Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Heat Transfer Research
IF: 1.199 5-Year IF: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Print: 1064-2285
ISSN Online: 2162-6561

Volumes:
Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2012004421
pages 709-720

EXPERIMENTAL INVESTIGATION OF HEAT TRANSFER IN A NOVEL HEAT SINK BY MEANS OF ALUMINA NANOFLUIDS

Hootan Zirakzadeh
Department of Mechanical Engineering, University of Tehran, Tehran, Iran
Alireza Mashayekh
Department of Mechanical Engineering, University of Tehran, Tehran, Iran
Hossein Noori Bidgoli
Department of Mechanical Engineering, Islamic Azad University of Kashan, Kashan, Iran
Mehdi Ashjaee
Department of Mechanical Engineering, University of Tehran, Tehran, Iran

ABSTRACT

In this paper, heat transfer characteristics of a miniature heat sink cooled by Al2O3−water nanofluids were investigated experimentally. Based on plate fin heat sinks, a new type of plate pin-finnned heat sink is developed which is composed of a plate fin heat sink and columnar pins between the plate fins. The heat sink was fabricated from aluminum and insulated by plexiglass cover plates and consisted of five pin-finned rectangular channels with a length of 42 mm. The volume fraction of the Al2O3−water nanofluid particles was in the range from 0.5 to 2%. Mixtures were prepared without a dispersion agent. Tests were performed while supplying a 180 W/cm2 heat flux to the bottom of heat sink. Experimental results showed that dispersion of Al2O3 nanoparticles in water increased significantly the overall heat transfer coefficient, while the thermal resistance of heat sink decreased. Also, the plate pin-finned heat sink showed an increase in the heat transfer coefficient up to 20% in comparison with the conventional plate fin heat sink.


Articles with similar content:

FREE CONVECTION HEAT TRANSFER IN HORIZONTAL AND VERTICAL RECTANGULAR CAVITIES FILLED WITH NANOFLUIDS
International Heat Transfer Conference 13, Vol.0, 2006, issue
Christopher Yap, Arun S. Mujumdar, X. Q. Wang
HEAT TRANSFER ENHANCEMENT IN A CIRCULAR FINNED TWOPHASE CLOSED THERMOSYPHON (TPCT) USING ETHYLENE GLYCOL AND NANO PARTICLE MIXTURE
First Thermal and Fluids Engineering Summer Conference, Vol.8, 2015, issue
N. Karunakaran, Alagappan Narayanan
ENHANCED HEAT TRANSFER FROM HOT SURFACE BY NANOFLUID BASED ULTRAFAST COOLING: AN EXPERIMENTAL INVESTIGATION
Journal of Enhanced Heat Transfer, Vol.26, 2019, issue 4
Santosh Kumar Nayak, Purna Chandra Mishra
Entropy Generation Analysis of a Microchannel Heat Sink with Al2O3 and CNT Nanofluid
Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019), Vol.0, 2019, issue
Ranjit S. Patil, Abhilash K. Tilak
Convective Heat Transfer in a Wavy Channel Utilizing Nanofluids
Journal of Enhanced Heat Transfer, Vol.14, 2007, issue 4
Javad Rostami