<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>UTas ePrints - Modelling and simulation of Paddy grain (Rice) drying in a simple pneumatic dryer</title>
<script type="text/javascript" src="http://eprints.utas.edu.au/javascript/auto.js"><!-- padder --></script>
<style type="text/css" media="screen">@import url(http://eprints.utas.edu.au/style/auto.css);</style>
<style type="text/css" media="print">@import url(http://eprints.utas.edu.au/style/print.css);</style>
<link rel="icon" href="/images/eprints/favicon.ico" type="image/x-icon" />
<link rel="shortcut icon" href="/images/eprints/favicon.ico" type="image/x-icon" />
<link rel="Top" href="http://eprints.utas.edu.au/" />
<link rel="Search" href="http://eprints.utas.edu.au/cgi/search" />
<meta content="Bunyawanichakul, Pracha" name="eprints.creators_name" />
<meta content="Walker, Greg J." name="eprints.creators_name" />
<meta content="Sargison, Jane E." name="eprints.creators_name" />
<meta content="Doe, Peter E." name="eprints.creators_name" />
<meta content="prachab@postoffice.sandybay.utas.edu.au" name="eprints.creators_id" />
<meta content="Greg.Walker@utas.edu.au" name="eprints.creators_id" />
<meta content="Jane.Sargison@utas.edu.au" name="eprints.creators_id" />
<meta content="" name="eprints.creators_id" />
<meta content="article" name="eprints.type" />
<meta content="2007-10-22 12:28:55" name="eprints.datestamp" />
<meta content="2008-01-08 15:30:00" name="eprints.lastmod" />
<meta content="show" name="eprints.metadata_visibility" />
<meta content="Modelling and simulation of Paddy grain (Rice) drying in a simple pneumatic dryer" name="eprints.title" />
<meta content="pub" name="eprints.ispublished" />
<meta content="290501" name="eprints.subjects" />
<meta content="restricted" name="eprints.full_text_status" />
<meta content="Grain drying, heat and mass transfer, paddy drying" name="eprints.keywords" />
<meta content="The definitive version is available online at http://www.sciencedirect.com/" name="eprints.note" />
<meta content="The paper describes paddy grain (rice) drying in a pneumatic conveyor where gas–particle heat and mass
transfer occur simultaneously with transporting and drying operations. A one-dimensional macroscopic
drying model of the overall bed incorporating mass and energy balances and drying kinetics of moisture
diffusion inside the paddy grain is developed. The set of coupled non-linear ordinary differential equations is
solved numerically to illustrate the evolution of moisture and temperature of the paddy grain and air stream
throughout the dryer length. The effect of specific airflow rate, which depends on dryer diameter, paddy feed
rate and inlet-air velocity on the final moisture content, and temperature of paddy grain and air stream is
studied. The feasibility of paddy drying in a pneumatic conveyor is evaluated using the developed model. This
device is found impractical for drying of hygroscopic material such as paddy grain because of the low solid
residence time for dryers of reasonable size." name="eprints.abstract" />
<meta content="2007-03" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Biosystems Engineering" name="eprints.publication" />
<meta content="96" name="eprints.volume" />
<meta content="3" name="eprints.number" />
<meta content="335-344" name="eprints.pagerange" />
<meta content="10.1016/j.biosystemseng.2006.11.004" name="eprints.id_number" />
<meta content="TRUE" name="eprints.refereed" />
<meta content="1537-5110" name="eprints.issn" />
<meta content="http://dx.doi.org/10.1016/j.biosystemseng.2006.11.004" name="eprints.official_url" />
<meta content="Brooker D B; Bakker-Arkema F W; Hall C W (1992). Drying
and Storage of Grains and Oilseeds. AVI Book Publishing,
New York
Crowe C; Sommerfield M; Tsuji Y (1997). Multiphase Flows
with Droplets and Particles. CRC Press, London
Debrand S (1974). Heat transfer during a flash drying process.
