<?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>2007-9753</journal-id>
<journal-title><![CDATA[RIIIT. Revista internacional de investigación e innovación tecnológica]]></journal-title>
<abbrev-journal-title><![CDATA[RIIIT. Rev. int. investig. innov. tecnol.]]></abbrev-journal-title>
<issn>2007-9753</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Coahuila]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-97532020000500002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diseño de una antorcha con serpentín para el calentamiento de agua en establos lecheros de la Comarca Lagunera, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Design of a torch with coil for water heating in dairy stables in the Lagunera Region, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Molina-Morejón]]></surname>
<given-names><![CDATA[V.M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Molina-Romeo]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinoza-Arellano]]></surname>
<given-names><![CDATA[J.J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Hernández]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Coahuila  ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Coahuila  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Equipos Inoxidables del Norte, ACV Group  ]]></institution>
<addr-line><![CDATA[Gómez Palacio Durango]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2020</year>
</pub-date>
<volume>8</volume>
<numero>46</numero>
<fpage>11</fpage>
<lpage>31</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-97532020000500002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-97532020000500002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-97532020000500002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La Comarca Lagunera, ubicada en el Norte-Centro de México, es la principal cuenca lechera del país en la cual se obtiene el 21 % de la producción nacional. En la región existen 90 biodigestores, de los cuales 10 emplean el biogás para producir electricidad y alrededor de 50 lo queman con un equipo denominado &#8220;Antorcha de Biogás&#8221; con capacidad para destruir el metano. En los establos lecheros de la región es común la utilización de resistencias eléctricas o bien gas licuado de petróleo (GLP) para calentar el agua utilizada en la sanitización, lo que genera un gasto anual cercano a los $300,000 (1.30 $/kWh) cuando el proceso podría ser más económico y sustentable con la utilización del biogás. El presente trabajo tuvo como objetivos diseñar y validar la innovación de agregar un serpentín a las antorchas, para que además de quemar el biogás, como lo hacen las antorchas actuales, se aproveche el calor para calentar el agua demandada en diversos procesos de los establos lecheros. La primera fase de la metodología consistió en realizar el cálculo del proceso de transferencia de calor, que ocurre dentro de la nueva antorcha, con el serpentín incorporado, a través del cual circula el agua que una vez caliente será utilizada en varios procesos dentro del establo. Se realizaron 30 corridas experimentales en las que se midieron los parámetros: temperatura del agua, tiempo, presión y flujo del biogás, así como los valores de CH4, CO2 y H2S. Los datos se analizaron estadísticamente (ANOVA de un factor) con lo que se demostró la consistencia del proceso de calentamiento del agua propuesto en este trabajo. Esta innovación puede ser utilizada en establos lecheros y granjas porcinas donde se produzca biogás y se requiera agua caliente para sus procesos y en unidades de producción que requieran calefacción en regiones con climas fríos o templados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The Lagunera Region, located in the North-Center of Mexico, is the main dairy basin of the country in which 21 % of the national production is obtained. In the region there are 90 biodigesters, of which 10 use biogas to produce electricity and about 50 burn it with equipment called &#8220;Biogas Torch&#8221; with the ability to destroy methane. In the dairy stables in the region, the use of electrical resistors or liquefied petroleum gas (LPG) is used to heat the water used in sanitation, which generates an annual expenditure close to $Mx 300,000 ($1.30/kWh), when the process could be more economical and sustainable with the use of biogas. The objectives of this work were to design and validate the innovation of adding a coil to the torches, so that in addition to burning the biogas, as current torches do, heat is used to heat the water demanded in various processes of the dairy stables. The first phase of the methodology consisted of performing the calculation of the heat transfer process, which occurs within the new torch, with the incorporated coil, through which the water circulates, which once hot, will be used in several processes within of the stable. 30 experimental runs were carried out in which the parameters were measured: water temperature, time, pressure and biogas flow, as well as the CH4, CO2 and H2S values. The collected data were analyzed statistically (ANOVA of one factor), which demonstrated the consistency of the water heating process proposed in this work. This innovation can be used in dairy stables and pig farms where biogas is produced and hot water is required for its processes and in production units that require heating in regions with cold or low temperate climates.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Agua caliente]]></kwd>
<kwd lng="es"><![CDATA[ANOVA]]></kwd>
<kwd lng="es"><![CDATA[biogás]]></kwd>
<kwd lng="es"><![CDATA[energía térmica]]></kwd>
<kwd lng="es"><![CDATA[serpentín]]></kwd>
<kwd lng="en"><![CDATA[Hot water]]></kwd>
<kwd lng="en"><![CDATA[ANOVA]]></kwd>
<kwd lng="en"><![CDATA[biogas]]></kwd>
<kwd lng="en"><![CDATA[thermal energy]]></kwd>
<kwd lng="en"><![CDATA[coil]]></kwd>
</kwd-group>
</article-meta>
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