TY - JOUR ID - 72639 TI - Experimental and Theoretical Study of Thompson Seedless Grapes Drying using Solar Evacuated Tube Collector with Force Convection Method JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - warke, Arundhati AU - Auti, Abhijit AU - Pangavhane, Dilip AU - Ubale, Amol AD - Asociate Professor, Symbiosis Institute of Technology AD - Principla, Suman Ramesh Tulsani Technical Campus, Pune AD - MEchanical Engineering, COE awasari AD - Mechanical engineering, Zeal College of Engineering & Research, Pune Y1 - 2015 PY - 2015 VL - 28 IS - 12 SP - 1796 EP - 1801 KW - Evacuated tube solar dryer KW - Thompson grapes KW - drying kinetics KW - Forced Convection DO - N2 - An evacuated tube solar collector drier is designed and developed to study analytically and experimentally drying kinetics of Thompson seedless grapes in Pune, India. Drying experiments are carried out in the month of April- June for continuous three years from 2013-2015. During the experimentation, temperatures of hot and cold air at various places, ambient relative humidity and humidity variation in drying chamber, wind velocity and mass of the grape are measured on hourly basis. 10 kg of Thompson seedless grapes are dried in forced convection heat transfer mode from initial moisture content of 76% (wb) to final moisture content 15%(wb) in 37 hours. The drying is carried out under the uncontrolled conditions. The average evacuated tube solar collector efficiency is found 24.5% where as the stacked type dryer which is insulated from outside has given drying efficiency up to 37.1%. To study drying behavior analytically nine different drying models have been tested. It is observed that, Page model describe the drying behavior accurately with highest coefficient of determination (R2 = 0.993), lowest reduced chi-square (χ2 = 5.19x10-5) and lowest root mean square error (RMSE = 0.02071). UR - https://www.ije.ir/article_72639.html L1 - https://www.ije.ir/article_72639_a953f82b739adbaf6c16a1c7756ed924.pdf ER -