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International Journal of Photoenergy
Volume 2016, Article ID 3814262, 8 pages
http://dx.doi.org/10.1155/2016/3814262
Research Article

Analysis on Photovoltaic Energy-Assisted Drying of Green Peas

Department of Biosystems Engineering, Faculty of Agriculture, Uludag University, 16059 Bursa, Turkey

Received 18 August 2016; Revised 23 October 2016; Accepted 10 November 2016

Academic Editor: Ke Ma

Copyright © 2016 Onur Taşkın et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A photovoltaic energy-assisted industrial dryer has been analyzed. The dryer has been tested in various weather and working conditions with 3 kg of green peas from 75.6% initial moisture content to 20% final moisture content (w.b.). The effect of various drying air temperatures at three levels (40, 50, and 60°C) and two distinct air velocities (3 m/s and 4 m/s) was examined. Drying performance was assessed with regard to criteria including drying kinetics, specific and total energy consumption, and color and rehydration ratio. The results have proved that total drying duration reduces as air velocity rate and drying air temperature raise. Relying upon the drying durations, the generation performances of photovoltaic panels were between 5.261 and 3.953 W. On the other part, energy consumptions of dryer were between 37.417 and 28.111 W. The best specific energy consumption was detected in 50°C at 3 m/s for 600 minutes with 7.616 kWh/kg. All drying conditions caused darkening as color parameters. Rehydration assays have showed that rehydrated green peas attained higher capacity with raised air temperature and air velocity.