I&EC Process Design Development, 13, 396–404
De Padua D B (1985). Requirements for drying high moisture
content grain in Southeast Asia, preserving grain quality by
aeration and in-store drying. Proceedings of International
Seminar, pp 45–49, Kuala Lumpur, Malaysia.
Discroll R H; Adanezak T (1987). Drying Systems for The
Humid Tropics, bulk handling and storage of grain in
humid tropics. Proceedings of International Seminar,
pp 58–69, Kuala Lumpur, Malaysia
Inprasit C; Noomhorm A (2001). Effect of drying air
temperature and grain temperature of different types of
dryer operation on rice quality. Drying Technology, 19,
389–404
Jindal V K; Obaldo L G (1986). Rice husk-fired dryer for
disinfestation and rapid drying of paddy. Paper No. 86–202
presented at the Ninth Annual ASEAN Grains Post-harvest
Technology Seminar (Singapore). ASEAN Crops Postharvest
Programme, Manila, Philippines
Kunze O R; Calderwood D L (1980). Systems for Drying Rice,
Drying and Storage of Agricultural Crops. AVI Pub. Co.
Ltd., Connecticut, USA
Laithong C (1987). Study of thermo-physical properties of
rough rice. Master Thesis, Faculty of Energy and Materials,
King Mongkut’s Institute of Technology Thonburi, Bangkok,
Thailand
LevyA; Borde I (1999). Steady state one-dimensional flow for
a pneumatic dryer, Chemical Engineering and Process, 38,
121–130
Mujumdar A S (1995). Handbook of Industrial Drying, 2nd
edn. Marcel Dekker, Inc., New York
Pakowski Z; Bartczak Z; Strumillo C; Stenstrom S (1991).
Evaluation of Equations approximating thermodynamic
and transport properties of water, steam and air for use in
CAD of drying process. Drying Technology, 9, 753–773
Pelegrina A H; Crapiste G H (2001). Modelling the pneumatic
drying of food particles. Journal of Food Engineering, 48,
301–310
Poomsaad N; Soponronnarit S; Therdyotin A (2000). Diffusion
model of paddy drying by fluidization technique,
pp 777–782. Proceedings of the 14th Memorial CIGR
World Congress, Japan
Saastamoinen J (1992). Model of flash drying. In: Drying’92
(Mujumdar A S, ed), pp 434–443. Amsterdam, Netherlands
Sutherlland J W; GhalyT F (1990). Rapid fluidized bed drying
of paddy in the humid tropics, pp 1–12. Proceedings of the
13th ASEAN Seminar on Grain Post Harvest Technology,
Brunai
Soponronnarit S; Yapha M; Prachayawarakorn S (1995).
Cross-flow fulidized bed paddy drier: Prototype and
commercialization. Drying Technology, 13, 2207–2216
Steffe J F; Singh R P (1982). Diffusion coefficients for
predicting rice drying behaviour. Journal of Agricultural
Engineering Research, 27, 489–493
Strumillo C; Kudra T (1986). Drying: Principles, Application
and Design. Gordon & Breach Science Publishers, New York
Thorpe G R; Wint A; Coggan G C (1973). The mathematical
modelling of industrial pneumatic dryer. Transactions of the
Instution of Chemical Engineering Research, 51, 339–349
Tumambing J A (1986). Current drying practices and need
in ASEAN, Bulk handling and storage of grain in the
humid tropics, pp 48–53. Proceedings of an International
Workshop, Kuala Lumpur, Malaysia
Wetchacama S; Soponronnarit S; Swasdisevi T; Prachayawarakorn
S; Panich-ing-orn J; Suthicharoenpanich S (2001).
Drying of high moisture paddy by two-dimensional spouted
technique. Kasetsart Journal (National Science), 35, 93–103
Whitaker S (1972). Forced convection heat transfer correlation
for flow in pipes, past flat plates, single cylinders, single
spheres and for flow in packed beds and tube bundles.
