Investigation of Dual–Pass Inclined Oscillating Bed Solar Dryer for Drying of Non-Parboiled Paddy Grains

Ganapathy Ponnambalam Arul, Selvam Thulasi, Pitchaipillai Kumar, Veeranan Arunprasad, Saboor Shaik, Mohamed Abbas, Parvathy Rajendran, Sher Afghan Khan and C. Ahamed Saleel
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Ganapathy Ponnambalam Arul: Department of Mechanical Engineering, Indra Ganesan College of Engineering, Srirangam 620012, Tamil Nadu, India
Selvam Thulasi: Department of Mechanical Engineering, University College of Engineering, Thirukkuvalai, Nagappattinam 610201, Tamil Nadu, India
Pitchaipillai Kumar: Department of Mechanical Engineering, Ariyalur Engineering College, Ariyalur 621704, Tamil Nadu, India
Veeranan Arunprasad: Department of Mechanical Engineering, Theni Kammavar Sangam College of Technology, Koduvilarpatti, Theni 625534, Tamil Nadu, India
Saboor Shaik: School of Mechanical Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
Mohamed Abbas: Electrical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
Parvathy Rajendran: School of Aerospace Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, Malaysia
Sher Afghan Khan: Department of Mechanical Engineering, Faculty of Engineering, International Islamic University, Kuala Lumpur 53100, Selangor, Malaysia
C. Ahamed Saleel: Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia

Sustainability, 2022, vol. 14, issue 9, 1-13

Abstract: This Paper determines an experimental study of dual-pass solar dryer with a bed tilt of 0.5° and varying oscillating frequency of drying chamber namely 1.25, 1.75 and 2.25 Hz for drying an agricultural produce namely non–parboiled paddy grains. The oscillations and bed tilt are provided to move the grains from entry to exit of the top bed and moving down to bottom bed and finally exits from the dryer. The new technology has been used in the solar dryer for drying of agricultural produce such as non–parboiled paddy grains to increase the quality and to decrease the loss of the dried produce. The present dryer model was used for drying 45 kg of non–parboiled paddy grains from 19% (w.b) to the approved range of 12–14% of moisture content obtained in a single experimental day. The dried paddy grains obtained an average moisture content are 13.03, 13.22 and 13.51% at the frequency of oscillation of 1.25, 1.75, 2.25 Hz, respectively. The maximum thermal and pick-up efficiency of the model were obtained at 1.00 p.m. in all cases. For the frequency of oscillation of 1.25, 1.75 and 2.25 Hz, the maximum dryer thermal efficiency was 44.47, 43.39 and 41.39%, respectively, and the maximum pick–up efficiency was 80.41, 79.19 and 76.21%, respectively. The optimum drying performance was obtained at the oscillating frequency of 1.75 Hz with the bed tilt of 0.5°.

Keywords: dual–pass oscillating bed solar dryer; dual–pass flat plate solar collector; thermal efficiency of the dryer; pick–up efficiency; moisture content; non–parboiled paddy grains (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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