Drying kinetics and thermo-environmental analysis of a PV-operated tracking indirect solar dryer for tomato slices.

Autor: Elwakeel AE; Agricultural Engineering Department, Faculty of Agriculture and Natural Resources, Aswan University, Aswan, Egypt., Gameh MA; Soils and Water Department, Faculty of Agriculture, Assiut University, Assiut, Egypt., Oraiath AAT; Department of Agricultural Engineering, Faculty of Agriculture, Omar Al Mukhtar University, Al Bayda, Libya., Elzein IM; Department of Electrical Engineering, College of Engineering and Technology, University of Doha for Science and Technology, Doha, Qatar., Eissa AS; Agricultural Products Process Engineering Department, Faculty of Agricultural Engineering, Al-Azhar University, Cairo, Egypt., Mahmoud MM; Electrical Engineering Department, Faculty of Energy Engineering, Aswan University, Aswan, Egypt., Mbadjoun Wapet DE; National Advanced School of Engineering, Universit´e de Yaound´e I, Yaound´e, Cameroon., Hussein MM; Electrical Engineering Department, Faculty of Energy Engineering, Aswan University, Aswan, Egypt.; Department of Communications Technology Engineering, Technical College, Imam Ja'afar Al-Sadiq University, Baghdad, Iraq., Tantawy AA; Food Science and Technology Department, Faculty of Agriculture and Natural Resources, Aswan University, Aswan, Egypt., Mostafa MB; Agricultural Engineering Department, Faculty of Agriculture and Natural Resources, Aswan University, Aswan, Egypt., Metwally KA; Soil and Water Sciences Department, Faculty of Technology and Development, Zagazig University, Zagazig, Egypt.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2024 Oct 15; Vol. 19 (10), pp. e0306281. Date of Electronic Publication: 2024 Oct 15 (Print Publication: 2024).
DOI: 10.1371/journal.pone.0306281
Abstrakt: The purpose of this study is to investigate how a tracking indirect solar dryer (SD) powered by photovoltaic cells affected the drying kinetics (DK) and thermo-environmental conditions of tomato slices. In this current investigation, three air speeds (1, 1.5, and 2 m/s) are used, as well as three slice thicknesses (ST) (4, 6, and 8 mm) and two SD, one of which is integrated with fixed collector motion (FCM) and another with SD tracking collector motion (TCM). The obtained results showed that the drying time (DT) isn't significantly change with increasing air speeds from 1 to 2 m/s, this may be due to many reasons such as short DT, high temperature inside drying room, and little difference between the exanimated air speeds. When the ST is changed from 4 to 8 mm and maintaining constant air speeds, the DT for FCM and TCM rose by roughly 1.667 and 1.6 times, respectively. In addition, the drying coefficient of the TCM is higher than the FCM due to higher temperature. At 1.5 m/s air speed and 8 mm ST, the maximum values of moisture diffusivity (MD) are 7.15×10-10 and 9.30×10-10 m2/s for both FCM and TCM systems, respectively. During the study of DK, nine drying models and chose the best based on higher R2 and lower χ2 and RMSE are used. The findings of the DK analysis revealed that the modified two term II model fit the experimental data of various air speeds well when TF was dried using TCM and FCM systems at varying ST. These findings are based on recorded observations. Where the models' R2 values varied from 0.98005 to 0.99942 for FCM system and varied from 0.99386 to 0.99976 for TCM system. Regarding environmental analysis, it is found that the CO2 mitigation per lifetime is ranged between 5334.9-6795.4 tons for FCM and 6305.7-6323.3 tons for TCM.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Elwakeel et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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