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Proceedings of CHT-12. ICHMT International Symposium on Advances in Computational Heat Transfer.
July, 1-6, 2012, Bath, England

DOI: 10.1615/ICHMT.2012.CHT-12


ISBN: 978-1-56700-303-1

ISSN: 2578-5486

NUMERICAL INVESTIGATION OF NANOFLUID FLOW AND HEAT TRANSFER IN A PLATE HEAT EXCHANGER

pages 837-854
DOI: 10.1615/ICHMT.2012.CHT-12.510
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ABSTRACT

This paper presents a numerical investigation of the flow and heat transfer behavior of two nanofluids, namely CuO-water and Al2O3-water, inside a plate heat exchanger. Both laminar and turbulent flows are studied under steady state conditions. In the turbulent regime the RANS-based Realizable k−ε turbulence model was used. The homogeneous single-phase fluid model was employed to characterize the nanofluids. All fluid properties were considered temperature dependent. The adopted unstructured mesh possesses approximately 9.63×106 elements and was used for both laminar and turbulent flows. Results show that a considerable heat transfer enhancement was achieved using these nanofluids and the energy-based performance comparisons indicate that some of them do represent a more efficient heat transfer medium for this type of application. In general, all nanofluids cause higher pressure losses due to friction compared to that of water.

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