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Theoretical Analysis of Loss Coefficients Affecting Pelton Turbine Performance

Authors
Jung, In HyukPark, Joo HoonKim, Young SooShin, YouhwanChung, Jin Taek
Issue Date
5월-2018
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Keywords
Pelton Turbine; PRO(Pressure Retarded Osmosis); Bucket Friction Loss Coefficient; Windage Loss Coefficient
Citation
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B, v.42, no.5, pp.325 - 331
Indexed
SCOPUS
KCI
Journal Title
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B
Volume
42
Number
5
Start Page
325
End Page
331
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/75641
DOI
10.3795/KSME-B.2018.42.6.000
ISSN
1226-4881
Abstract
To analyze the performance of Pelton turbines theoretically, the conventional loss models were examined and the theoretical formula suitable for the analysis was selected. A theoretical analysis method is presented and compared with the performance test results according to casing shape and volume to verify the theoretical analysis method. The performance test was performed for rectangular and circular casing, and the amount of windage loss in casing was analyzed quantitatively by casing design parameters through the proposed theoretical method. It is considered that the casing volume and shape have a dominant influence on the windage loss. As casing volume decreases, the windage loss decreases, and the efficiency increases inversely. The results of this study can be applied to the analysis and evaluation of losses occurring in Pelton turbines. Especially, the study will be useful for casing design that minimizes windage loss.
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