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Comparative study on heat transfer characteristics of nanofluidic thermosyphon and grooved heat pipe

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Abstract

The present study used TiO2-nanofluid with different volume ratios as the working fluids of a therrmosyphon and grooved heat pipe and investigated various parameters such as volume concentration of nanoparticles, orientation, heat flux, and cooling media. Further, the present study used nanofluids and dispersed TiO2-nanoparticles into pure water with each cross-blended concentration of 0.05%, 0.1%, 0.5%, and 1%. The authors observed the best heat transfer performance in the 0.05% concentration with thermosyphon. The present study presents the enhancement of heat transfer performance with TiO2-nanofluids, and fabricated a heat pipe from a straight stainless steel tube with an outer diameter and length of 10 and 500 mm, respectively. At the optimum condition for the pure refrigerant, the thermosyphon with 0.05% TiO2-nanoparticle concentration gave 1.40 times higher efficiency than that of pure water.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Myeongji University, san 38-2 Namdong, Cheoin-gu, Yongin, Gyeonggido, 449-728, Korea

    Dong-Ryun Shin

  2. School of Mechanical Engineering, Chungbuk National University, Cheongju, Chungbuk, 151-742, Korea

    Seok-Ho Rhi, Taek-Kyu Lim & Ju-Chan Jang

Authors
  1. Dong-Ryun Shin
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  2. Seok-Ho Rhi
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  3. Taek-Kyu Lim
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  4. Ju-Chan Jang
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Corresponding author

Correspondence to Seok-Ho Rhi.

Additional information

This paper was recommended for publication in revised form by Associate Editor

Dong-Ryun Shin is a chairman in the institute of Korea Filter Co., He received a Ph.D degree from the Myeongji University, Korea. His research interests include heat pipes, heat exchangers and, thermal design, automotive engineering.

Seok-Ho Rhi is an Associate Professor in Chungbuk National University, He received a Ph.D degree from the University of Ottawa, Canada. His interests include heat pipes, heat exchangers and, thermoelectric modules.

Taek-Kyu Lim is a graduate student in the School of Mechanical Engineering, Chungbuk National University. He is working on heat pipe systems, CFD and heat exchangers.

Ju-Chan Jang is a graduate student in the School of Mechanical Engineering, Chungbuk National University. He is working on heat pipe systems, and electric vehicle battery cooling system.

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Shin, DR., Rhi, SH., Lim, TK. et al. Comparative study on heat transfer characteristics of nanofluidic thermosyphon and grooved heat pipe. J Mech Sci Technol 25, 1391–1398 (2011). https://doi.org/10.1007/s12206-011-0409-9

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  • DOI: https://doi.org/10.1007/s12206-011-0409-9

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