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Title: Development of Empirical Correlation for Heat Transfer to Nanofluids
Authors: Sonage, B.K.
Mohanan, P.
Issue Date: 2017
Citation: Heat Transfer - Asian Research, 2017, Vol.46, 4, pp.305-315
Abstract: Nanofluids are emerging as alternative fluids for heat transfer applications due to enhanced thermal properties. Several correlations are available in open literature for heat transfer coefficient (HTC) and thermophysical properties of nanofluids. Reliability of correlations that use effective properties for estimation of HTC needs to be checked. Comparison of experimental HTC and that estimated from existing correlations is the main objective of the present study. An empirical correlation is developed with experimental data of the HTC for zinc water and zinc oxide water nanofluids. Experimental HTC is compared with that estimated from developed correlation and existing correlations. The range of Re considered for the study is 4000 to 18,000. Comparison indicated large deviation in experimental values and the values estimated from existing correlations. Based on comparison results, it can be concluded that the single-phase models of forced convective heat transfer cannot be extended to nanofluids. 2016 Wiley Periodicals, Inc.
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