TY - JOUR
T1 - Development and scale effects of small Swiss-roll combustors
AU - Kim, Nam Il
AU - Aizumi, Satoshi
AU - Yokomori, Takeshi
AU - Kato, Soichiro
AU - Fujimori, Toshiro
AU - Maruta, Kaoru
N1 - Funding Information:
This work was performed as the R&D project entitled “Micro-combustors as Heaters” which is supported by the New Energy and Industrial Technology Development Organization (NEDO), Japan.
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2007
Y1 - 2007
N2 - The configuration of Swiss-roll was adopted as a promising structure for the development of sub-millimetre scale combustors. In this study, the scaling effects are investigated both experimentally and analytically. Based on our first proto-type (64 mm in diameter), scaled-down combustors (45 mm) with different design parameters were fabricated; diameter of the combustor, top plate thickness, channel size and combustor material. A simple one-dimensional analytical model was constructed to interpret the combustion characteristics of the Swiss-roll combustors. Two energy equations for combustor body and mixture, along with species equations employing two-step global reaction model were solved. In spite of the simplicity of the present model, important characteristics of the combustors such as upper and lower flammability limits, effect of cap thickness on flammability limits were predicted well. Based on the analytical results, several smaller coin-size combustors (diameter 26 and 20 mm) were additionally developed and their characteristics were investigated. This study shows that the effects of design parameters are important in the practical development of smaller combustors.
AB - The configuration of Swiss-roll was adopted as a promising structure for the development of sub-millimetre scale combustors. In this study, the scaling effects are investigated both experimentally and analytically. Based on our first proto-type (64 mm in diameter), scaled-down combustors (45 mm) with different design parameters were fabricated; diameter of the combustor, top plate thickness, channel size and combustor material. A simple one-dimensional analytical model was constructed to interpret the combustion characteristics of the Swiss-roll combustors. Two energy equations for combustor body and mixture, along with species equations employing two-step global reaction model were solved. In spite of the simplicity of the present model, important characteristics of the combustors such as upper and lower flammability limits, effect of cap thickness on flammability limits were predicted well. Based on the analytical results, several smaller coin-size combustors (diameter 26 and 20 mm) were additionally developed and their characteristics were investigated. This study shows that the effects of design parameters are important in the practical development of smaller combustors.
KW - Flame stability
KW - Flammability limits
KW - Micro combustor
KW - Scale effect
KW - Swiss-roll combustor
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U2 - 10.1016/j.proci.2006.08.077
DO - 10.1016/j.proci.2006.08.077
M3 - Conference article
AN - SCOPUS:34249781839
VL - 31 II
SP - 3243
EP - 3250
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
SN - 1540-7489
T2 - 31st International Symposium on Combustion
Y2 - 5 August 2006 through 11 August 2006
ER -