<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1692-3324</journal-id>
<journal-title><![CDATA[Revista Ingenierías Universidad de Medellín]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. ing. univ. Medellín]]></abbrev-journal-title>
<issn>1692-3324</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Medellín]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1692-33242019000200149</article-id>
<article-id pub-id-type="doi">10.22395/rium.v18n35a9</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio del efecto de la geometría de un secador solar típico para café con CFD]]></article-title>
<article-title xml:lang="en"><![CDATA[Study of the Effect of the Geometry of a Typical Solar Dryer for Coffee Using CFD]]></article-title>
<article-title xml:lang="pt"><![CDATA[Estudo do efeito da geometria de um secador solar típico para café com CFD]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vélez-Piedrahita]]></surname>
<given-names><![CDATA[Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ciro-Velásquez]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Osorio-Saráz]]></surname>
<given-names><![CDATA[Jairo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Largo-Ávila]]></surname>
<given-names><![CDATA[Esteban]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Politécnico Colombiano Jaime Isaza Cadavid  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad del Valle  ]]></institution>
<addr-line><![CDATA[Caicedonia ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>18</volume>
<numero>35</numero>
<fpage>149</fpage>
<lpage>161</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1692-33242019000200149&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1692-33242019000200149&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1692-33242019000200149&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de la presente fue modelar el comportamiento térmico de un secador solar típico para café tomando en consideración algunas configuraciones geométricas en la apertura de ventanas, en pos de mejorar las condiciones de secado natural al interior de la estructura. El modelo se simuló con datos experimentales en un secador solar típico en Colombia con Ansys CFX®. Los resultados mostraron que la geometría con una apertura del 25 % en la ventana para la salida del aire aumentó la temperatura sobre la capa de café hasta 4,2 °C con respecto a la temperatura ambiente, lo cual garantiza uniformidad en el secado, mientras la geometría típica con una apertura del 100 % aumentó la temperatura hasta 3,6 °C, no obstante, con ambas aperturas se aumentó la humedad relativa sobre la capa de café hasta 0,7 % con respecto a la humedad relativa ambiental. Con la apertura máxima de las ventanas disminuyó la humedad relativa del aire.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of the present investigation was to computationally model a typical solar dryer for coffee, considering some alternative geometric configurations in the opening of windows to improve the thermal conditions within the drying structure which enable the water removal process of wet parchment coffee. The model was simulated in Ansys CFX® software. Simulation results showed that the geometry with an opening of 25 % in the air output window increased temperature in the coffee layer to 4.2 °C over room temperature, guaranteeing uniform drying, whereas the typical geometry with a 100 % opening increased temperature to 3.8 °C. When the maximum window opening for input and output of air was used, the relative humidity of air within the dryer decreased in comparison with the other geometries.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo O objetivo do presente trabalho foi modelar o comportamento térmico de um secador solar típico para café ao levar em consideração algumas configurações geométricas na abertura de janelas, a fim de melhorar as condições de secagem natural no interior da estrutura. O modelo foi simulado com dados experimentais em um secador solar típico na Colômbia com Ansys CFX®. Os resultados mostraram que a geometria com uma abertura de 25 % na janela para saída do ar aumentou a temperatura sobre a camada de café até 4,2 °C com respeito à temperatura ambiente, o que garante uniformidade na secagem, ao passo que a geometria típica com uma abertura de 100 % aumentou a temperatura até 3,6 °C, não obstante, com ambas as aberturas houve um aumento da umidade relativa sobre a camada de café de até 0,7 % em comparação com a umidade relativa ambiental. Com a abertura máxima das janelas a umidade relativa do ar diminuiu.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[agroindustria]]></kwd>
<kwd lng="es"><![CDATA[dinámica de fluido computacional]]></kwd>
<kwd lng="es"><![CDATA[simulación]]></kwd>
<kwd lng="es"><![CDATA[energía]]></kwd>
<kwd lng="es"><![CDATA[temperatura]]></kwd>
<kwd lng="es"><![CDATA[radiación]]></kwd>
<kwd lng="es"><![CDATA[secador solar]]></kwd>
<kwd lng="en"><![CDATA[agroindustry]]></kwd>
<kwd lng="en"><![CDATA[computational fluid dynamics]]></kwd>
<kwd lng="en"><![CDATA[simulation]]></kwd>
<kwd lng="en"><![CDATA[energy]]></kwd>
<kwd lng="en"><![CDATA[temperature]]></kwd>
<kwd lng="en"><![CDATA[radiation]]></kwd>
<kwd lng="en"><![CDATA[solar dryer]]></kwd>
<kwd lng="pt"><![CDATA[agroindústria]]></kwd>
<kwd lng="pt"><![CDATA[fluidodinâmica computacional]]></kwd>
<kwd lng="pt"><![CDATA[simulação]]></kwd>
<kwd lng="pt"><![CDATA[energia]]></kwd>
<kwd lng="pt"><![CDATA[temperatura]]></kwd>
<kwd lng="pt"><![CDATA[radiação]]></kwd>
<kwd lng="pt"><![CDATA[secador solar]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>[1]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Soediono]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Beneficio del café II: secado del cafe pergamino]]></article-title>
<source><![CDATA[J. Chem. Inf. Model]]></source>
<year>1989</year>
<volume>53</volume>
<page-range>160</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>[2]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[A. G]]></given-names>
</name>
<name>
<surname><![CDATA[Maia]]></surname>
<given-names><![CDATA[C. B]]></given-names>
</name>
<name>
<surname><![CDATA[Cortez]]></surname>
<given-names><![CDATA[M. F. B]]></given-names>
</name>
<name>
<surname><![CDATA[Valle]]></surname>
<given-names><![CDATA[R. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Technical feasibility assessment of a solar chimney for food drying]]></article-title>
<source><![CDATA[Sol. Energy]]></source>
<year>2008</year>
<volume>82</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>198-205</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>[3]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brasil]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Cabezas]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Morais]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveira Martins]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Simulation of the airflow inside a hybrid dryer]]></article-title>
