Performance measurements on a Pelton turbine model

Stamatelos, FG; Anagnostopoulos, JS; Papantonis, DE

dc.contributor.author	Stamatelos, FG	en
dc.contributor.author	Anagnostopoulos, JS	en
dc.contributor.author	Papantonis, DE	en
dc.date.accessioned	2014-03-01T02:05:27Z
dc.date.available	2014-03-01T02:05:27Z
dc.date.issued	2011	en
dc.identifier.issn	0957-6509	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29486
dc.subject	Pelton turbine model	en
dc.subject	performance measurements	en
dc.subject	runner geometry	en
dc.subject	turbine hillcharts	en
dc.subject	mechanical losses	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	FLOW	en
dc.subject.other	BUCKET	en
dc.subject.other	JET	en
dc.title	Performance measurements on a Pelton turbine model	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Pelton hydraulic turbines are impulse-type turbomachines commonly used in hydroelectric plants with medium-to-high water head and in various energy recovery applications. The aim of the present work is to provide detailed performance measurements on a Pelton turbine model, along with the design and geometrical dimensions of its runner/buckets and injectors. Such a complete set of data would be useful for further development and evaluation of numerical modelling tools of the complex unsteady free-surface flow developed in the turbine, and is missing from the literature. The two-nozzle Pelton model was designed using standard guidelines and was fully constructed in the Laboratory of Hydraulic Turbomachines, NTUA. The measurements include the net water head and flowrate, the injector characteristic curves, and the torque and rotation speed of the runner, from which the corresponding overall efficiency and shaft power are computed. The model was tested with one injector (upper or lower) and with both injectors in operation, using either constant or variable rotation speed mode. The comparative results were satisfactory and in line with the theory, verifying similarity and repeatability, and allowing for an estimation of mechanical losses. The measurements covered the entire operation range of the turbine, in order to draw complete hillcharts for various operation modes.	en
heal.publisher	PROFESSIONAL ENGINEERING PUBLISHING LTD	en
heal.journalName	PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY	en
dc.identifier.isi	ISI:000291585000013	en
dc.identifier.volume	225	en
dc.identifier.issue	A3	en
dc.identifier.spage	351	en
dc.identifier.epage	362	en