Thermodynamic Evaluation of the Forced Convective Hybrid-Solar Dryer during Drying Process of Rosemary (Rosmarinus officinalis L.) Leaves

نویسندگان

چکیده

This study aimed to examine the energy and exergy indices of rosemary drying process in a hybrid-solar dryer (HSD) effects air-drying parameters on these thermodynamic indices. Drying experiments were carried out at four levels air temperature (40, 50, 60, 70 ?C) three velocity (1, 1.5, 2 m/s). Energy calculated by application first second laws thermodynamics. Based principal laws, efficiency, losses, exergetic improvement potential rate, evaluated. The results showed that utilization ratio (EUR) ranged from 0.246 0.502, (EU) 0.017 0.060 (kJ/s). Exergy loss efficiency varied 0.009 0.028 (kJ/s) 35.08% 78.5%, respectively, increased with velocity. It was found rate affected because overall heat transfer coefficient different under conditions. By comparison, increasing velocity, increased. Because most is used evaporate moisture, this behavior may be explained improved utilization. chamber sustainability index 0.0129 0.0293. provides insights into optimization operations operational solar hybrid dryers reduce losses consumption.

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ژورنال

عنوان ژورنال: Energies

سال: 2021

ISSN: ['1996-1073']

DOI: https://doi.org/10.3390/en14185835