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Study on an Axial Flow Hydraulic Turbine with Collection Device
Joint Authors
Nishi, Yasuyuki
Inagaki, Terumi
Kikuchi, Norio
Okubo, Kaoru
Source
International Journal of Rotating Machinery
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-22
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
We propose a new type of portable hydraulic turbine that uses the kinetic energy of flow in open channels.
The turbine comprises a runner with an appended collection device that includes a diffuser section in an attempt to improve the output by catching and accelerating the flow.
With such turbines, the performance of the collection device, and a composite body comprising the runner and collection device were studied using numerical analysis.
Among four stand-alone collection devices, the inlet velocity ratio was most improved by the collection device featuring an inlet nozzle and brim.
The inlet velocity ratio of the composite body was significantly lower than that of the stand-alone collection device, owing to the resistance of the runner itself, the decreased diffuser pressure recovery coefficient, and the increased backpressure coefficient.
However, at the maximum output tip speed ratio, the inlet velocity ratio and the loading coefficient were approximately 31% and 22% higher, respectively, for the composite body than for the isolated runner.
In particular, the input power coefficient significantly increased (by approximately 2.76 times) owing to the increase in the inlet velocity ratio.
Verification tests were also conducted in a real canal to establish the actual effectiveness of the turbine.
American Psychological Association (APA)
Nishi, Yasuyuki& Inagaki, Terumi& Okubo, Kaoru& Kikuchi, Norio. 2014. Study on an Axial Flow Hydraulic Turbine with Collection Device. International Journal of Rotating Machinery،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-462219
Modern Language Association (MLA)
Nishi, Yasuyuki…[et al.]. Study on an Axial Flow Hydraulic Turbine with Collection Device. International Journal of Rotating Machinery No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-462219
American Medical Association (AMA)
Nishi, Yasuyuki& Inagaki, Terumi& Okubo, Kaoru& Kikuchi, Norio. Study on an Axial Flow Hydraulic Turbine with Collection Device. International Journal of Rotating Machinery. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-462219
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-462219