American Institute of Chemical Engineering, 18, 361–371
Wilhelm L R (1976). Numerical calculation of psychrometric
properties in SI units. Transactions of ASAE, 19, 318–325
ARTICLE IN PRESS
P. BUNYAWANICHAKUL 344 ET AL." name="eprints.referencetext" />
<meta content="Bunyawanichakul, Pracha and Walker, Greg J. and Sargison, Jane E. and Doe, Peter E. (2007) Modelling and simulation of Paddy grain (Rice) drying in a simple pneumatic dryer. Biosystems Engineering, 96 (3). pp. 335-344. ISSN 1537-5110" name="eprints.citation" />
<meta content="http://eprints.utas.edu.au/2241/1/BioSystem_Paper.pdf" name="eprints.document_url" />
<link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" />
<meta content="Modelling and simulation of Paddy grain (Rice) drying in a simple pneumatic dryer" name="DC.title" />
<meta content="Bunyawanichakul, Pracha" name="DC.creator" />
<meta content="Walker, Greg J." name="DC.creator" />
<meta content="Sargison, Jane E." name="DC.creator" />
<meta content="Doe, Peter E." name="DC.creator" />
<meta content="290501 Mechanical Engineering" name="DC.subject" />
<meta content="The paper describes paddy grain (rice) drying in a pneumatic conveyor where gas–particle heat and mass
transfer occur simultaneously with transporting and drying operations. A one-dimensional macroscopic
drying model of the overall bed incorporating mass and energy balances and drying kinetics of moisture
diffusion inside the paddy grain is developed. The set of coupled non-linear ordinary differential equations is
solved numerically to illustrate the evolution of moisture and temperature of the paddy grain and air stream
throughout the dryer length. The effect of specific airflow rate, which depends on dryer diameter, paddy feed
rate and inlet-air velocity on the final moisture content, and temperature of paddy grain and air stream is
studied. The feasibility of paddy drying in a pneumatic conveyor is evaluated using the developed model. This
device is found impractical for drying of hygroscopic material such as paddy grain because of the low solid
residence time for dryers of reasonable size." name="DC.description" />
<meta content="2007-03" name="DC.date" />
<meta content="Article" name="DC.type" />
<meta content="PeerReviewed" name="DC.type" />
<meta content="application/pdf" name="DC.format" />
<meta content="http://eprints.utas.edu.au/2241/1/BioSystem_Paper.pdf" name="DC.identifier" />
<meta content="http://dx.doi.org/10.1016/j.biosystemseng.2006.11.004" name="DC.relation" />
<meta content="Bunyawanichakul, Pracha and Walker, Greg J. and Sargison, Jane E. and Doe, Peter E. (2007) Modelling and simulation of Paddy grain (Rice) drying in a simple pneumatic dryer. Biosystems Engineering, 96 (3). pp. 335-344. ISSN 1537-5110" name="DC.identifier" />
<meta content="http://eprints.utas.edu.au/2241/" name="DC.relation" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/BibTeX/epprod-eprint-2241.bib" title="BibTeX" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/ContextObject/epprod-eprint-2241.xml" title="OpenURL ContextObject" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/ContextObject::Dissertation/epprod-eprint-2241.xml" title="OpenURL Dissertation" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/ContextObject::Journal/epprod-eprint-2241.xml" title="OpenURL Journal" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/DC/epprod-eprint-2241.txt" title="Dublin Core" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/DIDL/epprod-eprint-2241.xml" title="DIDL" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/EndNote/epprod-eprint-2241.enw" title="EndNote" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/HTML/epprod-eprint-2241.html" title="HTML Citation" type="text/html; charset=utf-8" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/METS/epprod-eprint-2241.xml" title="METS" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/MODS/epprod-eprint-2241.xml" title="MODS" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/RIS/epprod-eprint-2241.ris" title="Reference Manager" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/Refer/epprod-eprint-2241.refer" title="Refer" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/Simple/epprod-eprint-2241text" title="Simple Metadata" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/Text/epprod-eprint-2241.txt" title="ASCII Citation" type="text/plain; charset=utf-8" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2241/XML/epprod-eprint-2241.xml" title="EP3 XML" type="text/xml" />
