Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah

Drying processes for heat reluctictant, such as pharmaceutical products(vitamin C), needed special handling for example a low temperature drying in order to minimize damage. The principle of drying processes dealt with heat and mass transfer simultaneously so mathematic models can be developed based...

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Main Author: Perpustakaan UGM, i-lib
Format: Article NonPeerReviewed
Published: [Yogyakarta] : Universitas Gadjah Mada 1998
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Online Access:https://repository.ugm.ac.id/26707/
http://i-lib.ugm.ac.id/jurnal/download.php?dataId=9746
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spelling id-ugm-repo.267072014-06-18T00:37:06Z https://repository.ugm.ac.id/26707/ Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah Perpustakaan UGM, i-lib Jurnal i-lib UGM Drying processes for heat reluctictant, such as pharmaceutical products(vitamin C), needed special handling for example a low temperature drying in order to minimize damage. The principle of drying processes dealt with heat and mass transfer simultaneously so mathematic models can be developed based on the heat and mass balances.These models were solved by numerical method while Kya and de constants can be evaluated with Hooke-Jeeves optimization method. The Experiment of drying processes at the Vitamin C was carried out in a drier set with fixed Bed columm at low temperature.The Operation variables were Reynold number, the ratio of bed thickness and columm diameter, humidity of air and the ratio of air temperature and solid temperature.Correlation of mass tranfer coefisient(Kya) and the axial effective diffusivity(DE) with operation variables can be expressed in sherwood's which is represented by the following emperical equation: sh=4.627.10.Re 0.09069(Z/Dt)0,1242Y0,1614(tg/Ts)0,5454 with an average error of 1.5% Axial effective diffusivity can be represented by the following emperical equation:De/Dab=8,056.10-3Re0,02005(Z/Dt)0,1046Y0,2323.(Tg/Ts)0,2264 with an average error of 1,6% These equation are valid for 15,9 [Yogyakarta] : Universitas Gadjah Mada 1998 Article NonPeerReviewed Perpustakaan UGM, i-lib (1998) Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah. Jurnal i-lib UGM. http://i-lib.ugm.ac.id/jurnal/download.php?dataId=9746
institution Universitas Gadjah Mada
building UGM Library
country Indonesia
collection Repository Civitas UGM
topic Jurnal i-lib UGM
spellingShingle Jurnal i-lib UGM
Perpustakaan UGM, i-lib
Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah
description Drying processes for heat reluctictant, such as pharmaceutical products(vitamin C), needed special handling for example a low temperature drying in order to minimize damage. The principle of drying processes dealt with heat and mass transfer simultaneously so mathematic models can be developed based on the heat and mass balances.These models were solved by numerical method while Kya and de constants can be evaluated with Hooke-Jeeves optimization method. The Experiment of drying processes at the Vitamin C was carried out in a drier set with fixed Bed columm at low temperature.The Operation variables were Reynold number, the ratio of bed thickness and columm diameter, humidity of air and the ratio of air temperature and solid temperature.Correlation of mass tranfer coefisient(Kya) and the axial effective diffusivity(DE) with operation variables can be expressed in sherwood's which is represented by the following emperical equation: sh=4.627.10.Re 0.09069(Z/Dt)0,1242Y0,1614(tg/Ts)0,5454 with an average error of 1.5% Axial effective diffusivity can be represented by the following emperical equation:De/Dab=8,056.10-3Re0,02005(Z/Dt)0,1046Y0,2323.(Tg/Ts)0,2264 with an average error of 1,6% These equation are valid for 15,9
format Article
NonPeerReviewed
author Perpustakaan UGM, i-lib
author_facet Perpustakaan UGM, i-lib
author_sort Perpustakaan UGM, i-lib
title Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah
title_short Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah
title_full Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah
title_fullStr Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah
title_full_unstemmed Koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah
title_sort koefisien perpindahan massa dan difusivitas efektif pada proses pengeringan dalam kolom fixed bed pada suhu rendah
publisher [Yogyakarta] : Universitas Gadjah Mada
publishDate 1998
url https://repository.ugm.ac.id/26707/
http://i-lib.ugm.ac.id/jurnal/download.php?dataId=9746
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