E113 熱光発電システムに用いる高温作動マイクロセラミック触媒燃焼器の開発(OS1 マイクロエネルギー変換)

Abstract

A micro-scale catalytic combustor using high-precision ceramic tape-casting technology has been developed for high-temperature applications such as thermophotovoltaic power generation. Pd catalyst/nanoporous alumina support fabricated through anodic oxidation was employed for the catalyst layer. Combustor structure that gives much smaller temperature gradient with high fuel-conversion efficiency has been proposed based on a series of CFD analysis of heat and fluid flow and surface reaction. In combustion experiments with a prototype combustor, the wall temperature as high as 700℃ has been achieved. It is also found that the wall temperature gradient is significantly reduced with the present combustor structure.