 Multi-vane expanders: Internal-leakage lossesO. Badr, S.D. Probert and P.W. O'Callaghan Applied Energy, 1985, vol. 20, issue 1, 46 pages Abstract: Secondary flows of the working fluid via internal leakage paths in an MVE contribute significantly to its efficiency reduction. So the major leakage channels were indentified, and a mathematical model for predicting the flow rates via them has been developed. The behaviours of two existing designs of MVEs, using R-113 as the working fluid, were considered. Computer sub-routines were composed and employed to predict the effects of changes in the design and operating variables on the leakage characteristics of the expanders. The predictions indicate that the major internal-leakage flows, in the two MVEs considered, occur past the tips of the vanes. By maintaining continuous contact between the tips of the vanes and the stator cylinder, leakage efficiencies of over 75% are expected for the non-circular expander. The predictions also show by how much the leakage characteristics can be improved by running an existing expander at its optimal operating conditions. Alternatively for a proposed application, there will be an optimal choice of design parameters for an MVE so that the maximum efficiency can be achieved. Date: 1985 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:20:y:1985:i:1:p:1-46 Ordering information: This journal article can be ordered from Access Statistics for this article Applied Energy is currently edited by J. Yan More articles in Applied Energy from Elsevier |
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