<?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>1993-8012</journal-id>
<journal-title><![CDATA[Minería y Geología]]></journal-title>
<abbrev-journal-title><![CDATA[Min. Geol.]]></abbrev-journal-title>
<issn>1993-8012</issn>
<publisher>
<publisher-name><![CDATA[EDUM. Universidad de Moa]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1993-80122023000400235</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modificación de los criterios de flujo dominante en la evaluación térmica de aerocondensadores]]></article-title>
<article-title xml:lang="en"><![CDATA[Modification of the dominant flow criteria in the thermal evaluation of air-cooled condenser]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Camaraza-Medina]]></surname>
<given-names><![CDATA[Yanan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Blanco-García]]></surname>
<given-names><![CDATA[Yamilka]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Guanajuato  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Moa  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>39</volume>
<numero>4</numero>
<fpage>235</fpage>
<lpage>251</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1993-80122023000400235&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1993-80122023000400235&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1993-80122023000400235&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El proyecto actual de centrales eléctricas de biomasa en la industria azucarera de Cuba, tiene como limitante el acceso al agua requerida para condensación. Una posible solución sería el uso de aerocondensadores (ACC), sin embargo, su evaluación térmica es imprecisa puesto que los métodos disponibles son en extremo complejos y no caracterizan adecuadamente el coeficiente global de transferencia de calor (K), siendo requerido el uso de excesos de área de transferencia de calor, incrementando los costos iniciales. El objetivo fue desarrollar un modelo válido para cualquier zona de operación y régimen de flujo, que compute el coeficiente K con un menor índice de dispersión que las expresiones disponibles. Se mostró el estado actual del análisis térmico en un ACC y los métodos utilizados para cada zona de operación, sus características y limitantes. Se realizó un análisis diferencial y de correlación para obtener un modelo único, el cual es justo para las cuatro zonas de flujo dominante. En la validación se comprobó que la propuesta correlaciona con un error medio de ±22% en el 88,7 % de las muestras disponibles, reduciendo en una tercera parte la incertidumbre de los métodos actualmente utilizados. El estudio realizado muestra que el uso del criterio de flujo dominante permite reducir apreciablemente los índices de incertidumbre en la evaluación térmica del ACC, lo cual deriva en una mayor confiabilidad en el análisis ingenieril y evita el uso de excesos de áreas por baja confiabilidad de análisis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The current project of Biomass Power Plants in the sugar industry of Cuba, has as limitation the access to the water required for condensation. A possible solution would be the use of air-cooled condenser (ACC), however, the thermal assessment of a ACC is imprecise since the available methods are in extreme complex and do not characterize adequately the overall heat transfer coefficient (K), being required the use of excesses of heat transfer surface, which increments costs of the facilities. The objective was to develop a valid model for any zone of operation and regimen of flow that computes the coefficient K with a smaller index of dispersion than the available models.The current status of the thermal analysis in an ACC and the methods used for each zone of operation, characteristics and limitations are shown. A differential and correlation analysis to obtain a single model, which is just for the four zones of dominant flow, was made. In the validation it is verified that the proposed model correlates with an average error of ±22% in 88,7 % of available experimental data, reducing in a third part the errors of the current methods used. This work shows that the use of the dominant flow criteria enables reducing the indexes of uncertainty in the thermal evaluation of the ACC, which derive in a larger reliability in the assessment analysis and eludes the use of excesses of heat transfer surface due to a low reliability in the thermal analysis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[criterios de flujo]]></kwd>
<kwd lng="es"><![CDATA[condensación]]></kwd>
<kwd lng="es"><![CDATA[correlación]]></kwd>
<kwd lng="es"><![CDATA[transferencia de calor]]></kwd>
<kwd lng="en"><![CDATA[flow criteria]]></kwd>
<kwd lng="en"><![CDATA[condensation]]></kwd>
<kwd lng="en"><![CDATA[correlation]]></kwd>
<kwd lng="en"><![CDATA[heat transfer]]></kwd>
</kwd-group>
</article-meta>
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