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MATHEMATICAL MODELING OF APPLE DRYING KINETICS IN INDIRECT SOLAR DRYING PLANTS WITH OPTIMIZED AIR HEATER

Field of Science:Energy (miscellaneous)Renewable Energy, Sustainability and the Environment
National field of science (HAC):02.00.08 — Chemistry and technology of oil and gas04.00.12 — Construction and operation of oil and gas pipelines, bases and storage facilities04.00.13 — Development and operation of oil and gas fields05.05.04 — Industrial heat power engineering05.05.01 — Power systems and complexes05.05.02 — Electrical engineering. Electric power stations and systems. Electrotechnical complexes and devices05.05.03 — Lighting engineering. Special lighting technologies05.05.09 — Nuclear power installations and technologies05.05.10 — Nuclear reactor engineering, machines, units and materials technology of the nuclear industry05.05.05 — Theoretical foundations of thermal engineering05.05.06 — Power installations based on renewable energy sources05.05.07 — Electrical technologies and electrical equipment in agriculture
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Abstract. Introduction. The work examines the modeling of sun drying of apples in an indirect drying unit. The influence of solar radiation and heated air temperature on the kinetics of moisture removal was investigated. Experimental data were compared with thin-layer drying models. It has been shown that the use of an effective air heater reduces drying time, ensuring the preservation of apple quality and reducing energy consumption. Methods and materials. The study was carried out using an experimental indirect solar drying system operating under natural air convection. Apple slices of the “Simirenko” variety, cut into uniform pieces, were used as the drying material. The temperature of the heated air and the relative moisture content of the product were measured under different levels of solar radiation. Thin-layer mathematical modeling methods were applied to analyze the drying process. Results. Experimental results demonstrated that an increase in solar radiation intensity leads to a higher heated air temperature and an acceleration of the drying process. At a solar radiation level of 933 W/m², the drying duration of apples was reduced to less than five days. The obtained drying kinetics curves show good agreement with the mathematical modeling results, confirming the adequacy of the selected models. Conclusion. The conducted research confirms the high energy efficiency of the indirect solar drying system with an optimized air heater. Mathematical modeling proves to be an effective tool for predicting drying kinetics and optimizing the operating regimes of the solar dryer

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Science ID: MSD-0726-0282

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# моделирование# сушка# влажность# радиация# шкаф# яблоки# солнечная# математическое# непрямой# солнечный# сушильный# воздухонагреватель# относительная

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https://eroi.uz/11.32/A026-466098

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