As the demand grows for low-temperature waste heat recovery systems, organic Rankine cycles (ORCs), and other alternatives to traditional steam, Rankine cycles are becoming more common in industry. Although analytical tools exist that can predict the performance of a steam cycle in a given waste-heat application, the development of a similar tool for ORCs has been hampered by the large choice of possible working fluids. In this paper, two methods are presented with the aim of providing an estimate of the best performance possible for any ORC in a given industrial application. The first is a purely analytical approach assuming an idealized fluid, and the second compares real fluids through cycle simulations to select the most appropriate parameters for the application. The analytical approach provides a rough baseline for performance, while the simulation method refines the estimate to give predictions that are more consistent with the documented performance of ORC plants currently in operation. Together, the two approaches represent a robust means of quickly estimating the capability of an ORC plant and to allow quick comparisons with other technologies.
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April 2012
Technical Briefs
Two Algorithms for the Reliable Estimation of Organic Rankine Cycle Performance
Guillaume Becquin,
guillaume.becquin@ge.com
Guillaume Becquin
GE Global Research
, Freisinger Landstr. 50, Garching b. München, 85748 Germany
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Matthew Lehar
matthew.lehar@research.ge.com
Matthew Lehar
GE Global Research
, Freisinger Landstr. 50, Garching b. München, 85748 Germany
Search for other works by this author on:
Guillaume Becquin
GE Global Research
, Freisinger Landstr. 50, Garching b. München, 85748 Germany
guillaume.becquin@ge.com
Matthew Lehar
GE Global Research
, Freisinger Landstr. 50, Garching b. München, 85748 Germany
matthew.lehar@research.ge.com
J. Eng. Gas Turbines Power. Apr 2012, 134(4): 044504 (5 pages)
Published Online: February 6, 2012
Article history
Received:
June 8, 2011
Accepted:
August 2, 2011
Online:
February 6, 2012
Published:
February 6, 2012
Citation
Becquin, G., and Lehar, M. (February 6, 2012). "Two Algorithms for the Reliable Estimation of Organic Rankine Cycle Performance." ASME. J. Eng. Gas Turbines Power. April 2012; 134(4): 044504. https://doi.org/10.1115/1.4004839
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