</head>
<body bgcolor="#ffffff" text="#000000" onLoad="loadRoutine(); MM_preloadImages('images/eprints/ePrints_banner_r5_c5_f2.gif','images/eprints/ePrints_banner_r5_c7_f2.gif','images/eprints/ePrints_banner_r5_c8_f2.gif','images/eprints/ePrints_banner_r5_c9_f2.gif','images/eprints/ePrints_banner_r5_c10_f2.gif','images/eprints/ePrints_banner_r5_c11_f2.gif','images/eprints/ePrints_banner_r6_c4_f2.gif')">
<div class="ep_noprint"><noscript><style type="text/css">@import url(http://eprints.utas.edu.au/style/nojs.css);</style></noscript></div>
<table width="795" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><script language="JavaScript1.2">mmLoadMenus();</script>
<table border="0" cellpadding="0" cellspacing="0" width="795">
<!-- fwtable fwsrc="eprints_banner_final2.png" fwbase="ePrints_banner.gif" fwstyle="Dreamweaver" fwdocid = "1249563342" fwnested="0" -->
<tr>
<td><img src="/images/eprints/spacer.gif" width="32" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="104" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="44" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="105" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="41" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="16" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="82" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="69" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="98" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="12"><img name="ePrints_banner_r1_c1" src="/images/eprints/ePrints_banner_r1_c1.gif" width="795" height="10" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="10" border="0" alt="" /></td>
</tr>
<tr>
<td rowspan="6"><img name="ePrints_banner_r2_c1" src="/images/eprints/ePrints_banner_r2_c1.gif" width="32" height="118" border="0" alt="" /></td>
<td rowspan="5"><a href="http://www.utas.edu.au/"><img name="ePrints_banner_r2_c2" src="/images/eprints/ePrints_banner_r2_c2.gif" width="104" height="103" border="0" alt="" /></a></td>
<td colspan="10"><img name="ePrints_banner_r2_c3" src="/images/eprints/ePrints_banner_r2_c3.gif" width="659" height="41" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="41" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="3"><a href="http://eprints.utas.edu.au/"><img name="ePrints_banner_r3_c3" src="/images/eprints/ePrints_banner_r3_c3.gif" width="190" height="31" border="0" alt="" /></a></td>
<td rowspan="2" colspan="7"><img name="ePrints_banner_r3_c6" src="/images/eprints/ePrints_banner_r3_c6.gif" width="469" height="37" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="31" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="3"><img name="ePrints_banner_r4_c3" src="/images/eprints/ePrints_banner_r4_c3.gif" width="190" height="6" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="6" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="2"><img name="ePrints_banner_r5_c3" src="/images/eprints/ePrints_banner_r5_c3.gif" width="149" height="1" border="0" alt="" /></td>
<td rowspan="2" colspan="2"><a href="/information.html" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821132634_0,0,25,null,'ePrints_banner_r5_c5');MM_swapImage('ePrints_banner_r5_c5','','/images/eprints/ePrints_banner_r5_c5_f2.gif',1);"><img name="ePrints_banner_r5_c5" src="/images/eprints/ePrints_banner_r5_c5.gif" width="57" height="25" border="0" alt="About" /></a></td>
<td rowspan="2"><a href="/view/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133021_1,0,25,null,'ePrints_banner_r5_c7');MM_swapImage('ePrints_banner_r5_c7','','/images/eprints/ePrints_banner_r5_c7_f2.gif',1);"><img name="ePrints_banner_r5_c7" src="/images/eprints/ePrints_banner_r5_c7.gif" width="68" height="25" border="0" alt="Browse" /></a></td>
