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Kinetics and mathematical modeling of drying of parboiled paddy in a packed bed dryer

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dc.contributor.author Anuththara, JGM
dc.contributor.author Edirisinghe, EAVU
dc.contributor.author Amarsinghe, BMWPK
dc.contributor.editor Rathnasiri, PG
dc.date.accessioned 2022-04-29T11:07:41Z
dc.date.available 2022-04-29T11:07:41Z
dc.date.issued 2019
dc.identifier.citation Anuththara, J.G.M., Edirisinghe, E.A.V.U., & Amarsinghe, B.M.W.P.K. (2019). Kinetics and mathematical modeling of drying of parboiled paddy in a packed bed dryer [Extended Abstract]. In P.G. Rathnasiri (Ed.), Undergraduate Research Symposium Chemical and Process Engineering 2019 (pp. 76-79). Department of Chemical and Process Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/17751
dc.description.abstract Drying characteristics of 2 types of parboiled paddy (“Nadu” & “Samba”) was investigated in a packed bed dryer. Drying experiments for both paddy types were carried out at three different hot air temperatures 35oC, 45oC and 55oC by keeping constants hot air flow velocity and bed height as 5.8 m/s and 15 cm respectively. Moisture content was measured at different time intervals. Experimental results were fitted to three thin layer drying models; Midilli et. al., Weibull et. al. and Page. Statistical indicator; Root mean square error (RMSE) showed Midilli et. al., Weibull et. al. models give better fit to the experimental values. The absence of the constant drying rate period in drying curves show the drying of parboiled paddy lies totally in the falling rate period where the drying rate is controlled by the moisture diffusion. Maximum drying rates were observed for both paddies. Effective moisture diffusivity values were calculated for different temperatures. The Activation energy of “Nadu” and “Samba” are calculated based on the Arrhenius equation are 33389.024 J/mol and 16776 J/mol respectively. en_US
dc.language.iso en en_US
dc.publisher Department of Chemical and Process Engineering, University of Moratuwa en_US
dc.subject Paddy drying en_US
dc.subject Packed bed dryer en_US
dc.subject Thin layer model en_US
dc.title Kinetics and mathematical modeling of drying of parboiled paddy in a packed bed dryer en_US
dc.type Conference-Extended-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Chemical and Process Engineering en_US
dc.identifier.year 2019 en_US
dc.identifier.conference Undergraduate Research Symposium Chemical and Process Engineering 2019 en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos pp. 76-79 en_US
dc.identifier.proceeding Proceedings of Undergraduate Research Symposium Chemical and Process Engineering 2019 en_US
dc.identifier.email padma@cheng.mrt.ac.lk en_US


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