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Heat Pipe Science and Technology, An International Journal

ISSN Print: 2151-7975
ISSN Online: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

Heat Pipe Science and Technology, An International Journal

DOI: 10.1615/HeatPipeScieTech.2013009720
pages 157-168

EXPERIMENTAL INVESTIGATION ON THERMAL CHARACTERISTICS OF A TWO-PHASED CLOSED THERMOSYPHON USING ORGANIC NANOFLUIDS

S. Reza Mousavi
Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 91775-1111, I.R. Iran
Seyed Mostafa Nowee
Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 91775-1111, I.R. Iran
Farzaneh Hariri Diba
Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 91775-1111, I.R. Iran
Ali Golmohammadi
Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box 91775-1111, I.R. Iran
Seyyed Hosein Noie
Heat Pipe and Nanofluid Research Center, Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

ABSTRACT

Today, combining heat pipe and nanoparticle technologies is reported to enhance the efficiency of heat transfer devices. Suspensions of nanoparticles and fluids, called nanofluids, have a great impact in heat transfer enhancement. This paper presents an experimental investigation regarding the effects of organic nanofluids on the efficiency of a two-phase closed thermosyphon. The experimental results showed that, for different input powers, in some cases (ethanol/CuO) the efficiency of the thermosyphon improved compared to the case of using pure base fluid. For instance, acetone/Fe2O3 and ethanol/CuO nanofluids with 0.5-2% weight fraction of nanoparticles as the working fluids present better thermal performance over a wide range of input power. However, the improvements were small and for ethanol/Fe2O3, nanoparticles had the reverse effect. The maximum improvement in efficiency was about 13% in some input powers. In addition, temperature distributions on the thermosyphon confirmed these results too.