Performance analysis of double-pass oscillating bed solar dryer for drying of non-parboiled paddy grains

Arul, G. P.; Shanmugam, S.; Veerappan, Ar.; Kumar, Prashant

doi:10.1080/15567036.2018.1520326

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…The specified material is used to store the solar energy in the form of latent heat, sensible heat and combination of both [15]. The newly harvested paddy grains have moisture content of 18-26% in wet basis [16,17]. At Present the main goal is to design and fabricate a dryer with less utilization of the power and superior quality of dried product [18].…”

Section: Introductionmentioning

confidence: 99%

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

Arul¹,

Thulasi²,

Kumar³

et al. 2022

Sustainability

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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°.

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Section: Introductionmentioning

confidence: 99%

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

Arul¹,

Thulasi²,

Kumar³

et al. 2022

Sustainability

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“…Several studies, has been concentrated on the drying of grain considered as a single porous particle and thin layers [58][59][60] of foods like vegetables and fruits [61]. Different mathematical models were developed to predict heat and mass transfer within the granular bed dryers without taking into account the shrinkage phenomenon [62][63][64].…”

Section: Introductionmentioning

confidence: 99%

Significance of Bed Shrinkage on Heat and Mass Transfer During the Transport Phenomenon of Humid Air

et al. 2021

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Simultaneous heat and mass transfer inside a packed bed dryer between a fluid phase and corn kernels was studied. A developed two-phase model for evaluating the effect of bed shrinkage and non-constant physical properties on the drying efficiency was conducted. Experimental data were utilized to develop the governing equations of the bed shrinkage and structural parameters with moisture content inside the packed bed dryer. The developed model was verified by assessing predictions against experimentally obtained moisture content and temperature along the drying bed, as the standard errors of the experimental values compared to the model were found to be close to the accepted engineering accuracy of 5%. It has been concluded that the incorporation of bed shrinkage and alteration in properties within the operating model is capable of providing a more comprehensive and precise analysis of heat and mass transfer phenomenon in porous media drying, such as corn kernels.

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Identification of barriers and drivers to implementation of solar drying technologies

Goel

Bhattacharyya

Kumar

et al. 2022

J Therm Anal Calorim

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Performance analysis of double-pass oscillating bed solar dryer for drying of non-parboiled paddy grains

Cited by 7 publications

References 14 publications

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

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

Significance of Bed Shrinkage on Heat and Mass Transfer During the Transport Phenomenon of Humid Air

Identification of barriers and drivers to implementation of solar drying technologies

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