Startseite Mathematical Modeling of Thin-Layer Solar Drying for Yarrow, Coriander and Hollyhock
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Mathematical Modeling of Thin-Layer Solar Drying for Yarrow, Coriander and Hollyhock

  • Yasaman Amanlou , Teymour Tavakoli Hashjin EMAIL logo , Barat Ghobadian und Gholamhassan Najafi
Veröffentlicht/Copyright: 21. August 2015
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Abstract

The objective of this study is to investigate the drying kinetics of Yarrow, Coriander and Hollyhock flowers. These three medicinal products were dried using a solar hybrid photovoltaic-thermal dryer. The drying process was examined at the air temperatures of 40°C, 50°C and 60°C and air velocities of 0.5, 1 and 1.5 m/s. The experimental drying data were fitted to different theoretical models to predict the drying kinetics. Nonlinear regression analysis was performed to relate the parameters of the model with the drying conditions. The performance of these models was evaluated by comparing the correlation coefficient (R2), root mean square error (RMSE) and the chi-square (χ2) between the observed and the predicted moisture ratios. Among all the models, the exponential two-term was found to have the best fit in this study. Also the influence of plant type, air temperature and velocity was investigated.


Correction Note

Correction added after online publication September 1, 2015: The first name of Gholamhassan Najafi was misspelled as Gholamhasan. For the reader’s convenience, the name has been corrected.


Acknowledgments

The authors acknowledge the financial support of Tarbiat Modares University (TMU) renewable laboratories to authorize and Iranian fuel conservation company (IFCO) to carry out this investigation.

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Published Online: 2015-8-21
Published in Print: 2015-10-1

©2015 by De Gruyter

Heruntergeladen am 12.11.2025 von https://www.degruyterbrill.com/document/doi/10.1515/ijfe-2015-0134/html?lang=de
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