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Open AccessArticle

Cooling Performance of a Novel Circulatory Flow Concentric Multi-Channel Heat Sink with Nanofluids

1
Department of Mechanical Engineering; Lovely Professional University, Phagwara, Punjab-14411, India
2
Faculty of Mechanical Engineering, Shahrood University of Technology, POB- Shahrood 3619995161, Iran
3
Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur 440010, India
4
Kalman Kando Faculty of Electrical Engineering, Obuda University, 1034 Budapest, Hungary
5
Institute of Structural Mechanics (ISM), Bauhaus-Universität Weimar, 99423 Weimar, Germany
6
Thuringian Institute of Sustainability and Climate Protection, 07743 Jena, Germany
7
Faculty of Civil Engineering, Technische Universität Dresden, 01069 Dresden, Germany
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(4), 647; https://doi.org/10.3390/nano10040647
Received: 28 December 2019 / Revised: 25 February 2020 / Accepted: 27 February 2020 / Published: 31 March 2020
(This article belongs to the Special Issue Applications of Nanofluids)
Heat rejection from electronic devices such as processors necessitates a high heat removal rate. The present study focuses on liquid-cooled novel heat sink geometry made from four channels (width 4 mm and depth 3.5 mm) configured in a concentric shape with alternate flow passages (slot of 3 mm gap). In this study, the cooling performance of the heat sink was tested under simulated controlled conditions.The lower bottom surface of the heat sink was heated at a constant heat flux condition based on dissipated power of 50 W and 70 W. The computations were carried out for different volume fractions of nanoparticles, namely 0.5% to 5%, and water as base fluid at a flow rate of 30 to 180 mL/min. The results showed a higher rate of heat rejection from the nanofluid cooled heat sink compared with water. The enhancement in performance was analyzed with the help of a temperature difference of nanofluid outlet temperature and water outlet temperature under similar operating conditions. The enhancement was ~2% for 0.5% volume fraction nanofluids and ~17% for a 5% volume fraction. View Full-Text
Keywords: heat sink; mini-channels; liquid cooling; nanofluid; cooling performance heat sink; mini-channels; liquid cooling; nanofluid; cooling performance
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MDPI and ACS Style

Jilte, R.; Ahmadi, M.H.; Kumar, R.; Kalamkar, V.; Mosavi, A. Cooling Performance of a Novel Circulatory Flow Concentric Multi-Channel Heat Sink with Nanofluids. Nanomaterials 2020, 10, 647.

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