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<p>Tapioca is a starch extracted from the cassava plant and are used to make chips/papad for preparation of food items. Locally, tapioca chips are typically dried by unmanaged open air drying on the ground, which is time-consuming, ineffective, and may result in product degradation during rain. In order to solve the aforementioned issue and effectively dry tapioca chips, an appropriate drier that uses renewable solar energy was created. The dryer was created using a prototype that could dry one kilogramme of tapioca chips or papad to accommodate the small-scale companies that are the norm in the area produce up to 100&#xa0;kg of tapioca chips or papad per day, typically serving local markets. In this design, a sensible heat storage medium was merged with an indirect forced convection solar dryer. The effectiveness of the system for drying tapioca chips/pappad was examined, as well as the impact of thermal storage and air mass flow rate. The trials were conducted with daily global solar radiation impacting on an inclined surface of 686.69&#xa0;W m<sup>–2</sup>, with average ambient atmospheric conditions of 32.03&#xa0;°C and 49.5% relative humidity. When compared to open atmospheric drying, it has been found that product drying in a dryer provided greater quality and was more consistent.</p>

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Design and experimental analysis on solar dryer for drying tapioca chips/pappad

  • 期刊论文

  • 发表日期：

    2025年2月26日

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  • Vairavel Madeshwaren,
  • Mariyappan Selvaraj

摘要

Tapioca is a starch extracted from the cassava plant and are used to make chips/papad for preparation of food items. Locally, tapioca chips are typically dried by unmanaged open air drying on the ground, which is time-consuming, ineffective, and may result in product degradation during rain. In order to solve the aforementioned issue and effectively dry tapioca chips, an appropriate drier that uses renewable solar energy was created. The dryer was created using a prototype that could dry one kilogramme of tapioca chips or papad to accommodate the small-scale companies that are the norm in the area produce up to 100 kg of tapioca chips or papad per day, typically serving local markets. In this design, a sensible heat storage medium was merged with an indirect forced convection solar dryer. The effectiveness of the system for drying tapioca chips/pappad was examined, as well as the impact of thermal storage and air mass flow rate. The trials were conducted with daily global solar radiation impacting on an inclined surface of 686.69 W m–2, with average ambient atmospheric conditions of 32.03 °C and 49.5% relative humidity. When compared to open atmospheric drying, it has been found that product drying in a dryer provided greater quality and was more consistent.