<?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>1815-5901</journal-id>
<journal-title><![CDATA[Ingeniería Energética]]></journal-title>
<abbrev-journal-title><![CDATA[Energética]]></abbrev-journal-title>
<issn>1815-5901</issn>
<publisher>
<publisher-name><![CDATA[Universidad Tecnológica de La Habana José Antonio Echeverría, Cujae]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59012019000300234</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Sanitary hot water production from heat recovery in hotel buildings in Cuba]]></article-title>
<article-title xml:lang="es"><![CDATA[Producción de agua caliente sanitaria a partir de recuperación de calor en hoteles de Cuba]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdivia Nodal]]></surname>
<given-names><![CDATA[Yarelis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez Guerra]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez Sarduy]]></surname>
<given-names><![CDATA[Julio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hens]]></surname>
<given-names><![CDATA[Luc]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vandecasteele name]]></surname>
<given-names><![CDATA[Carlo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Cienfuegos  ]]></institution>
<addr-line><![CDATA[ Cienfuegos]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Flemish Institute for Technological Research  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Belgium</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of Leuven Department of Chemical Engineering ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Belgium</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>40</volume>
<numero>3</numero>
<fpage>234</fpage>
<lpage>244</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59012019000300234&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59012019000300234&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59012019000300234&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In tropical countries Heating, Ventilation and Air Conditioning (HVAC) systems are commonly used in tourism facilities to maintain comfort, but with considerable electricity consumption. Much attention had been paid to improving efficiency and saving energy in the thermal systems of hotels, e.g. air conditioning and sanitary hot water (SHW). This work is about energy modeling of a conventional vapor compression system with condensation heat recovery for sanitary hot water production in Cuba. The model estimates the total amount of heat rejected in the condenser from measurable external variables, such as: electric power, ambient temperature and chilled water temperature. The system is evaluated under partial load conditions during winter, when temperatures are low and therefore the demand for cooling is less, while hot water is used for rooms or kitchen services. The results show that the model is valid for actual operating conditions working below its nominal capacity.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En países tropicales, los sistemas de Acondicionamiento de Aire, Calor y Ventilación (HVAC) por sus siglas en inglés, son comúnmente usados en instalaciones turísticas para mantener el confort, pero con un considerable consumo de electricidad. Se ha prestado mucha atención al mejoramiento de la eficiencia y al ahorro de energía en los sistemas térmicos empleados en hoteles, por ejemplo: sistemas de acondicionamiento de aire y agua caliente sanitaria (ACS). Este trabajo trata sobre la modelación energética de un sistema convencional de compresión de vapor con recuperación de calor de condensación para la producción de agua caliente sanitaria en Cuba. El modelo estima la cantidad de calor total rechazado en el condensador, a partir de variables externas medibles, como: potencia eléctrica, temperatura ambiente y temperatura de agua helada. El sistema es evaluado bajo condiciones de operación a carga parcial durante invierno, cuando las temperaturas con bajas y por tanto la demanda de enfriamiento es menor; mientras el agua caliente es usada para habitaciones y servicios de cocina. Los resultados muestran que el modelo es válido para las condiciones reales de operación por debajo de su capacidad nominal.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[chiller]]></kwd>
<kwd lng="en"><![CDATA[heat recovery]]></kwd>
<kwd lng="en"><![CDATA[hotels]]></kwd>
<kwd lng="en"><![CDATA[sanitary hot water]]></kwd>
<kwd lng="en"><![CDATA[thermodynamic modeling]]></kwd>
<kwd lng="es"><![CDATA[agua caliente sanitaria]]></kwd>
<kwd lng="es"><![CDATA[enfriadoras]]></kwd>
<kwd lng="es"><![CDATA[hoteles]]></kwd>
<kwd lng="es"><![CDATA[modelación termodinámica]]></kwd>
<kwd lng="es"><![CDATA[recuperación de calor]]></kwd>
</kwd-group>
</article-meta>
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