<?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>0123-3033</journal-id>
<journal-title><![CDATA[Ingeniería y competitividad]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. compet.]]></abbrev-journal-title>
<issn>0123-3033</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería, Universidad del Valle]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-30332023000200002</article-id>
<article-id pub-id-type="doi">10.25100/iyc.v25i2.11663</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Model comparison and effect of flow and accessories on the pressure drop of the unit ff-df-270/el of Universidad de Cartagena]]></article-title>
<article-title xml:lang="es"><![CDATA[Comparación de modelos y efecto del caudal y presencia de accesorios sobre la caída de presión en la unidad ff-df-270/el de la Universidad de Cartagena]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villabona-Ortíz]]></surname>
<given-names><![CDATA[Angel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Delgado]]></surname>
<given-names><![CDATA[Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tejada-Tovar]]></surname>
<given-names><![CDATA[Candelaria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Cartagena Faculty of Engineering Chemical Engineering Department]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Cartagena Faculty of Engineering Chemical Engineering Department]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>25</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-30332023000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-30332023000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-30332023000200002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The effect of flow variation on the theoretical calculation of pressure drop in pipes with fittings in the unit FF-DF-270/EL of the Universidad de Cartagena was studied, determining the coefficient of minor losses (Kf) caused by 45° and 90° elbows, and three types of valves, using water as the process fluid. The flow rate (Q) was varied, using a valve, between 24, 20, 16, 12 L/min. Darcy's and Bernoulli's theorem methods were used to evaluate friction losses. Were found minimum error percentages of 0.04% and maximum 8.16%; loss coefficients adjusted by minimum squares were obtained with R2 of 0.999, comparing these Kf with the values reported in the plant manual and different authors. It was shown experimentally that the loss coefficient depends on each fitting, allowing the calculation of the theoretical pressure drop and comparing it with the experimental pressure drop, demonstrating that as the flow increases, an increase in pressure drop is generated. With the methodology applied in this research, the aim is to optimize pressure drop tests with fittings, and identify the characteristics of the pipe to obtain an optimum lower loss coefficient value.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se estudió el efecto de la variación del caudal sobre el cálculo teórico de la caída de presión en tuberías con accesorios en la unidad FF-DF-270/EL de la Universidad de Cartagena, determinando el coeficiente de pérdidas menores (Kf) causadas por codos de 45° y 90°, y tres tipos de válvulas, utilizando agua como fluido de proceso. Se varió el caudal (Q), utilizando una válvula, entre 24, 20, 16, 12 L/min. Las pérdidas por fricción de determinaron con Darcy y el Teorema de Bernoulli. Se encontraron porcentajes de error mínimo de 0.04% y máximo 8.16%; se obtuvieron coeficientes de pérdidas ajustados por mínimos cuadrados con R2 de 0.999, comparando estos Kf con los valores reportados en el manual de la planta y diferentes autores. Se demostró experimentalmente que el coeficiente de pérdida depende de cada accesorio, permitiendo calcular la caída de presión teórica y compararla con la caída de presión experimental, demostrando que al aumentar el caudal se generó un aumento en la caída de presión. Con la metodología aplicada en esta investigación se pretende optimizar ensayos de caída de presión con accesorios, e identificar las características de la tubería para obtener un valor de coeficiente de perdidas menores óptimo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Pressure drop]]></kwd>
<kwd lng="en"><![CDATA[Model comparison]]></kwd>
<kwd lng="en"><![CDATA[Loss coefficient]]></kwd>
<kwd lng="en"><![CDATA[Friction]]></kwd>
<kwd lng="es"><![CDATA[Caída de presión]]></kwd>
<kwd lng="es"><![CDATA[Comparación de modelos]]></kwd>
<kwd lng="es"><![CDATA[Coeficiente de pérdidas]]></kwd>
<kwd lng="es"><![CDATA[Fricción]]></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[Anaya-Durand]]></surname>
<given-names><![CDATA[AI]]></given-names>
</name>
<name>
<surname><![CDATA[Cauich-Segovia]]></surname>
<given-names><![CDATA[GI]]></given-names>
</name>
<name>
<surname><![CDATA[Funabazama-Bárcenas]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Alfonso]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de ecuaciones de factor de fricción explícito para tuberías]]></article-title>
<source><![CDATA[Educ Química]]></source>
<year>2014</year>
<volume>25</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>128-34</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[Tang]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Experimental study and modeling development of pressure drop in concurrent gas-liquid columns with a tridimensional rotational flow sieve tray]]></article-title>
<source><![CDATA[Chem Eng Sci]]></source>
<year>2018</year>
<volume>191</volume>
<page-range>383-97</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[Meti]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Sitaram]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of Optimum Pressure Loss Coefficient and Flow Distribution at Unsymmetrical Pipe Trifurcation Using Experimental and Numerical Technique]]></article-title>
<source><![CDATA[Appl Eng]]></source>
<year>2017</year>
<volume>1</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>41-7</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Romero-Chapa]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
</person-group>
<source><![CDATA[Pérdidas menores de energía en redes de tuberías de agua potable]]></source>
<year>2013</year>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A simple method for high-precision evaluation of valve flow coefficient by computational fluid dynamics simulation]]></article-title>
