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一、前言 回收工业低温(t<150℃)余热发电或作其它动力,能收到良好的节能效果。一般采用低沸点工质,用向心透平作膨胀机较为合宜。向心透平设计中,大多沿用轴流透平的叶栅资料,经保角变换而得.向心环形叶栅资料很少,有待进一步开拓。本文用时间相关法编程对向心环形叶栅作流场计算,用附面层原理计算叶栅叶型损失,并作了二套叶栅的吹风试验,结果符合较好,提供了向心环形叶栅的一种计算方法。
I. Preface Recovery of industrial low temperature (t <150 ℃) waste heat power generation or other power, can receive good energy-saving effect. The general use of low boiling point refrigerant, to the heart Turbo expander more appropriate. To the heart of the turbine design, most of the use of axial turbine cascades data, derived from the conformal transformation. Centripetal ring cascade little information to be further developed. In this paper, the time-dependent method is used to calculate the flow field of the centripetal ring cascade, and the loss of the cascade blades is calculated by the principle of surface coating. Two sets of cascade blowing tests are performed. The results are in good agreement. A method of calculating cascades.