著者

FUJII Terushige OHTA Jun-ichi AKAGAWA Koji NAKAMURA Toshi ASANO Hitoshi

出版者

日本機械学会

雑誌

The Japan Society of Mechanical Engineers, Series II (ISSN:09148817)

巻号頁・発行日

vol.35, no.2, pp.319-324, 1992-02

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From the viewpoint of energy conservation and the development of new energy resources,it is important to utilize geothermal resources and waste heat from factories. Among energy conversion device,there is a radial outflow reaction turbine,i.e.,Hero's turbine. Performance characteristics of Hero's turbine are analytically and experimentally clarified for flashing expansion of initially subcooled hot water. It is found that: (a)there is an optimum number of revolutions at which maximum tubine efficiency can be obtained; (b)Hero's turbine internal efficiency can be expressed as an algebraic equation and (c)nozzle loss accounts for almost 90% of the total turbine loss.