Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice

In view of existing problems in the drying process of germinated brown rice (GBR), the self-made hot air drying test system was utilized. The drying medium temperature and wind speed were selected as the drying parameters, and different constraints were set for the test. The effects of the drying me...

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Main Authors:	Yu, Zhenwei, Yousaf, Khurram, Wang, Yu, Chen, Kunjie
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2019
Online Access:	http://journalarticle.ukm.my/14368/ http://journalarticle.ukm.my/14368/ http://journalarticle.ukm.my/14368/1/04%20Zhenwei%20Yu.pdf

id	ukm-14368
recordtype	eprints
spelling	ukm-143682020-03-10T02:21:01Z http://journalarticle.ukm.my/14368/ Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice Yu, Zhenwei Yousaf, Khurram Wang, Yu Chen, Kunjie In view of existing problems in the drying process of germinated brown rice (GBR), the self-made hot air drying test system was utilized. The drying medium temperature and wind speed were selected as the drying parameters, and different constraints were set for the test. The effects of the drying medium temperature and wind speed on the drying rate and unit energy consumption were examined, and the drying mathematical models of GBR were established. The results perceived that as the temperature rose, and the wind speed increased, the drying rate increased accordingly. When the temperature was above 95°C, wind speed exceeded 3.6 m/s; the drying rate would not change deliberately. When the temperature of the drying medium rose, the change rate during the drying preheating stage and the deceleration stage increased sharply, whereas the drying rate in the constant-speed drying stage increased, and the drying time was greatly shortened. Unit energy consumption decreased with the increase of temperature and increased with increasing wind speed. Furthermore, when the drying temperature was ranged between 50°C and 80°C, the unit energy consumption changed meaningfully; when the medium temperature was between 80°C and 110°C, the unit heat consumption turned slowly. Wang and Singh’s model could best simulate the drying process of GBR within the experimental settings. And then comparing the RMSE and under the various dry conditions, the data of Wang and Singh model were between 1.6% - 2.8% and 2.5×10-4 - 5×10-4. The R2 values of the model were higher than 0.98. Penerbit Universiti Kebangsaan Malaysia 2019-10 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/14368/1/04%20Zhenwei%20Yu.pdf Yu, Zhenwei and Yousaf, Khurram and Wang, Yu and Chen, Kunjie (2019) Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice. Sains Malaysiana, 48 (10). pp. 2093-2101. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid48bil10_2019/KandunganJilid48Bil10_2019.htm
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	In view of existing problems in the drying process of germinated brown rice (GBR), the self-made hot air drying test system was utilized. The drying medium temperature and wind speed were selected as the drying parameters, and different constraints were set for the test. The effects of the drying medium temperature and wind speed on the drying rate and unit energy consumption were examined, and the drying mathematical models of GBR were established. The results perceived that as the temperature rose, and the wind speed increased, the drying rate increased accordingly. When the temperature was above 95°C, wind speed exceeded 3.6 m/s; the drying rate would not change deliberately. When the temperature of the drying medium rose, the change rate during the drying preheating stage and the deceleration stage increased sharply, whereas the drying rate in the constant-speed drying stage increased, and the drying time was greatly shortened. Unit energy consumption decreased with the increase of temperature and increased with increasing wind speed. Furthermore, when the drying temperature was ranged between 50°C and 80°C, the unit energy consumption changed meaningfully; when the medium temperature was between 80°C and 110°C, the unit heat consumption turned slowly. Wang and Singh’s model could best simulate the drying process of GBR within the experimental settings. And then comparing the RMSE and under the various dry conditions, the data of Wang and Singh model were between 1.6% - 2.8% and 2.5×10-4 - 5×10-4. The R2 values of the model were higher than 0.98.
format	Article
author	Yu, Zhenwei Yousaf, Khurram Wang, Yu Chen, Kunjie
spellingShingle	Yu, Zhenwei Yousaf, Khurram Wang, Yu Chen, Kunjie Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice
author_facet	Yu, Zhenwei Yousaf, Khurram Wang, Yu Chen, Kunjie
author_sort	Yu, Zhenwei
title	Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice
title_short	Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice
title_full	Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice
title_fullStr	Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice
title_full_unstemmed	Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice
title_sort	experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2019
url	http://journalarticle.ukm.my/14368/ http://journalarticle.ukm.my/14368/ http://journalarticle.ukm.my/14368/1/04%20Zhenwei%20Yu.pdf
first_indexed	2023-09-18T20:06:56Z
last_indexed	2023-09-18T20:06:56Z
_version_	1777407220645888000

Experimental study of drying characteristics and mathematical modeling for air drying of germinated brown rice

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