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Energetic, Exergetic, and Heat Transfer Assessment of PCM-Integrated Heat-Pipe-Based ETSC for Clear and Cloudy Weather Conditions

Author

Listed:
  • Sudhir Kumar Pathak

    (School of Energy Management, Shri Mata Vaishno Devi University, Katra 182320, India)

  • V. V. Tyagi

    (School of Energy Management, Shri Mata Vaishno Devi University, Katra 182320, India)

  • K. Chopra

    (School of Energy Management, Shri Mata Vaishno Devi University, Katra 182320, India
    School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra 182320, India)

  • A. K. Pandey

    (Research Centre for Nano-Materials and Energy Technology (RCNMET), School of Engineering and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, Petaling Jaya 47500, Malaysia
    Center for Transdisciplinary Research (CFTR), Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, India)

  • Ahmet Sari

    (Department of Metallurgical and Material Engineering, Karadeniz Technical University, Trabzon 61080, Turkey
    Interdisciplinary Research Center of Renewable Energy and Power Systems (IRC-REPS), King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia)

  • Ammar M. Abdulateef

    (Department of Air Conditioning and Refrigeration Techniques Engineering, Bilad Alrafidain University College, Baqubah 32001, Iraq)

Abstract

Solar energy’s most promising application is in water heating, followed by other solar thermal applications. In this investigation, a novel method of incorporating a phase-change material (PCM) between the annulus space of an evacuated tube and an aluminum finned heat pipe is employed. During day time, the PCM stores the excess amount of heat and releases it in order to heat the flowing water during high-demand/insufficient solar radiation. This study aims to evaluate the detailed heat transfer assessment and energetic and exergetic efficiencies of the developed PCM-integrated solar water heater in both clear and cloudy weather conditions at 20 LPH. The outcomes of the study found that the maximum useful amounts of energy collected daily for the clear and cloudy days were 10.65 MJ and 8.52 MJ, respectively, whereas temperatures of the stored water were found to be 45.2 °C and 41.4 °C on the next day at 6:00 a.m. for the corresponding days. The daily energetic and exergetic outputs of the designed system were 76.57% and 79.64%, and 2.37% and 1.38%, respectively, at fixed mass flow rate for the clear and cloudy day conditions. The overall heat transfer coefficients (U L ) for both days were 0.75 and 0.72 W/m 2 K, respectively. The findings show that the proposed system overcomes the issue of overheated heat pipes and can provide hot water even in cloudy/low-sunshine conditions.

Suggested Citation

  • Sudhir Kumar Pathak & V. V. Tyagi & K. Chopra & A. K. Pandey & Ahmet Sari & Ammar M. Abdulateef, 2023. "Energetic, Exergetic, and Heat Transfer Assessment of PCM-Integrated Heat-Pipe-Based ETSC for Clear and Cloudy Weather Conditions," Sustainability, MDPI, vol. 15(12), pages 1-18, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9780-:d:1174508
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    References listed on IDEAS

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    1. Wu, Wei & Wang, Xiaoyu & Xia, Man & Dou, Yiping & Yin, Zhengyu & Wang, Jun & Lu, Ping, 2020. "A novel composite PCM for seasonal thermal energy storage of solar water heating system," Renewable Energy, Elsevier, vol. 161(C), pages 457-469.
    2. Essa, Mohamed A. & Rofaiel, Ibrahim Y. & Ahmed, Mohamed A., 2020. "Experimental and Theoretical Analysis for the Performance of Evacuated Tube Collector Integrated with Helical Finned Heat Pipes using PCM Energy Storage," Energy, Elsevier, vol. 206(C).
    3. Alshukri, Mohammed J. & Eidan, Adel A. & Najim, Saleh Ismail, 2021. "Thermal performance of heat pipe evacuated tube solar collector integrated with different types of phase change materials at various location," Renewable Energy, Elsevier, vol. 171(C), pages 635-646.
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