 Ultra-low calorific gas combustion in a gradually-varied porous burner with annular heat recirculationFuqiang Song, Zhi Wen, Zhiyong Dong, Enyu Wang and Xunliang Liu Energy, 2017, vol. 119, issue C, 497-503 Abstract: Experimental studies on premixed combustion of ultra low calorific gas (LCG) in an axial and radial gradually-varied porous media burner with annular for heat recirculation were conducted. The effect of firing rate for different heating value of low calorific gas on temperature profiles, flames stability and CO emission was studied. The flame stability limits increased while the CO emission decreased with the increase of heating value of LCG. The flame located near the front of the inner tube at the upper flame stability limit and the corresponding temperature profiles decreased along the flow direction. The flame location moved from the upstream to the downstream with the increase of firing rate, and the corresponding temperature profiles of upper flame stability limits were much uniform than that of lower flame stability limit. The combustion and flow characteristics could be improved by using an annular heat recirculation, and an ultra-low calorific gas of 1.4 MJ/m3 can burn in the present porous burner. Keywords: Ultra-low calorific gas; Annular; Porous burner; Heat recirculation; Gradually-varied (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:119:y:2017:i:c:p:497-503 DOI: 10.1016/j.energy.2016.12.077 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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