Search results for: stage%20efficiency

• Solid State Phenomena

  Journals

  ISSN: 1012-0394

• On the internal efficiency of a turbine stage: classical and CFD definitions

  Publication

  • L. Nastałek
  • M. Karcz
  • D. Sławiński
  • W. Zakrzewski
  • P. Ziółkowski
  • C. Szyrejko
  • J. Topolski
  • J. Badur
  • R. Werner

  - Transactions of the Institute of Fluid-Flow Machinery - Year 2012

  Almost entire fleet of steam turbines in Poland was designed between 1950 – 1980 with the use of the so-called zero dimensional (0D) calculation tools. For several years, design and modernization of the turbines occur in assistance with the state of the art methods that describe working fluid flow field based on 3D models and CFD codes. This cooperation between 0D and 3D codes requires exchange of overall, integral information...

• SOLID STATE IONICS

  Journals

  ISSN: 0167-2738 , eISSN: 1872-7689

• Partial Admission Stages of High Efficiency for a Microturbine

  Publication

  • K. Kosowski
  • R. Stępień
  • W. Włodarski
  • M. Piwowarski
  • Ł. Hirt

  - Advances in Vibration Engineering - Year 2014

  The paper presents the results of a design analysis of a microturbine for a cogeneration micro-power plant working in accordance with organic Rankine cycle. The heat power of the plant is assumed equal to 20kW and the corresponding available electric output is estimated to be about 3 kW. After the design analysis, the axial turbine with partial admission in all stages was built and tested experimentally. Special attentionwas paid...

• Partial Admission Stages of High Efficiency for a Microturbine

  Publication

  • K. Kosowski
  • R. Stępień
  • W. Włodarski
  • M. Piwowarski
  • Ł. Hirt

  - Year 2012

  The paper presents the results of a design analysis of a micro-turbine for a co-generation micro-power plant working in accordance with organic Rankine cycle. The heat power of the plant is assumed equal to 20kW and the corresponding available electric output is estimated to be about 3kW. After the design analysis, the axial turbine with partial admission in all stages was built and tested experimentally. Special attention was...

• Energy Efficiency

  Journals

  ISSN: 1570-646X , eISSN: 1570-6478

• Efficiency of European public higher education institutions: a two-stage multicountry approach

  Publication

  • J. Wolszczak-Derlacz
  • A. Parteka

  - SCIENTOMETRICS - Year 2011

  The purpose of this study is to examine efficiency and its determinants in a set of higher education institutions (HEIs) from several European countries by means of non-parametric frontier techniques. Our analysis is based on a sample of 259 public HEIs from 7 European countries across the time period of 2001-2005. We conduct a two-stage DEA analysis (Simar and Wilson in J Economet 136:31-64, 2007), first evaluating DEA scores...

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• JOURNAL OF SOLID STATE ELECTROCHEMISTRY

  Journals

  ISSN: 1432-8488 , eISSN: 1433-0768

• Binder availability and blending efficiency of reclaimed asphalt: A state-of-the-art review

  Publication

  • Y. Ma
  • K. Zheng
  • Y. Ding
  • P. Polaczyk
  • X. Jiang
  • B. Huang

  - Construction and Building Materials - Year 2022

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• An evaluation and explanation of (in)efficiency in higher education institutions in Europe and the U.S. with the application of two-stage semi-parametric DEA

  Publication

  • J. Wolszczak-Derlacz

  - Year 2014

  This study uses data envelopment analysis (DEA) to evaluate the relative efficiency of 500 higher education institutions (HEIs) in ten European countries and the U.S. for the period between 2000 and 2010. Efficiency scores are determined using different input-output sets (inputs: total revenue, academic staff, administration staff, total number of students; outputs: total number of publications, number of scientific articles, graduates)...

  Full text to download in external service