Enhancement of Heat Transfer Coefficient in an Automobile Radiator Using Ethylene Glycol Water Based ZnoNanofluids-An Experimental Investigation
M. Chandra Sekhara Reddy

M. Chandra Sekhara Reddy, Department of Mechanical Engineering, SV College of Engineering, Karkamadi Road, Tirupati (Andhra Pradesh), India.
Manuscript received on 27 February 2019 | Revised Manuscript received on 14 March 2019 | Manuscript Published on 17 March 2019 | PP: 117-120 | Volume-7 Issue-ICETESM18, March 2019 | Retrieval Number: ICETESM28|19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: A novel enhancement scheme of heat transfer coefficient is demonstrated experimentally using ZnO nanofluid flowing in a commercially available car radiator under turbulent flow conditions. In the present investigation ZnO nanofluidis prepared by mixing ethylene glycol and distilled water in the ratio of 40: 80 percent by volume. The heat transfer experiments were conducted in the range of volume concentrations from 0.01% to 0.035 % (by volume) and in the range of Reynolds number from 3000 to 10000. Experimental studies were conducted with base fluid (40:80% ethylene glycol and water mixture) followed by nanofluids. The experimental results express the increased fluid-circulated rate which can be enhanced based on performance of heat transfer while the temperature ranges of inlet fluid to radiator as trivial affects. Moreover, the usage of nano-fluids with very low concentrations can improves the efficiency of heat transfer up to 40% over the base fluids. Results are illustrated based on several factor such as Nusselt number, non-dimensional heat transfer coefficient, as a function of Reynolds number for several concentrations of nano-fluids.
Keywords: Automotive Cooling System, Heat Transfer Enhancement, Nanofluids, Car Radiator.
Scope of the Article: Heat Transfer