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Performance improvement of solar bakery unit by integrating with metal hydride based solar thermal energy storage reactor

Author

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  • Ayub, Iqra
  • Nasir, Muhammad Salman
  • Liu, Yang
  • Munir, Anjum
  • Yang, Fusheng
  • Zhang, Zaoxiao

Abstract

Storage of solar thermal energy is an effective way to overcome the issue of incompatibility between the solar system and its users. This paper proposed a novel perception by integrating a metal hydride based thermochemical energy storage (MH-TES) system with a solar bakery unit (SBU). A numerical simulation was performed by using COMSOL MULTIPHYSIS 5.3a to assess the dynamic behavior of the reactor. The results showed that the high-temperature metal hydride (HTMH) reactor during the discharging process has a high improvement potential rate (0.195 kW), a high exergetic factor (59.97%) and low exergy efficiency (30.25%) as compared to HTMH reactor during the heat charging process. The overall exergy efficiency of the HTMH reactor was estimated as 34.03%. The maximum value of energy output (Qout), exergy output (Exout), gravimetric exergy output rate (GEOR) and gravimetric efficient heat output rate (GEHOR) during discharging period was calculated as 1560 W, 174 W, 7.4 W/kg and 66 W/kg, respectively. The energy efficiency of SBU is improved from 6% to 42.89% by integrating with the MH-TES system. This paper presents a comprehensive approach for thermal analysis of HTMH for the solar bakery system, which contributes to system optimization for efficient solar energy storage.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:161:y:2020:i:c:p:1011-1024
    DOI: 10.1016/j.renene.2020.07.133
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    2. Liu, Yang & Wang, Hongxia & Ayub, Iqra & Yang, Fusheng & Wu, Zhen & Zhang, Zaoxiao, 2021. "A variable cross-section annular fins type metal hydride reactor for improving the phenomenon of inhomogeneous reaction in the thermal energy storage processes," Applied Energy, Elsevier, vol. 295(C).
    3. Ruan, Zhaohui & Sun, Weiwei & Yuan, Yuan & Tan, Heping, 2023. "Accurately forecasting solar radiation distribution at both spatial and temporal dimensions simultaneously with fully-convolutional deep neural network model," Renewable and Sustainable Energy Reviews, Elsevier, vol. 184(C).
    4. Marco Briceño-León & Dennys Pazmiño-Quishpe & Jean-Michel Clairand & Guillermo Escrivá-Escrivá, 2021. "Energy Efficiency Measures in Bakeries toward Competitiveness and Sustainability—Case Studies in Quito, Ecuador," Sustainability, MDPI, vol. 13(9), pages 1-20, May.
    5. Zhu, Chen & Mou, Xiaofeng & Bao, Zewei, 2024. "Optimization of tree-shaped fin structures towards enhanced discharging performance of metal hydride reactor for thermochemical heat storage based on entransy theory," Renewable Energy, Elsevier, vol. 220(C).
    6. Martin Beer & Radim Rybár & Jana Rybárová & Andrea Seňová & Vojtech Ferencz, 2021. "Numerical Analysis of Concentrated Solar Heaters for Segmented Heat Accumulators," Energies, MDPI, vol. 14(14), pages 1-20, July.
    7. Sreeraj, R. & Aadhithiyan, A.K. & Anbarasu, S., 2022. "Comparison, advancement, and performance evaluation of heat exchanger assembly in solid-state hydrogen storage device," Renewable Energy, Elsevier, vol. 198(C), pages 667-678.

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