Performance of an automotive car radiator Operated with nanofluid-based coolant

Kumar, Shiva and Dinesha, P and Gaggad, Ashutosh and Mehrotra, Kshitij (2018) Performance of an automotive car radiator Operated with nanofluid-based coolant. Heat Transfer Research, 49 (16). pp. 1527-1543. ISSN 1064-2285

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Abstract

Coolants such as water and ethylene glycol have been used traditionally in automotive car radiators. However, due to their low thermal conductivity a class of fl uids known as nanofl uids is used to enhance heat transfer characteristics. Nanofl uids are suspended metallic or nonmetallic oxide nanoparticles in traditional heat transfer fl uids that have bulk thermal conductivity higher than that of the base fl uids. This experimental study is based on the application of an aluminum oxide (Al2O3)-based nanofl uid with water as a base fl uid in automotive car radiators. The eff ect on the overall heat transfer coeffi - cient, heat transfer rate, and pressure drop are calculated by varying the percentage volume fraction of nanoparticles in water, volume fl ow rate of the nanofl uid, and also the inlet temperature of the nanofl uid. It is observed that as the nanoparticle concentration increased, the overall heat transfer coeffi cient and heat transfer rate increase, peaking at 0.8%. As the inlet temperature of the nanofl uid increases, the overall heat transfer coeffi cient was found to be increasing. For a nanoparticle concentration of 0.8% with water, for a fl ow rate of 3 LPM and for inlet temperature of 80oC, the overall heat transfer coeffi cient and heat transfer rates were increased by 36.27% and 25.95%, respectively, when compared to pure water.

Item Type: Article
Uncontrolled Keywords: radiator, nanofl uid, thermal conductivity, heat transfer coeffi cient, volume fraction
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 11 Aug 2018 06:30
Last Modified: 11 Aug 2018 06:30
URI: http://eprints.manipal.edu/id/eprint/151750

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