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Open AccessArticle

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

Department of Mechanical Engineering; Lovely Professional University, Phagwara, Punjab-14411, India
Faculty of Mechanical Engineering, Shahrood University of Technology, POB- Shahrood 3619995161, Iran
Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur 440010, India
Kalman Kando Faculty of Electrical Engineering, Obuda University, 1034 Budapest, Hungary
Institute of Structural Mechanics (ISM), Bauhaus-Universität Weimar, 99423 Weimar, Germany
Thuringian Institute of Sustainability and Climate Protection, 07743 Jena, Germany
Faculty of Civil Engineering, Technische Universität Dresden, 01069 Dresden, Germany
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(4), 647;
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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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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