<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532022000200050</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v89n221.97965</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Dynamic modeling of the Energy Returned On Invested]]></article-title>
<article-title xml:lang="es"><![CDATA[Modelado dinámico de la Tasa de Retorno Energético]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Camargo]]></surname>
<given-names><![CDATA[Federico Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica Nacional, Concepción del Uruguay  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>89</volume>
<numero>221</numero>
<fpage>50</fpage>
<lpage>59</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532022000200050&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532022000200050&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532022000200050&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This work was developed to present a conceptual and preliminary analysis of the concepts and criteria for estimating the Energy Return On Investment (EROI). In this work, methods based on monetary studies, Life Cycle Analysis (LCA) were discussed and a dynamical systems modeling was proposed. In this respect, we made a mathematical development, defining the state and auxiliary variables and the adjustment parameters necessary to study the problem. Some criteria and influencing factors were defined, in the medium and long term, the sustainability of the energy system and seek to incorporate them into relevant areas of discussion and education, encouraging their dissemination and reviews. It is sought to discuss the issues and considerations for a standardized methodology that allows comparisons and decision-making, in order to minimize environmental impact.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este trabajo fue desarrollado para presentar un análisis conceptual y preliminar de los conceptos y criterios para estimar la Tasa de Retorno Energética (EROI). En este trabajo se discutieron métodos basados en estudios monetarios, Análisis de Ciclo de Vida (LCA) y se propuso un modelado de sistemas dinámicos. Al respecto, realizamos un desarrollo matemático, definiendo el estado y las variables auxiliares y los parámetros de ajuste necesarios para estudiar el problema. Se definieron algunos criterios y factores que inciden, en el mediano y largo plazo, en la sustentabilidad del sistema energético y buscan incorporarlos en áreas relevantes de discusión y educación, incentivando su difusión y revisión. Se busca discutir los temas y consideraciones para una metodología estandarizada que permita comparaciones y toma de decisiones, con el fin de minimizar el impacto ambiental.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[primary source of renewable generation]]></kwd>
<kwd lng="en"><![CDATA[life cycle analysis]]></kwd>
<kwd lng="en"><![CDATA[energy return on investment]]></kwd>
<kwd lng="es"><![CDATA[fuentes primarias de generación renovable]]></kwd>
<kwd lng="es"><![CDATA[análisis de ciclo de vida]]></kwd>
<kwd lng="es"><![CDATA[tasa de retorno energético]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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