https://orcid.org/0000-0001-6606-5411
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ABSTRACT
A solar dryer that uses solar radiation and a mixed mode of operation was installed. The dryer includes a flat plate collector with 1.12 m2 area covered by 5.0 mm glass. It has two trays for holding potato slices in the drying chamber. Meteorological data, including solar intensity, relative humidity, atmospheric temperature, and wind speed, were recorded. The initial moisture content of the potato slices, which were 2.5 mm thick, was 85.90%. In the forced convection drying mode, the moisture content decreased to 14.10% in 8 hours, while the natural convection mode required 14 hours to reach 14.75%. Forced and natural convection dryings were much faster compared to open sun drying. Air moves through the collector at a speed of 1.1 m/s during forced convection. The moisture ratio varied from 0.4750 to 0.0010 for forced convection drying and from 0.4095 to 0.02646 for natural convection drying. The maximum dryer efficiency was 32.95% for forced convection drying and 26.62% for natural convection drying. The little difference attained between natural and forced convections can be due to the fact that the experiments are not made in the same moment.
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Notes on contributors
Satish Kumar
Satish Kumar is presently pursuing his Ph.D. through the AICTE Doctoral Fellowship from Chhattisgarh Swami Vivekanand Technical University, Bhilai, Chhattisgarh, India. He received his Bachelor of Engineering (Honours) in 2014, and Master of Technology (Honours) in 2019. He has published 5 articles in peer-reviewed journals and attended 3 international conferences. His area of interest is solar thermal technologies, solar drying, and solar water heating.
Neelam Dewangan
Neelam Dewangan received her Bachelor of Engineering (Honors) From Government Engineering College (GEC) Jagdalpur (2019), Master of Technology (Honors) in Energy and Environmental Engineering department of University Teaching Department (UTD) from Chhattisgarh Swami Vivekanand Technical University (2022), Bhilai, Chhattisgarh, India. She has published one research article in SCI journal. Her research interest are Renewable energy and Solar Drying Technology.
Geetanjali Verma
Geetanjali Verma received her Bachelor of Engineering (Honours) from Sun Engineering College (SEC) Chandkhuri, Durg (2015), Master of Technology in Energy and Environmental Engineering Department of University Teaching Department (UTD) from Chhattisgarh Swami Vivekanand Technical University (2022), Bhilai, Chhattisgarh, India. She has published one research article in the SCI journal. Her area of interest is Solar Drying technology.
Harish Kumar Ghritlahre
Harish Kumar Ghritlahre received his Bachelor of Engineering (BE) from GEC Jagdalpur CG (2007), M. Tech from NIT Raipur CG (2012), and PhD from NIT Jamshedpur JH (2019). He is an Assistant Professor in Energy & Environmental Engineering Department in Chhattisgarh Swami Vivekanand Technical University (CSVTU), Bhilai, Chhattisgarh, India. His research interests are renewable energy, solar thermal applications, power plants, and artificial neural networks. He has published 45 articles in peer-reviewed journals of international reputation.
Manoj Verma
Manoj Verma is an Assistant Professor in Dept. of Energy & Environmental engineering, at the University Teaching Department in CSVTU – Bhilai, India. He holds a Doctor of Philosophy PhD focused in Wind Energy from NIT Bhopal (MP) and Master in Energy Technology with Gold Medal and Mechanical Engineer by graduation. He has published more than 40 research paper in reputed International/ National journals.
Yogesh Kumar
Yogesh Kumar pursuing his Ph.D. from Chhattisgarh Swami Vivekanand Technical University, Bhilai, Chhattisgarh, India. He received his Bachelor of Engineering in 2011, and Master of Technology from Chhattisgarh Swami Vivekanand Technical University, Bhilai, Chhattisgarh, India. He has published 6 articles in peer-reviewed journals and attended 3 international conferences. His area of interest is solar thermal technologies, solar water heating, and solar drying.
Sanjay Agrawal
Sanjay Agrawal is Pro Vice-Chancellor of Chhattisgarh Swami Vivekanand Technical University (CSVTU) Bhilai, and a Professor in Electrical Engineering at, School of Engineering and Technology, Indira Gandhi National Open University (IGNOU), New Delhi. He is the recipient of the prestigious Bhaskara Solar Energy Fellowship from the Indo-US Science and Technology Forum (IUSSTF) and the Department of Science and Technology (DST), India. This led him to his Post Doctoral Fellowship from Smart Grid Energy Research Centre, University of California, Los Angeles (UCLA), USA. Prof. Agrawal received his Ph.D. from the Indian Institute of Technology, Delhi. He has 20 years of rich teaching and research experience with a specialization in Electrical Engineering. He has published more than 80 papers in international journals and authored three books. According to Google Scholar, his total citation is over 1700 with an i-10 index 29 and h-index 23. He has presented papers in Sweden, Spain and the USA and has given more than 50 invited talks in reputed organizations. He has also published a patent, titled ‘Improved Hybrid Solar Collector. His areas of interest include grid-connected photovoltaic systems, micro-grids, solar PV water pumping systems, power electronics, electrical machines, circuit theory, power systems and hybrid solar thermal. His industrial experience includes working with MNCs like Johnson Control (I) PVT Ltd. He has worked on Projects like ‘Automatic power factor correction’ funded by Applied Electro-Magnetic (P) Ltd, ‘Improved hybrid solar cooker’ and ‘green house dryer’ funded by TEQIP through CSVTU, Bhilai. He has guided 08 Ph.D. scholars so far and is a member of the editorial board and panel of reviewers of reputed international journals.
Shiena Shekhar
Shiena Shekhar currently serves as a Professor and Head of the Department of Mechanical Engineering, Bhilai Institute of Technology, Durg. She received her Undergraduate and Post-Graduation from P.S.G. College of Technology, Coimbatore. She received her Doctoral Degree of Mechanical Engineering from Chhattisgarh Swami Vivekananda University, Bhilai, Chhattisgarh. She has an experience of 27 years in teaching and published articles in peer-reviewed journals, Patents and book chapters in her area of interest. She is a representative of ALL INDIA STUDENTS’ COMMITTEE (ALSC). She has been awarded “Lady Engineer” by Institution of Engineers (India), awarded as “100 Most Dedicated Professors” by World Education Congress, and Research Excellence Award 2020 for Paper Publication in WEB of SCIENCE by InSc. Was felicitated by the Governor of Chhattisgarh, His Excellency Shri Shekhar Dutt for my research work in Technical Education. Had the opportunity to deliver speeches as Keynote Speaker and technical Expert speaker in a few reputed Engineering colleges and in AICTE ATAL. Member in Professional Bodies like the Institution of Engineers (I), Indian Society of Technical Education (ISTE), Quality Circle Forum of India (QCFI), International Association of Engineers (IAENG), Professional Member in Institute of Scholars (InSc). Member in the editorial board, reviewer in the International Journal. Coordinator & mentor for NPTEL online course in the department. Have been a recipient of TOP PERFORMING MENTOR in NPTEL online courses since 2016. Her research interest includes Industrial Engineering, Quality Control, Production Engineering, CAD/CAM/CIM. She is guiding 7 Ph.D. scholars at present.