<td rowspan="2"><a href="/perl/search/simple" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133201_2,0,25,null,'ePrints_banner_r5_c8');MM_swapImage('ePrints_banner_r5_c8','','/images/eprints/ePrints_banner_r5_c8_f2.gif',1);"><img name="ePrints_banner_r5_c8" src="/images/eprints/ePrints_banner_r5_c8.gif" width="68" height="25" border="0" alt="Search" /></a></td>
<td rowspan="2"><a href="/perl/register" onMouseOut="MM_swapImgRestore();MM_startTimeout();" onMouseOver="MM_showMenu(window.mm_menu_1018171924_3,0,25,null,'ePrints_banner_r5_c9');MM_swapImage('ePrints_banner_r5_c9','','/images/eprints/ePrints_banner_r5_c9_f2.gif',1);"><img name="ePrints_banner_r5_c9" src="/images/eprints/ePrints_banner_r5_c9.gif" width="68" height="25" border="0" alt="register" /></a></td>
<td rowspan="2"><a href="/perl/users/home" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133422_4,0,25,null,'ePrints_banner_r5_c10');MM_swapImage('ePrints_banner_r5_c10','','/images/eprints/ePrints_banner_r5_c10_f2.gif',1);"><img name="ePrints_banner_r5_c10" src="/images/eprints/ePrints_banner_r5_c10.gif" width="82" height="25" border="0" alt="user area" /></a></td>
<td rowspan="2"><a href="/help/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133514_5,0,25,null,'ePrints_banner_r5_c11');MM_swapImage('ePrints_banner_r5_c11','','/images/eprints/ePrints_banner_r5_c11_f2.gif',1);"><img name="ePrints_banner_r5_c11" src="/images/eprints/ePrints_banner_r5_c11.gif" width="69" height="25" border="0" alt="Help" /></a></td>
<td rowspan="3" colspan="4"><img name="ePrints_banner_r5_c12" src="/images/eprints/ePrints_banner_r5_c12.gif" width="98" height="40" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td>
</tr>
<tr>
<td rowspan="2"><img name="ePrints_banner_r6_c3" src="/images/eprints/ePrints_banner_r6_c3.gif" width="44" height="39" border="0" alt="ePrints home" /></td>
<td><a href="/" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('ePrints_banner_r6_c4','','/images/eprints/ePrints_banner_r6_c4_f2.gif',1);"><img name="ePrints_banner_r6_c4" src="/images/eprints/ePrints_banner_r6_c4.gif" width="105" height="24" border="0" alt="ePrints home" /></a></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="24" border="0" alt="" /></td>
</tr>
<tr>
<td><img name="ePrints_banner_r7_c2" src="/images/eprints/ePrints_banner_r7_c2.gif" width="104" height="15" border="0" alt="" /></td>
<td colspan="8"><img name="ePrints_banner_r7_c4" src="/images/eprints/ePrints_banner_r7_c4.gif" width="517" height="15" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="15" border="0" alt="" /></td>
</tr>
</table></td>
</tr>
<tr><td><table width="100%" style="font-size: 90%; border: solid 1px #ccc; padding: 3px"><tr>
<td align="left"><a href="http://eprints.utas.edu.au/cgi/users/home">Login</a> | <a href="http://eprints.utas.edu.au/cgi/register">Create Account</a></td>
<td align="right" style="white-space: nowrap">
<form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/search" style="display:inline">
<input class="ep_tm_searchbarbox" size="20" type="text" name="q" />
<input class="ep_tm_searchbarbutton" value="Search" type="submit" name="_action_search" />
<input type="hidden" name="_order" value="bytitle" />
<input type="hidden" name="basic_srchtype" value="ALL" />
<input type="hidden" name="_satisfyall" value="ALL" />
</form>
</td>
</tr></table></td></tr>
<tr>
<td class="toplinks"><!-- InstanceBeginEditable name="content" -->
<div align="center">
<table width="720" class="ep_tm_main"><tr><td align="left">
<h1 class="ep_tm_pagetitle">Modelling and simulation of Paddy grain (Rice) drying in a simple pneumatic dryer</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Bunyawanichakul, Pracha</span> and <span class="person_name">Walker, Greg J.</span> and <span class="person_name">Sargison, Jane E.</span> and <span class="person_name">Doe, Peter E.</span> (2007) <xhtml:em>Modelling and simulation of Paddy grain (Rice) drying in a simple pneumatic dryer.</xhtml:em> Biosystems Engineering, 96 (3). pp. 335-344. ISSN 1537-5110</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2241/1/BioSystem_Paper.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2241/1/BioSystem_Paper.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />252Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2825" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1016/j.biosystemseng.2006.11.004">http://dx.doi.org/10.1016/j.biosystemseng.2006.11.004</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The paper describes paddy grain (rice) drying in a pneumatic conveyor where gas–particle heat and mass
