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http://dx.doi.org/10.6112/kscfe.2013.18.4.035

EFFECTS OF CHANNEL ASPECT RATIO ON FLOW AND HEAT TRANSFER CHARACTERISTICS OF PRIMARY SURFACE HEAT EXCHANGER FOR ORC  

Sung, M.J. (Dept. of Mechanical Engineering, Graduate School, Kookmin Univ.)
Ahn, J. (School of Mechanical Systems Engineering, Kookmin Univ.)
Publication Information
Journal of computational fluids engineering / v.18, no.4, 2013 , pp. 35-40 More about this Journal
Abstract
A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger, which is designed for the evaporator and condenser of a geothermal ORC. Working fluid is geothermal water at hot side and R-245fa, which is a refrigerant designed for ORC, at cold side. Aspect ratio of the channel and Reynolds number are considered as design parameters. Nusselt number is presented for the Reynolds number ranging from 50 to 150 and compared to existing correlations. The result shows that higher aspect ratio channel gives better heat transfer performance within the range of investigation.
Keywords
ORC; Primary Surface Heat Exchanger; Aspect Ratio;
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Times Cited By KSCI : 8  (Citation Analysis)
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