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Performance enhancement by integrating concentrated inclined solar still for jaggery production

Author

Listed:
  • Venkata Sai, P.
  • Reddy, K.S.

Abstract

While unrefined sugar/jaggery consumption has various health benefits, unsustainable and inefficient production processes can negatively impact the environment and health. This study proposes a novel, sustainable approach to jaggery production using solar energy. The primary concentration is done in a VARS system, followed by the secondary concentration in a solar still field at low temperatures to maintain jaggery quality. The study presents experimental observations from the developed inclined solar still with external reflectors to preheat and concentrate the juice. In the absence of sun, the solar still field functions as an evaporation-condensation unit under auxiliary heating. By connecting several solar stills in series, the energy requirements from the PTC field can be reduced. The system is capable of producing a by product of distilled water, amounting to 169.78 kg/day, under varying solar radiation in April at Chennai, India. The overall energy efficiency of the system is 48.31 % under solar load, and 63.05 % under auxiliary heating. The system also leads to enhancement in CO2 mitigations, amounting to around 3134.7 tons of CO2 from dry bagasse combustion. Due to the added revenue from distilled water production, the system's payback period is reduced to as low as 4.89 years, depending on product selling price.

Suggested Citation

  • Venkata Sai, P. & Reddy, K.S., 2024. "Performance enhancement by integrating concentrated inclined solar still for jaggery production," Energy, Elsevier, vol. 307(C).
    • Handle: RePEc:eee:energy:v:307:y:2024:i:c:s0360544224024666
    DOI: 10.1016/j.energy.2024.132692
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    References listed on IDEAS

    as
    1. Sardeshpande, Vishal R. & Shendage, D.J. & Pillai, Indu R., 2010. "Thermal performance evaluation of a four pan jaggery processing furnace for improvement in energy utilization," Energy, Elsevier, vol. 35(12), pages 4740-4747.
    2. S P Raj & M Srinivas & B Sravya & T S O'Donovan & K S Reddy, 2021. "Design of tunnel drier for the non-centrifugal sugar industry [Upgradation of jaggery production and preservation technologies]," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 16(2), pages 407-416.
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