Numerical Analysis of Heat Transfer Performances of Ionic Liquid and Ionanofluids with Temperature-Dependent Thermophysical Properties

Amra Hasečić, Jaber Hmoud Almutairi, Siniša Bikić and Ejub Džaferović
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Amra Hasečić: Faculty of Mechanical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina
Jaber Hmoud Almutairi: The Public Authority for Applied Education and Training, College of Technological Studies, Shuwaikh 70654, Kuwait
Siniša Bikić: Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, Serbia
Ejub Džaferović: Faculty of Mechanical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina

Energies, 2021, vol. 14, issue 24, 1-14

Abstract: The heat transfer performances of ionic liquids [C 4 mpyrr][NTf 2 ] and ionanofluids with Al 2 O 3 nanoparticles under a laminar flow regime, and with constant heat flux on the tube wall is numerically modeled and analyzed for three values of initial/inlet temperature and for two Reynolds numbers. Heat transfer characteristics were considered by analyzing the temperature distribution along the upper wall, as well as by analyzing the Nusselt number and heat transfer coefficient. The results obtained numerically were validated using Shah’s equation for ionic liquid. Thermophysical properties were temperature-dependent, and obtained by curve-fitting the experimental values of the thermophysical properties. Furthermore, the same set of results was calculated for the ionic liquid and ionanofluids with constant thermophysical properties. It is concluded that the assumption that thermophysical properties are constant has a significant influence on the heat transfer performance parameters of both ionic liquid and ionanofluids, and therefore such assumptions should not be made in research.

Keywords: ionanofluids; computational fluid dynamics; heat transfer; Nusselt number; temperature-dependent properties (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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