触媒機能を有するフィンにおける反応・伝熱特性 : 第1報, 吸熱反応を伴う場合の理論解析〔熱工学, 内燃機関, 動力など〕

概要

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Reaction and heat transfer characteristics of catalyst-coated fins, which are used to circumvent low catalyst loadings in wall-supported catalytic reactors, are investigated theoretically in an attempt to identify important non-dimensional parameters and to examine their effects on fin performance in the practically possible range for endothermic reaction cases. The fin efficiency of reaction rate, which is defined as a measure of the reaction performance of catalyst-coated fins, is found to decrease significantly more than that of convection heat transfer with the increase of reaction rate constant and/or heat transfer coefficient because of the exponential dependency of the reaction rate on temperature, in the case that the reaction rate is governed by chemical kinetics. The increase of gas bulk temperature up to that of the fin base increases the fin efficiency of reaction rate, under chemical kinetics limitation, due to convection heating of fin for high heat transfer coefficient while the fin temperature is decreasing along the structure due to heat absorption by reaction. The increase of the effect of the convective mass transport on reaction rate increases the fin efficiency of reaction rate.
一般社団法人日本機械学会の論文
1998-04-25