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Experimental study of a new mixed mode solar greenhouse drying system with and without thermal energy storage for pepper

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  • Azaizia, Zaineb
  • Kooli, Sami
  • Hamdi, Ilhem
  • Elkhal, Wissem
  • Guizani, Amen Allah

Abstract

Thermal energy storage is a great interest for solar dryer as the availability of solar resource is intermittent. In this paper, we present an experimental work on a new mixed mode solar greenhouse drying system with and without thermal energy storage unit by Phase Change Materiel (PCM). In fact, The experiments were carried out simultaneously and the focus area is to investigate the effect of paraffin wax as a PCM on drying efficiency of red pepper. The drying system consists of two solar greenhouses, a storage unit and two identical solar air heaters. The experimental results show that air temperature inside solar greenhouse with PCM is higher than other driers by about 7,5 °C during all night period. The relative humidity in the drying chamber with PCM is lower by about 18,6% than the ambient relative humidity after sunset. The moisture content has an effective reduction of 95% in 30 h for dryer with PCM, whereas it took 55 h in dryer without PCM and 75 h in open sun. Ten thin-layer mathematical models were fitted to the drying data to select a suitable drying equation. The Midili et al. and the Two-term were found to be the best models respectively, in solar greenhouse with PCM, for both solar greenhouse without PCM and open sun dryer. The use of PCM in solar greenhouse dryer was found to be a promising alternative to enhance the drying process efficiency.

Suggested Citation

  • Azaizia, Zaineb & Kooli, Sami & Hamdi, Ilhem & Elkhal, Wissem & Guizani, Amen Allah, 2020. "Experimental study of a new mixed mode solar greenhouse drying system with and without thermal energy storage for pepper," Renewable Energy, Elsevier, vol. 145(C), pages 1972-1984.
    • Handle: RePEc:eee:renene:v:145:y:2020:i:c:p:1972-1984
    DOI: 10.1016/j.renene.2019.07.055
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    Citations

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    Cited by:

    1. Lakshmi, D.V.N. & Muthukumar, P. & Nayak, Prakash Kumar, 2021. "Experimental investigations on active solar dryers integrated with thermal storage for drying of black pepper," Renewable Energy, Elsevier, vol. 167(C), pages 728-739.
    2. Ayub, Iqra & Nasir, Muhammad Salman & Liu, Yang & Munir, Anjum & Yang, Fusheng & Zhang, Zaoxiao, 2020. "Performance improvement of solar bakery unit by integrating with metal hydride based solar thermal energy storage reactor," Renewable Energy, Elsevier, vol. 161(C), pages 1011-1024.
    3. Román-Roldán, N.I. & Ituna Yudonago, J.F. & López-Ortiz, A. & Rodríguez-Ramírez, J. & Sandoval-Torres, S., 2021. "A new air recirculation system for homogeneous solar drying: Computational fluid dynamics approach," Renewable Energy, Elsevier, vol. 179(C), pages 1727-1741.
    4. Shiva Gorjian & Behnam Hosseingholilou & Laxmikant D. Jathar & Haniyeh Samadi & Samiran Samanta & Atul A. Sagade & Karunesh Kant & Ravishankar Sathyamurthy, 2021. "Recent Advancements in Technical Design and Thermal Performance Enhancement of Solar Greenhouse Dryers," Sustainability, MDPI, vol. 13(13), pages 1-32, June.
    5. 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.
    6. Madhankumar, S. & Viswanathan, Karthickeyan & Wu, Wei, 2021. "Energy, exergy and environmental impact analysis on the novel indirect solar dryer with fins inserted phase change material," Renewable Energy, Elsevier, vol. 176(C), pages 280-294.
    7. Ouammi, Ahmed, 2021. "Model predictive control for optimal energy management of connected cluster of microgrids with net zero energy multi-greenhouses," Energy, Elsevier, vol. 234(C).
    8. Dake, Rock Aymar & N’Tsoukpoe, Kokouvi Edem & Kuznik, Frédéric & Lèye, Babacar & Ouédraogo, Igor W.K., 2021. "A review on the use of sorption materials in solar dryers," Renewable Energy, Elsevier, vol. 175(C), pages 965-979.
    9. Chen, C.Q. & Diao, Y.H. & Zhao, Y.H. & Wang, Z.Y. & Liang, L. & Wang, T.Y. & Zhu, T.T. & Ma, C., 2020. "Thermal performance of a closed collector–storage solar air heating system with latent thermal storage: An experimental study," Energy, Elsevier, vol. 202(C).
    10. Philip, Nadiya & Duraipandi, Sruthi & Sreekumar, A., 2022. "Techno-economic analysis of greenhouse solar dryer for drying agricultural produce," Renewable Energy, Elsevier, vol. 199(C), pages 613-627.

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