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Thermal and CFD Analyses of Sustainable Heat Storage-Based Passive Greenhouse Dryer Operating in No-Load Condition

Author

Listed:
  • Asim Ahmad

    (Faculty of Engineering and Applied Sciences, Usha Martin University, Ranchi 835103, India)

  • Om Prakash

    (Department of Mechanical Engineering, Birla Institute of Technology, Ranchi 835215, India)

  • Shailesh Kumar Sarangi

    (Department of Mechanical Engineering, Srinath University, Jamshedpur 831013, India)

  • Prashant Singh Chauhan

    (Department of Mechanical Engineering, Gaya College of Engineering, Gaya 823003, India)

  • Rajeshwari Chatterjee

    (Department of Chemical Engineering, Birla Institute of Technology, Ranchi 835215, India)

  • Shubham Sharma

    (Mechanical Engineering Department, University Centre for Research and Development, Chandigarh University, Mohali 140413, India
    School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Raman Kumar

    (Department of Mechanical and Production Engineering, Guru Nanak Dev Engineering College, Ludhiana 141006, India)

  • Sayed M. Tag

    (Faculty of Engineering, Future University in Egypt, New Cairo 11835, Egypt)

  • Abhinav Kumar

    (Department of Nuclear and Renewable Energy, Ural Federal University Named after the First President of Russia, Boris Yeltsin, 19 Mira Street, 620002 Ekaterinburg, Russia)

  • Bashir Salah

    (Industrial Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia)

  • Syed Sajid Ullah

    (Department of Information and Communication Technology, University of Agder (UiA), N-4898 Grimstad, Norway)

Abstract

This article presents a comprehensive study on thermal and computational fluid dynamics (CFD) analysis of an innovative greenhouse dryer designed for passive operation under a no-load condition. The dryer incorporates hybrid thermal storage at the floor and a reflective mirror with thermocoal as the north wall, transforming a classical even-span greenhouse dryer into an efficient and effective system. The experimentation was conducted under clear sky conditions, with variations in global solar radiation (GSR) ranging from 166.6 to 1209 W/m 2 , resulting in an average value of 875.9 W/m 2 . The variations in GSR influenced other ambient parameters, including ambient temperature (28.7 °C to 35.6 °C), ambient relative humidity (33.2% to 45.7%), and ambient wind speed (0.1 to 1.02 m/s). Indoor parameters of the proposed dryer, such as inside temperature (31 °C to 47.35 °C), inside relative humidity (31.1% to 39.1%), ground temperature (44.2 °C to 70.6 °C), and outlet temperature (29 °C to 45.35 °C), were measured hourly. The average values of these parameters were 41.25 °C, 35.31%, 61.65 °C, and 39.25 °C, respectively. Quantitative parameters, including heat loss, overall heat transfer coefficient, coefficient of diffusion, and instantaneous efficiency, were calculated to evaluate the dryer’s performance. The proposed dryer exhibited an improved range of overall heat transfer coefficients (3.87 to 5.03 W/m 2 K) compared to the modified greenhouse dryer under passive mode and the conventional greenhouse under passive mode. CFD analysis provided temperature distribution plots showing a progressively increasing range of temperatures near the trays, ranging from 310 K to 335 K, suitable for natural convection drying. The findings highlight the superior performance of the innovative dryer compared to contemporary systems. This research contributes to the advancement of drying technology and holds potential for applications in the agriculture and food processing industries.

Suggested Citation

  • Asim Ahmad & Om Prakash & Shailesh Kumar Sarangi & Prashant Singh Chauhan & Rajeshwari Chatterjee & Shubham Sharma & Raman Kumar & Sayed M. Tag & Abhinav Kumar & Bashir Salah & Syed Sajid Ullah, 2023. "Thermal and CFD Analyses of Sustainable Heat Storage-Based Passive Greenhouse Dryer Operating in No-Load Condition," Sustainability, MDPI, vol. 15(15), pages 1-21, August.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:15:p:12067-:d:1211987
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    References listed on IDEAS

    as
    1. Chauhan, Prashant Singh & Kumar, Anil & Nuntadusit, Chayut, 2018. "Heat transfer analysis of PV integrated modified greenhouse dryer," Renewable Energy, Elsevier, vol. 121(C), pages 53-65.
    2. Chauhan, Prashant Singh & Kumar, Anil & Gupta, Bhupendra, 2017. "A review on thermal models for greenhouse dryers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 75(C), pages 548-558.
    3. S. Ayyappan & K. Mayilsamy, 2012. "Solar tunnel drier with thermal storage for drying of copra," International Journal of Energy Technology and Policy, Inderscience Enterprises Ltd, vol. 8(1), pages 3-13.
    4. Walid Rouissi & Nabiha Naili & Mohamed Jarray & Majdi Hazami, 2021. "CFD Numerical Investigation of a New Solar Flat Air-Collector Having Different Obstacles with Various Configurations and Arrangements," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-17, September.
    5. Prakash, Om & Kumar, Anil, 2014. "Solar greenhouse drying: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 29(C), pages 905-910.
    6. Asim Ahmad & Om Prakash & Anil Kumar & Rajeshwari Chatterjee & Shubham Sharma & Vineet Kumar & Kushagra Kulshreshtha & Changhe Li & Elsayed Mohamed Tag Eldin, 2022. "A Comprehensive State-of-the-Art Review on the Recent Developments in Greenhouse Drying," Energies, MDPI, vol. 15(24), pages 1-42, December.
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