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Development and Testing of a Rotary-Vane Two-Phase Refrigerating Expander

[+] Author Affiliations
A. M. Mahmoud, S. A. Sherif, W. E. Lear

University of Florida, Gainesville, FL

Paper No. IMECE2009-13234, pp. 355-365; 11 pages
doi:10.1115/IMECE2009-13234
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 6: Emerging Technologies: Alternative Energy Systems; Energy Systems: Analysis, Thermodynamics and Sustainability
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4379-6 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

Rotary-vane positive displacement machines have played an important role for many years in refrigeration and air compression applications because of their inherent simplicity and reliability. This paper details the development and testing of a rotary-vane two-phase expander for the purpose of work recovery in an air-cooled chiller. The paper describes the methodology used to design an expander for two-phase flow from a single-phase compressor and an air-motor. Input from detailed analytical models developed by the authors are used to improve the expander design with respect to internal leakage losses and friction. Controls and performance testing are also presented. Directions for future research are highlighted.

Copyright © 2009 by ASME
Topics: Testing

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