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Affordable solar-assisted biogas digesters for cold climates: Experiment, model, verification and analysis

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  • Weatherford, Vergil C.
  • (John) Zhai, Zhiqiang

Abstract

Energy sources are scarce in the chilly, high mountains of the developing world. Solar-assisted biogas digesters have recently been adapted to this climate providing an alternative cooking fuel for some rural families, but little is known about the thermal performance of these digesters. Internal slurry temperature is one of the important design factors in bio-digesters. This study conducted a series of field experiments on an experimental bio-digester in Cusco, Peru to investigate the thermal performance of these affordable bio-digesters. The study further improved and validated a one-dimensional thermal computer simulation model using the experimental results. A set of design recommendations for small-scale, cold-climate digesters is presented based on parametric analysis of the validated model for several key design parameters.

Suggested Citation

  • Weatherford, Vergil C. & (John) Zhai, Zhiqiang, 2015. "Affordable solar-assisted biogas digesters for cold climates: Experiment, model, verification and analysis," Applied Energy, Elsevier, vol. 146(C), pages 209-216.
    • Handle: RePEc:eee:appene:v:146:y:2015:i:c:p:209-216
    DOI: 10.1016/j.apenergy.2015.01.111
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    References listed on IDEAS

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    1. Torres, J.L. & De Blas, M. & García, A. & de Francisco, A., 2010. "Comparative study of various models in estimating hourly diffuse solar irradiance," Renewable Energy, Elsevier, vol. 35(6), pages 1325-1332.
    2. Ridley, Barbara & Boland, John & Lauret, Philippe, 2010. "Modelling of diffuse solar fraction with multiple predictors," Renewable Energy, Elsevier, vol. 35(2), pages 478-483.
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    Cited by:

    1. Hua, Zhihao & Li, Jiayong & Zhou, Bin & Or, Siu Wing & Chan, Ka Wing & Meng, Yunfan, 2022. "Game-theoretic multi-energy trading framework for strategic biogas-solar renewable energy provider with heterogeneous consumers," Energy, Elsevier, vol. 260(C).
    2. Mahmudul, H.M. & Rasul, M.G. & Akbar, D. & Narayanan, R. & Mofijur, M., 2022. "Food waste as a source of sustainable energy: Technical, economical, environmental and regulatory feasibility analysis," Renewable and Sustainable Energy Reviews, Elsevier, vol. 166(C).
    3. Zhang, Kuan & Zhou, Bin & Li, Canbing & Voropai, Nikolai & Li, Jiayong & Huang, Wentao & Wang, Tao, 2021. "Dynamic modeling and coordinated multi-energy management for a sustainable biogas-dominated energy hub," Energy, Elsevier, vol. 220(C).
    4. Mussard, Maxime, 2017. "Solar energy under cold climatic conditions: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 74(C), pages 733-745.

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