空気エゼクタの実験的研究(第1報) : 面積比の性能に及ぼす影響

概要

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Experiments were performed on pneumatic ejector using the compressed air delivered by a Roots blower as driving fluid, to find the effect of the area ratio, i.e. the ratio of the cross-sectional area of the parallel part of the mixing tube to the nozzle exit area, upon the performance characteristics of the ejector. The nozzle used is of convergent type, and the six mixing tubes having different cross-sectional areas of the parallel part were attached to vary the area ratio of the ejector. The weight flow of the secondary air were allowed to vary by a valve, and experiments were thus conducted on constant delivery pressure. The results of the study were as follows. (1) There exists optimum area ratio to give maximum efficiency, and (2) mixing of the secondary air with primary air are undertaken at nearly constant pressure.
一般社団法人日本機械学会の論文
1955-04-25