Comparison of Different On-Site Measurement Methods and Their Practical Accuracy

Helmut Benigni*, Stefan Leithner, Helmut Jaberg, Mark Guggenberger

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

Turbines or pumps in hydropower plants achieve peak efficiencies of far more than 90% depending on the specific speed and the type of machine. Based on model tests or numerical simulations, the efficiency of a prototype machine has to be guaranteed and measured with the best measurement technique available. The choice of the appropriate efficiency measurement method does not only depend on the expected measurement uncertainties and tolerances set in a contract, it is also a question of the effort required for such a measuring campaign and of technical challenges, e.g., limitations imposed by plant operating conditions as draining of the system or constant load operation. Concerning hydraulic turbomachines, modern measuring technology offers different methods for efficiency measurements at a turbine unit. Primarily through the development of real-time capable data acquisition systems, it is possible to perform high-precision measurements rather quickly, whereby minimal downtimes can be achieved. In the first part, the specific measurement methods available in different standards are presented in an overview, and then in the second part, the achieved accuracies of a very complex thermodynamic measurement are compared with a low-cost clamp-on acoustic Doppler measurement using a concrete example.

Originalspracheenglisch
TitelFluid Applications and Systems; Fluid Measurement and Instrumentation
Herausgeber (Verlag)American Society of Mechanical Engineers(ASME)
Seiten1-9
Band1
ISBN (elektronisch)978-0-7918-8371-6
DOIs
PublikationsstatusVeröffentlicht - 12 Okt 2020
VeranstaltungASME 2020 Fluids Engineering Division Summer Meeting - Virtuell, USA / Vereinigte Staaten
Dauer: 13 Jul 202015 Okt 2020
Konferenznummer: 2020

Publikationsreihe

NameAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
Band1
ISSN (Print)0888-8116

Konferenz

KonferenzASME 2020 Fluids Engineering Division Summer Meeting
KurztitelFEDSM
LandUSA / Vereinigte Staaten
OrtVirtuell
Zeitraum13/07/2015/10/20

ASJC Scopus subject areas

  • !!Energy(all)
  • !!Mechanical Engineering

Fields of Expertise

  • Sustainable Systems

Treatment code (Nähere Zuordnung)

  • Application

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