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Internal Flow in an Enhanced Tube Having Square-cut Twisted Tape Insert

Author

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  • Agung Tri Wijayanta

    (Department of Mechanical Engineering, Graduate School of Engineering, Universitas Sebelas Maret, Kampus UNS Kentingan, Jl. Ir. Sutami 36A Kentingan, Surakarta 57126, Indonesia
    Research Group of Sustainable Thermofluids, Faculty of Engineering, Universitas Sebelas Maret, Kampus UNS Kentingan, Jl. Ir. Sutami 36A Kentingan, Surakarta 57126, Indonesia)

  • Pranowo

    (Research Group of Sustainable Thermofluids, Faculty of Engineering, Universitas Sebelas Maret, Kampus UNS Kentingan, Jl. Ir. Sutami 36A Kentingan, Surakarta 57126, Indonesia
    Department of Informatics, Universitas Atma Jaya Yogyakarta, Jl. Babarsari 44 Yogyakarta 55281, Indonesia)

  • Mirmanto

    (Department of Mechanical Engineering, Mataram University, Jl. Majapahit 62, Mataram 83125, Indonesia)

  • Budi Kristiawan

    (Department of Mechanical Engineering, Graduate School of Engineering, Universitas Sebelas Maret, Kampus UNS Kentingan, Jl. Ir. Sutami 36A Kentingan, Surakarta 57126, Indonesia
    Research Group of Sustainable Thermofluids, Faculty of Engineering, Universitas Sebelas Maret, Kampus UNS Kentingan, Jl. Ir. Sutami 36A Kentingan, Surakarta 57126, Indonesia)

  • Muhammad Aziz

    (Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan)

Abstract

In this study, a numerical simulation has been conducted in order to evaluate the thermal hydraulic performance of a turbulent single-phase flow inside an enhanced tube equipped with a square-cut twisted tape (STT) insert. The classical twisted tape (CTT) insert was also investigated for comparison. The k-ε renormalized group turbulence model has been utilized as the turbulent model. Various twist ratios ( y / W ) of 2.7, 4.5, and 6.5 were investigated for the Reynolds number range of 8000–18,000, with water as the working fluid. The numerical results indicated that, in comparison with the plain tube (PT), the tube equipped with the STT with the twist ratios of 2.7, 4.5, and 6.5 led to an increase in the values of the Nusselt number and friction factor in the inner tube by 45.4–80.7% and 2.0–3.3 times, respectively; in addition, the highest thermal performance of 1.23 has been obtained. The results further indicated that the tube equipped with the CTT of the same twist ratios improved the Nusselt number and friction factor in the inner tube by 40.3–74.4% and 1.7–3.0 times, respectively, in comparison with the PT; further, the maximum thermal performance of 1.18 was achieved.

Suggested Citation

  • Agung Tri Wijayanta & Pranowo & Mirmanto & Budi Kristiawan & Muhammad Aziz, 2019. "Internal Flow in an Enhanced Tube Having Square-cut Twisted Tape Insert," Energies, MDPI, vol. 12(2), pages 1-12, January.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:2:p:306-:d:199124
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    References listed on IDEAS

    as
    1. Budi Kristiawan & Budi Santoso & Agung Tri Wijayanta & Muhammad Aziz & Takahiko Miyazaki, 2018. "Heat Transfer Enhancement of TiO 2 /Water Nanofluid at Laminar and Turbulent Flows: A Numerical Approach for Evaluating the Effect of Nanoparticle Loadings," Energies, MDPI, vol. 11(6), pages 1-15, June.
    2. Evangelos Bellos & Christos Tzivanidis, 2018. "Enhancing the Performance of Evacuated and Non-Evacuated Parabolic Trough Collectors Using Twisted Tape Inserts, Perforated Plate Inserts and Internally Finned Absorber," Energies, MDPI, vol. 11(5), pages 1-28, May.
    3. Agung Tri Wijayanta & Muhammad Aziz & Keishi Kariya & Akio Miyara, 2018. "Numerical Study of Heat Transfer Enhancement of Internal Flow Using Double-Sided Delta-Winglet Tape Insert," Energies, MDPI, vol. 11(11), pages 1-15, November.
    4. Jaisankar, S. & Radhakrishnan, T.K. & Sheeba, K.N., 2009. "Studies on heat transfer and friction factor characteristics of thermosyphon solar water heating system with helical twisted tapes," Energy, Elsevier, vol. 34(9), pages 1054-1064.
    5. Yuan Xue & Zhihua Ge & Xiaoze Du & Lijun Yang, 2018. "On the Heat Transfer Enhancement of Plate Fin Heat Exchanger," Energies, MDPI, vol. 11(6), pages 1-18, May.
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    Cited by:

    1. Piotr Bogusław Jasiński, 2021. "Numerical Study of Heat Transfer Intensification in a Circular Tube Using a Thin, Radiation-Absorbing Insert. Part 1: Thermo-Hydraulic Characteristics," Energies, MDPI, vol. 14(15), pages 1-18, July.
    2. Gan Liu & Chen Yang & Junhui Zhang & Huaizhi Zong & Bing Xu & Jin-yuan Qian, 2020. "Internal Flow Analysis of a Heat Transfer Enhanced Tube with a Segmented Twisted Tape Insert," Energies, MDPI, vol. 13(1), pages 1-16, January.
    3. Pasu Poonpakdee & Boonsong Samutpraphut & Chinaruk Thianpong & Suriya Chokphoemphun & Smith Eiamsa-ard & Naoki Maruyama & Masafumi Hirota, 2022. "Heat Transfer Intensification in a Heat Exchanger by Means of Twisted Tapes in Rib and Sawtooth Forms," Energies, MDPI, vol. 15(23), pages 1-17, November.
    4. Piotr Bogusław Jasiński, 2021. "Numerical Study of Heat Transfer Intensification in a Circular Tube Using a Thin, Radiation-Absorbing Insert. Part 2: Thermal Performance," Energies, MDPI, vol. 14(15), pages 1-18, July.
    5. Budi Kristiawan & Agung Tri Wijayanta & Koji Enoki & Takahiko Miyazaki & Muhammad Aziz, 2019. "Heat Transfer Enhancement of TiO 2 /Water Nanofluids Flowing Inside a Square Minichannel with a Microfin Structure: A Numerical Investigation," Energies, MDPI, vol. 12(16), pages 1-21, August.
    6. Piotr Bogusław Jasiński & Michał Jan Kowalczyk & Artur Romaniak & Bartosz Warwas & Damian Obidowski & Artur Gutkowski, 2021. "Investigation of Thermal-Flow Characteristics of Pipes with Helical Micro-Fins of Variable Height," Energies, MDPI, vol. 14(8), pages 1-18, April.

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