Please use this identifier to cite or link to this item:
Title: Characterization of wall temperature and radiation power through cylindrical dump micro-combustors
Authors: Li, J.
Chou, S.K. 
Li, Z.W. 
Yang, W.M. 
Keywords: Cylindrical dump micro-combustor
Radiation power
Wall temperature
Issue Date: Aug-2009
Citation: Li, J., Chou, S.K., Li, Z.W., Yang, W.M. (2009-08). Characterization of wall temperature and radiation power through cylindrical dump micro-combustors. Combustion and Flame 156 (8) : 1587-1593. ScholarBank@NUS Repository.
Abstract: The micro-combustor (emitter) is a key component of the micro-thermophotovoltaic (TPV) system. An experimental study on the wall temperature and radiation power through the wall of a series of cylindrical dump micro-combustors was carried out. The effects of combustor diameter (d), combustor length (L), step height (s), flow velocity (u0) and fuel-air equivalence ratio (Φ) on the wall temperature distribution were investigated. 'Emitter efficiency' was defined and quantified based on the measured wall temperature. It was demonstrated that for this particular configuration, that is, a cylindrical micro-combustor with a backward-facing step, the two dimensionless ratios - L/d and s/d, are sufficient to determine the emitter efficiency, provided the flow velocity (Ue) and Φ are known. Based on this result, the effects of the dimensionless step height (s/d) on the emitter efficiency were examined. It was shown that such a sudden flow expansion in the dump combustors does not favor the radiation through the outer wall. Finally, the position of the highest wall temperature and its variation with the flow Reynolds number were discussed. It was noted that the Reynolds number and the relative flow expansion (s/d) alone are inadequate to determine the relative position of the highest wall temperature. © 2009 The Combustion Institute.
Source Title: Combustion and Flame
ISSN: 00102180
DOI: 10.1016/j.combustflame.2009.05.003
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Oct 15, 2019


checked on Oct 15, 2019

Page view(s)

checked on Oct 12, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.