transfer occur simultaneously with transporting and drying operations. A one-dimensional macroscopic
drying model of the overall bed incorporating mass and energy balances and drying kinetics of moisture
diffusion inside the paddy grain is developed. The set of coupled non-linear ordinary differential equations is
solved numerically to illustrate the evolution of moisture and temperature of the paddy grain and air stream
throughout the dryer length. The effect of specific airflow rate, which depends on dryer diameter, paddy feed
rate and inlet-air velocity on the final moisture content, and temperature of paddy grain and air stream is
studied. The feasibility of paddy drying in a pneumatic conveyor is evaluated using the developed model. This
device is found impractical for drying of hygroscopic material such as paddy grain because of the low solid
residence time for dryers of reasonable size.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The definitive version is available online at http://www.sciencedirect.com/</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Grain drying, heat and mass transfer, paddy drying</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/290501.html">290000 Engineering and Technology > 290500 Mechanical and Industrial Engineering > 290501 Mechanical Engineering</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2241</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Jane Sargison</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">22 Oct 2007 23:28</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2241;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2241">item control page</a></p>
</td></tr></table>
</div>
<!-- InstanceEndEditable --></td>
</tr>
<tr>
<td><!-- #BeginLibraryItem "/Library/footer_eprints.lbi" -->
<table width="795" border="0" align="left" cellpadding="0" class="footer">
<tr valign="top">
<td colspan="2"><div align="center"><a href="http://www.utas.edu.au">UTAS home</a> | <a href="http://www.utas.edu.au/library/">Library home</a> | <a href="/">ePrints home</a> | <a href="/contact.html">contact</a> | <a href="/information.html">about</a> | <a href="/view/">browse</a> | <a href="/perl/search/simple">search</a> | <a href="/perl/register">register</a> | <a href="/perl/users/home">user area</a> | <a href="/help/">help</a></div><br /></td>
</tr>
<tr><td colspan="2"><p><img src="/images/eprints/footerline.gif" width="100%" height="4" /></p></td></tr>
<tr valign="top">
<td width="68%" class="footer">Authorised by the University Librarian<br />
© University of Tasmania ABN 30 764 374 782<br />
<a href="http://www.utas.edu.au/cricos/">CRICOS Provider Code 00586B</a> | <a href="http://www.utas.edu.au/copyright/copyright_disclaimers.html">Copyright & Disclaimers</a> | <a href="http://www.utas.edu.au/accessibility/index.html">Accessibility</a> | <a href="http://eprints.utas.edu.au/feedback/">Site Feedback</a> </td>
<td width="32%"><div align="right">
<p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><img src="http://www.utas.edu.au/shared/logos/unioftasstrip.gif" alt="University of Tasmania Home Page" width="260" height="16" border="0" align="right" /></a></p>
<p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><br />
</a></p>
</div></td>
</tr>
<tr valign="top">
<td><p> </p></td>
<td><div align="right"><span class="NoPrint"><a href="http://www.eprints.org/software/"><img src="/images/eprintslogo.gif" alt="ePrints logo" width="77" height="29" border="0" align="bottom" /></a></span></div></td>
</tr>
</table>
<!-- #EndLibraryItem -->
<div align="center"></div></td>
</tr>
</table>
</body>
</html>
