emission occurs at the slightly rich condition at equivalence ratio of 1.2. This low CO emitting behavior is favorable for cooking applications, where slightly fuel rich flames are adopted.
URI: http://hdl.handle.net/10397/43657
ISSN: 0360-3199
EISSN: 1879-3487
DOI: 10.1016/j.ijhydene.2015.11.037
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