Experimental comparison of solar drying based on evacuated tube collector with desiccant drying for dehydrating potato and ginger
Shubham Vyas
Department of Mechanical Engineering, MIT Moradabad, Moradabad, India
Search for more papers by this authorPrashant Singh
Department of Mechanical Engineering, MIT Moradabad, Moradabad, India
Search for more papers by this authorCorresponding Author
Himanshu Agrawal
Department of Mechanical Engineering, RBCET Bareilly, Kareli, India
Correspondence Himanshu Agrawal, Department of Mechanical Engineering, RBCET Bareilly, Kareli, India.
Email: [email protected]
Search for more papers by this authorGopal Vishwakarma
Department of Mechanical Engineering, RBCET Bareilly, Kareli, India
Search for more papers by this authorAvadhesh Yadav
National Institute of Solar Energy, Gurugram, India
Search for more papers by this authorShubham Vyas
Department of Mechanical Engineering, MIT Moradabad, Moradabad, India
Search for more papers by this authorPrashant Singh
Department of Mechanical Engineering, MIT Moradabad, Moradabad, India
Search for more papers by this authorCorresponding Author
Himanshu Agrawal
Department of Mechanical Engineering, RBCET Bareilly, Kareli, India
Correspondence Himanshu Agrawal, Department of Mechanical Engineering, RBCET Bareilly, Kareli, India.
Email: [email protected]
Search for more papers by this authorGopal Vishwakarma
Department of Mechanical Engineering, RBCET Bareilly, Kareli, India
Search for more papers by this authorAvadhesh Yadav
National Institute of Solar Energy, Gurugram, India
Search for more papers by this authorAbstract
In this article, a comparative study of different drying techniques, namely, open sun drying (OSD), desiccant drying, solar drying (SD), and solar drying with desiccant (SDWD) was done for drying potato and ginger. The thermal efficiency and air temperature differences of the solar dryer based on evacuated tube collectors were also examined. The average efficiency of the solar dryer was 29.01%. Average drying rates of OSD, desiccant drying, SD, and SDWD bed are 0.435, 0.435, 0.59, and 0.635 g/min. The moisture content of the potato was reduced from 79.6% to 32.9% by OSD, 32.6% by desiccant drying, 9.6% by SD, and 6.9% by SDWD. The moisture content of the ginger was reduced from its initial value of 82.3%–25.3% by OSD, 25% by desiccant drying, 10.1% by SD, and 3.2% by SDWD. SD assisted with a desiccant bed proved to be the best method for drying vegetables. Drying with desiccants is not feasible for drying in winter and spring seasons of the Indian climate.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.
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