Heat transfer and pressure drop correlations of microchannel heat exchangers with S-shaped and zigzag fins for carbon dioxide cycles

A new microchannel heat exchanger (MCHE) with S-shaped fins was developed using the three-dimensional computational fluid dynamics (3D CFD) FLUENT code. The MCHE provided 6–7 times lower pressure drop while maintaining heat-transfer performance that was almost equivalent to that of a conventional MC...

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Veröffentlicht in:	Experimental thermal and fluid science 2007-11, Vol.32 (2), p.560-570
Hauptverfasser:	Ngo, Tri Lam, Kato, Yasuyoshi, Nikitin, Konstantin, Ishizuka, Takao
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences CARBON DIOXIDE Computational fluid dynamics COMPUTERIZED SIMULATION Correlation CORRELATIONS Devices using thermal energy Energy Energy. Thermal use of fuels ENGINEERING Exact sciences and technology EXPERIMENTAL DATA FINS Fluid flow HEAT EXCHANGERS Heat exchangers (included heat transformers, condensers, cooling towers) HEAT TRANSFER Microchannel heat exchanger NUSSELT NUMBER PRANDTL NUMBER PRESSURE DROP Recuperator REYNOLDS NUMBER Standard deviation Supercritical CO 2 THERMAL HYDRAULICS Three dimensional THREE-DIMENSIONAL CALCULATIONS
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