The Hybrid (PVT) Double-Pass System with a Mixed-Mode Solar Dryer for Drying Banana

Jadallah, Abdullateef A.; Alsaadi, Mohammed K.; Hussien, Saifalddeen A.

doi:10.30684/etj.v38i8A.535

	The Hybrid (PVT) Double-Pass System with a Mixed-Mode Solar Dryer for Drying Banana
Engineering and Technology Journal
Article 13, Volume 38, 8A, 2020, Pages 1214-1225 PDF (1.34 M)
Document Type: Research Paper
DOI: 10.30684/etj.v38i8A.535
Authors
Abdullateef A. Jadallah¹; Mohammed K. Alsaadi²; Saifalddeen A. Hussien^* ²
¹Electromechanical Eng. Dept, University of Technology, Baghdad, Iraq.
²Electromechanical Eng. Dept., University of Technology, Baghdad, Iraq.
Abstract
This paper proposes a developed numerical and experimental design of a hybrid Photovoltaic-Thermal (PVT) double-pass counter-flow system connected with the mixed-mode solar dryer system. The mixed-mode solar dryer considers the most efficient mode because it has two heat sources, from solar radiation and the hot airflow which is supplied by the PVT system. The PVT system is often unused for drying applications; therefore, the whole proposed PVT solar system in this work is utilized for drying applications. This system is not only massive fuel savings, but also crucial to improve the quality of the dried product in terms of color, aroma, and taste. To verify the effectiveness and robustness of the proposed system, the system is utilized to dry 300g of slices of banana, where the obtained range of air temperature is from 43.2 to 60.2°C. The slices of banana are distributed identically between upper and lower trays. The initial moisture rate of banana was about 78%, and the most dropped in moisture content was from 78% to 28.12% in the lower tray at 0.031kg/s after 8 hours of the drying process. It was noticed that the most and least decreasing in weight of banana samples was from 150 to 48g and from 150 to 55g in lower and upper tray, respectively, at 0.031 and 0.017 kg/s mass flow rate. This gives an indication that the highest reduction was 68% of banana weight at a high mass flow rate of airflow. The critical parameter such as temperature distribution of the PVT with dryer room, useful heat gain, and thermal efficiency are computed by using the MATLAB 2015b program which is built for this purpose. The highest heat gain and thermal efficiencies were 423.7 and 52.98%, respectively, at 1:00 PM when the mass flow rate 0.031 kg/s.
Keywords
PVT system; Solar drying; Mixed-mode solar dryer; Heat gain

References
[1] S. Pushpendra, V. Shrivastava, and A. Kumar, “Recent developments in greenhouse solar drying: a review,” Renewable and Sustainable Energy Reviews 82: 3250-3262, 2018. [2] V. Saini, S. Tiwari, V. Gain, and G. Tiwari “Performance evaluation of different types PV materials for PVTAC with solar drying system, ” Materials Today Proceedings, 2019. [3] E. Mohamed, M.M. Azam, and A. O. Alghannam, “Energy analysis of hybrid solar tunnel dryer with PV system and solar collector for drying mint (MenthaViridis),” Journal of Cleaner Production 181: 352-364, 2018. [4] T. Sumit, S. Agrawal, and G. N. Tiwari, “PVT air collector integrated greenhouse dryers,” Renewable and Sustainable Energy Reviews 90: 142-159., 2018. [5] S.A. Hadi, and A. Arabhosseini, “Accelerating drying process of tomato slices in a PV-assisted solar dryer using a sun tracking system,” Renewable Energy 123: 428-438, 2018. [6] M. Fterich, M.H. Chouikhi, H. Bentaher, and A. Maalej, “Experimental parametric study of a mixed-mode forced convection solar dryer equipped with a PV/T air collector,” Solar Energy 171: 751-760, 2018. [7] E. Mohamed, M. M. Azam, and A.O. Alghannam, “Solar PV powered mixed-mode tunnel dryer for drying potato chips,” Renewable Energy 116: 594-605, 2018. [8] L. Abhay, V.P. Chandramohan, and V. R. K. Raju, “Design, development and performance of indirect type solar dryer for banana drying,” Energy Procedia 109: 409-416, 2017. [9] B. Ehsan, S. Ranjbar, and O. Boostanipour, “Experimental investigation of the performance of a mixed-mode solar dryer with thermal energy storage,” Renewable Energy 112: 143-150, 2017. [10] H. Essalhi, T. Rachid, and B. M. Najib, “Conception of a solar air collector for an indirect solar dryer, pear drying test,” Energy Procedia, 141: 29-33, 2017. [11] V.N. Hegde, V.S. Hosur, S.K. Rathod, and P.A. Harsoon, “Design, fabrication and performance evaluation of solar dryer for banana,” Energy, Sustainability and Society 5.1: 23, 2015. [12] https://www.mapsofworld.com/lat_long/iraq-lat-long.html [13] B. Sangram, and R. P. Saini, “A mathematical modeling framework to evaluate the performance of single diode and double diode based SPV systems,” Energy Reports 2: 171-187, 2016. [14] R. R. Kant, and R. P. Saini “A review on different techniques used for performance enhancement of double pass solar air heaters,” Renewable and Sustainable Energy Reviews 56: 941-952, 2016. [15] W. Chang, Y. Wang, M. Li, X. Lou, Y. Runa, Y. Hong, and S. Zhang, “The theoretical and experimental research on thermal performance of solar air collector with finned absorber,” Energy Procedia 70 : 13-22, 2015. [16] T. Sumit, and G. N. Tiwari, “Thermal analysis of photovoltaic-thermal (PVT) single slope roof integrated greenhouse solar dryer,” Solar Energy 138: 128-136, 2016. [17] E. Mohamed, M. M. Azam, and A. O. Alghannam, “Solar PV powered mixed-mode tunnel dryer for drying potato chips,” Renewable Energy 116: 594-605, 2018. [18] A. Fudholi, K. Sopian, M.Y. Othman, M.H. Ruslan, and B. Bakhtyar, “Energy analysis and improvement potential of finned double-pass solar collector,” Energy Conversion and Management 75: 234-240, 2013. [19] A. Karima, and H. M. T. Al-Najjar, “Analysis of thermal and electrical performance of a hybrid (PV/T) air based solar collector for Iraq,” Applied Energy 98: 384-395, 2012 .
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