<source><![CDATA[Adv Mech Eng]]></source>
<year>2017</year>
<volume>9</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>1-7</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Yambombo Guanutaxi]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
</person-group>
<source><![CDATA[Diseño y construcción de un banco de pruebas para ensayos de pérdidas de carga en tuberías y accesorios]]></source>
<year>2012</year>
<publisher-name><![CDATA[Universidad Central del Ecuador]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[López-Cáceres]]></surname>
<given-names><![CDATA[LA]]></given-names>
</name>
<name>
<surname><![CDATA[Yepez-Shiguango]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
</person-group>
<source><![CDATA[Diseño e implementación de un laboratorio virtual para medir caída de presión y obtener datos en tiempo real usando LABVIEW y visual BASIC para mecánica de fluidos]]></source>
<year>2015</year>
<publisher-name><![CDATA[Escuela Superior Politécnica de Chimborazo]]></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[Cengel]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Cimbala]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Mecánica de Fluidos: Fundamentos y aplicaciones]]></source>
<year>2012</year>
<edition>2nd</edition>
<publisher-loc><![CDATA[México D.F ]]></publisher-loc>
<publisher-name><![CDATA[McGraw-Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mott]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<source><![CDATA[Mecanica de fluidos]]></source>
<year>2015</year>
<edition>7a</edition>
<publisher-loc><![CDATA[México D.F ]]></publisher-loc>
<publisher-name><![CDATA[Addison-Wesley]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Slatter]]></surname>
<given-names><![CDATA[PT]]></given-names>
</name>
<name>
<surname><![CDATA[Fester]]></surname>
<given-names><![CDATA[VG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fittings losses in paste flow design]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Jewell]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Fourie]]></surname>
<given-names><![CDATA[AB]]></given-names>
</name>
</person-group>
<source><![CDATA[Paste 2010: Proceedings of the Thirteenth International Seminar on Paste and Thickened Tailings]]></source>
<year>2010</year>
<page-range>303-10</page-range><publisher-loc><![CDATA[Perth ]]></publisher-loc>
<publisher-name><![CDATA[Australian Centre for Geomechanics]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fester]]></surname>
<given-names><![CDATA[VG]]></given-names>
</name>
<name>
<surname><![CDATA[Kabwe]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Slatter]]></surname>
<given-names><![CDATA[PT]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[2011, 'Diaphragm valve head loss coefficients for coarse particles transported in a non-Newtonian carrier fluid']]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Jewell]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Fourie]]></surname>
<given-names><![CDATA[AB]]></given-names>
</name>
</person-group>
<source><![CDATA[Paste 2011: Proceedings of the 14th International Seminar on Paste and Thickened Tailings]]></source>
<year>2011</year>
<page-range>417-26</page-range><publisher-loc><![CDATA[Perth ]]></publisher-loc>
<publisher-name><![CDATA[Australian Centre for Geomechanics]]></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[Flores]]></surname>
<given-names><![CDATA[JHN]]></given-names>
</name>
<name>
<surname><![CDATA[Rettore Neto]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Faria]]></surname>
<given-names><![CDATA[LC]]></given-names>
</name>
<name>
<surname><![CDATA[Timm]]></surname>
<given-names><![CDATA[LC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estimation of the kinetic head coefficient (k) based on the geometric characteristics of emitter pipes 1]]></article-title>
<source><![CDATA[J Brazilian Assoc Agric Eng]]></source>
<year>2017</year>
<volume>4430</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1091-102</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Russi Russi]]></surname>
<given-names><![CDATA[DI]]></given-names>
</name>
</person-group>
<source><![CDATA[Determinación experimental del coeficiente de pérdidas menores y el comportamiento hidráulico de diferentes válvulas tipo cheque usadas en sistemas internos de distribución de agua potable]]></source>
<year>2015</year>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Monterroso López]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<source><![CDATA[Coparación de pérdidas de presión entre válvulas comerciales de distinto material]]></source>
<year>2012</year>
<publisher-name><![CDATA[Universidad San Carlos de Guatemala]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bandala-Rocha]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de Coeficientes de Fricción en el Transporte de Fluidos No-Newtonianos]]></article-title>
<collab>Macedo y Ramírez RC.Vélez-Ruiz JF</collab>
<source><![CDATA[Inf tecnológica]]></source>
<year>2005</year>
<volume>16</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>73-80</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[Ganchozo Arévalo]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Monserrate Chamba]]></surname>
<given-names><![CDATA[HL]]></given-names>
</name>
</person-group>
<source><![CDATA[Diseño y construcción de una unidad didáctica de pérdidas de carga en el laboratorio de operaciones unitarias]]></source>
<year>2018</year>
<publisher-name><![CDATA[Universidad de Guayaquil]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[García Gutiérrez]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<source><![CDATA[Teoria De La Medicion De Caudales Y Volumenes De Agua E Instrumental Necesario Disponible En El Mercado. Medida y Evaluaciòn De las Extraciones De Agua Subterranea]]></source>
<year>2012</year>
<publisher-loc><![CDATA[Madrid, España ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="">
<collab>Rotorpump</collab>
<source><![CDATA[Rotorpump: Fricción en cañerías]]></source>
<year></year>
<page-range>1-2</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="">
<collab>Jurídica-SCIJ SC de I</collab>
<source><![CDATA[Sistema de agua fría y caliente]]></source>
<year></year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
