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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

HEAT TRANSFER AND PRESSURE DROP CHARACTERISTICS OF ISOPROPANOL/Al2O3 NANOFLUID DURING FLOW IN A CYLINDRICAL MINICHANNEL

Get access (open in a dialog) DOI: 10.1615/IHTC16.cov.024165
pages 3607-3614

Resumo

The work reported here is part of a major research program directed to explore methods to improve heat transfer in advanced cooling systems, in particular for application in small scale, high density power systems. Here, the authors address the advantages of using nanofluids in tube flow configurations, based on experiments performed with a nanofluid of Al2O3 diluted in isopropanol in a circular tube with 3.5 mm inner diameter. The results show that despite both, the heat transfer coefficient and pressure drop, increase with Reynolds number, the addition of nanoparticles lead to earlier laminar-to-turbulent transition. However, the improvements are significant both in the laminar and turbulent flow conditions thus suggesting that significant enhancement of heat transfer ability can be obtained by nanoparticles additives during single phase flow.