OS9-11 蓄熱器流路半径が進行波型熱音響エンジンの効率に及ぼす影響(OS9 動力エネルギーシステムにおける熱流動,分散と集中の共存)

概要

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The purpose of this investigation is to obtain an indicator for use in design of a high-efficiency thermoacoustic engine. The ratio of stack radius r_0 to thermal penetration depth δ is an important parameter that decides the performance of a thermoacoustic engine. We measured the onset temperture and the efficiency of a traveling wave thermoacoustic engine with changing r_0/δ. It was found that the onset temperature of the thermoacoustic engine depends on the ratio r_0/δ. The lowest onset temperature was obtained at r_0/δ=1.3. On the other hand, the highest efficiency was obtained at r_0/δ=0.9. These experimental results indicate that an onset temperature is not an appropriate index of the efficiency of a thermoacoustic engine.
一般社団法人日本機械学会の論文
2006-06-28