TY - JOUR
T1 - Combustion characteristics in a small-scale reactor with catalyst segmentation and cavities
AU - Li, Yueh Heng
AU - Chen, Guan Bang
AU - Wu, Fang Hsien
AU - Cheng, Tsarng Sheng
AU - Chao, Yei Chin
N1 - Funding Information:
This research was partially supported by the National Science Council of Republic of China under Grant numbers NSC 95-2221-E-006 -392 –MY3 (YCC) and NSC 100-2221-E-216-012-MY2 (TSC) . Computer time and numerical packages provided by the National Center for High-Performance Computing, Taiwan (NCHCTaiwan), are gratefully acknowledged.
PY - 2013
Y1 - 2013
N2 - Hydrogen-air combustion characteristics of a small-scale reactor with different catalyst layouts and configurations are experimentally and numerically investigated. Four different platinum catalyst layouts are used to investigate the effect of catalyst segmentation on combustion performance. It is found that combustion phenomena are strongly related to the variations of inflow velocity, equivalence ratio, and length of catalyst segment. The existence of hetero- and homogeneous reactions in the combustor relies on sufficient catalytically induced exothermicity as well as sufficient hydrogen in the remaining mixture. Besides, the multi-segment catalyst with cavities appreciably extends the stable operating range of catalytic combustion in a small-scale combustor for a wide range of inflow velocities. Nevertheless, gas-phase reaction can be sustained and anchored by the existence of cavity in a small-scale system. The reactor with proposed mechanisms can be applied to various small-scale power, heat generation, and propulsion systems.
AB - Hydrogen-air combustion characteristics of a small-scale reactor with different catalyst layouts and configurations are experimentally and numerically investigated. Four different platinum catalyst layouts are used to investigate the effect of catalyst segmentation on combustion performance. It is found that combustion phenomena are strongly related to the variations of inflow velocity, equivalence ratio, and length of catalyst segment. The existence of hetero- and homogeneous reactions in the combustor relies on sufficient catalytically induced exothermicity as well as sufficient hydrogen in the remaining mixture. Besides, the multi-segment catalyst with cavities appreciably extends the stable operating range of catalytic combustion in a small-scale combustor for a wide range of inflow velocities. Nevertheless, gas-phase reaction can be sustained and anchored by the existence of cavity in a small-scale system. The reactor with proposed mechanisms can be applied to various small-scale power, heat generation, and propulsion systems.
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U2 - 10.1016/j.proci.2012.06.058
DO - 10.1016/j.proci.2012.06.058
M3 - Article
AN - SCOPUS:84872011247
SN - 1540-7489
VL - 34
SP - 2253
EP - 2259
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
IS - 2
ER -