Exergy analysis of second-generation micro heat sinks under single-phase and flow boiling conditions
by Ali Kosar
International Journal of Exergy (IJEX), Vol. 7, No. 2, 2010

Abstract: A parametric study of exergy efficiency was conducted for five micro pin fin heat sinks of different spacing and shapes. Of the four micro pin fin heat sinks tested under single-phase flow conditions, those with better heat transfer performance yielded superior exergy efficiencies. The use of R-123 in place of water as working fluid was found to enhance exergetic performance at the expense of reduced heat transfer performance. The exergy analysis was also extended to the flow boiling of R-123 in an additional hydrofoil-based micro pin fin heat sink. It was found that exergy efficiencies decreased with mass velocity.

Online publication date: Tue, 26-Jan-2010

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