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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2016011738
pages 787-797

KINETICS OF FENUGREEK DRYING IN AN INDIRECT SOLAR DRYER

vipin shrivastava
Lakshmi Narain College of Technology, RGPV
Anil Kumar
Energy Technology Research Center, Department of Mechanical Engineering, Faculty of Engineering, Prince of Songkla University Hat Yai, Songkhla, 90110, Thailand
Prashant Baredar
Department of Energy, Maulana Azad National Institute of Technology (MANIT), Bhopal, 462003, India

RÉSUMÉ

In this paper, kinetics of fenugreek drying on different trays of an indirect solar dryer was examined so as to increase its shelf life. For this purpose, a thin layer of 2 kg of fenugreek was placed on three different trays of dimensions 0.7 m × 0.7 m, to be further dried until there is no variation in its mass. The drying rate is fitted in different models available in the literature and the best model is obtained by comparing the values of the diffusion coefficient, root means square error, and the sum of square due to error. The diffusion coefficient of fenugreek on different trays was also investigated and found in the range of 2.422 × 10-8 m2/s to 3.872 × 10-8 m2/s. An average efficiency of the dryer in peak hours on the first and second days of drying was 38.63% and 7.56%, respectively.