<source><![CDATA[Arpapress]]></source>
<year>2012</year>
<volume>10</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>382-9</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>[4]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amanlou]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Zomorodian]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Applying CFD for designing a new fruit cabinet dryer]]></article-title>
<source><![CDATA[J. Food Eng]]></source>
<year>2010</year>
<volume>101</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>8-15</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>[5]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alvarez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Santamaria]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dinámica de fluidos computacional aplicada al estudio de regeneradores térmicos]]></article-title>
<source><![CDATA[Dyna]]></source>
<year>2004</year>
<volume>71</volume>
<page-range>81-93</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>[6]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nilnont]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Thepa]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Janjai]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Kasayapanand]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Thamrongmas]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Bala]]></surname>
<given-names><![CDATA[B. K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Finite element simulation for coffee (Coffea arabica) drying]]></article-title>
<source><![CDATA[Food Bioprod. Process]]></source>
<year>2012</year>
<volume>90</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>341-50</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>[7]</label><nlm-citation citation-type="book">
<collab>Ideam</collab>
<source><![CDATA[Clima]]></source>
<year></year>
<publisher-name><![CDATA[Ideam]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<label>[8]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Campbell Scientific]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<source><![CDATA[CR1000 Measurement and Control System]]></source>
<year>2015</year>
<page-range>1-678</page-range><publisher-loc><![CDATA[Logan, Utah ]]></publisher-loc>
<publisher-name><![CDATA[Campbell Scientific]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<label>[9]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jurado-Chaná]]></surname>
<given-names><![CDATA[J. M]]></given-names>
</name>
<name>
<surname><![CDATA[Montoya-Restrepo]]></surname>
<given-names><![CDATA[E. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveros-Tascón]]></surname>
<given-names><![CDATA[C. E]]></given-names>
</name>
<name>
<surname><![CDATA[García-Alzate]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Método para medir el contenido de humedad del café pergamino en el secado solar del café]]></source>
<year>2009</year>
<volume>60</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>135-47</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>[10]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Osorio]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Olivera]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Barreto]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Norton]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[a Cfd Based Approach for Determination of Ammonia Concentration Profile and Flux From Poultry Houses With Natural Ventilation]]></article-title>
<source><![CDATA[Rev. Fac. Nac. Agron]]></source>
<year>2016</year>
<volume>69</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>7825-34</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>[11]</label><nlm-citation citation-type="book">
<collab>Ansys</collab>
<source><![CDATA[Ansys CFX-Solver Theory Guide]]></source>
<year>2013</year>
<publisher-loc><![CDATA[Canonsburg, Pensilvania ]]></publisher-loc>
<publisher-name><![CDATA[Ansys]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>[12]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alvarenga]]></surname>
<given-names><![CDATA[C. B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of the water vapor pressure deficit in the air on hydropneumatic spraying of artificial targets]]></article-title>
<source><![CDATA[Biosci. J]]></source>
<year>2014</year>
<volume>30</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>182-93</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>[13]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Verboven]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Datta]]></surname>
<given-names><![CDATA[A. K]]></given-names>
</name>
<name>
<surname><![CDATA[Anh]]></surname>
<given-names><![CDATA[N. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Scheerlinck]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[M. Nicolai]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Computation of airflow effects on heat and mass transfer in a microwave oven]]></article-title>
<source><![CDATA[J. Food Eng.]]></source>
<year>2003</year>
<volume>59</volume>
<numero>2-3</numero>
<issue>2-3</issue>
<page-range>181-90</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>[14]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Besora]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Informe Técnico para la Construcción de un Secador Solar de Café]]></article-title>
<source><![CDATA[Ing. Sin Front]]></source>
<year>2016</year>
</nlm-citation>
</ref>
<ref id="B15">
<label>[15]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Janjai]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Intawee]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Kaewkiew]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Sritus]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Khamvongsa]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A large-scale solar greenhouse dryer using polycarbonate cover: Modeling and testing in a tropical environment of Lao People's Democratic Republic]]></article-title>
<source><![CDATA[Renew. Energy]]></source>
<year>2011</year>
<volume>36</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>1053-62</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>[16]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Henao]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Evaluación del proceso de secado del café y su relación con las propiedades físicas, composición química y calidad en taza]]></source>
<year>2016</year>
<publisher-loc><![CDATA[Medellín ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
