<?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>2223-4861</journal-id>
<journal-title><![CDATA[Centro Azúcar]]></journal-title>
<abbrev-journal-title><![CDATA[cen. az.]]></abbrev-journal-title>
<issn>2223-4861</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2223-48612021000100071</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[ANÁLISIS EMERGÉTICO DE LA PRODUCCIÓN DE ELECTRICIDAD EN UNA TERMOELÉCTRICA CUBANA]]></article-title>
<article-title xml:lang="en"><![CDATA[ELECTRICITY PRODUCTION IN A CUBAN POWER PLANT EMERGY ANALYSIS]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés López]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Capote Trujillo]]></surname>
<given-names><![CDATA[Yoan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Cienfuegos Centro de Estudios de Energía y Medio Ambiente (CEEMA) ]]></institution>
<addr-line><![CDATA[ Cienfuegos]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Cienfuegos Facultad de Ingeniería Departamento de Química]]></institution>
<addr-line><![CDATA[ Cienfuegos]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>48</volume>
<numero>1</numero>
<fpage>71</fpage>
<lpage>80</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612021000100071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612021000100071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612021000100071&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: En la actualidad han surgido importantes herramientas para la cuantificación de los potenciales impactos ambientales de los procesos, productos y servicios. Entre estos la emergía, un concepto basado en la termodinámica, los principios teóricos de la ecología y la energética de sistemas, ha ganado popularidad ya que permite, entre otras cosas evaluar la relevancia del trabajo humano y los servicios bajo un marco común.  Objetivo: El objetivo de esta investigación consiste en evaluar el potencial impacto ambiental de la producción de electricidad en Cuba tomando como caso de estudio la Central Termoeléctrica de Cienfuegos, Carlos Manuel de Céspedes.  Materiales y Métodos: Para ello se llevó a cabo un análisis emergético que requirió un análisis documental para la identificación de las unidades de valor emergético de los principales flujos que determinan la dinámica del sistema analizado.  Resultados y Discusión: La transformidad estimada para la electricidad es 7,9925 E+05 seJ/J que se corresponde con el orden para sistemas similares. La razón de eficiencia emergética indica una alta dependencia del sistema de los recursos no renovables e importados de la economía constituyendo el combustible más del 90 % del flujo emergético consumido. La razón de carga ambiental revela un elevado impacto sobre el medio ambiente por lo que el índice de sostenibilidad emergética muestra que el sistema no es sostenible a largo plazo.  Conclusiones: Esto evidencia la necesidad de explotar otras formas de generación a partir de fuentes renovables de energía siendo atractiva en el contexto cubano la biomasa.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Nowadays have emerged important tools to quantify the potential environmental impacts of processes, products and services. Among them emergy, a concept based in thermodynamics, the theoretical principles of ecology and system energetics, have gained popularity due to it allows among other things to assess the relevance of human work and services in the same framework.  Objective: The objective of this investigation is to assess the potential environmental impact of the electricity production in Cuba taking as a case of study the Carlos Manuel de Céspedes Power Plant located in Cienfuegos.  Materials and Methods: To do this an emergy analysis was carried out which required an analysis of documents to identified the unit emergy values of the main flows that control the dynamics of the system analyzed.  Results and Discussion: The transformity estimated for electricity is 7.9925 E+05 seJ/J which is in the range for similar systems The emergy yield ratio (EYR) shows a high dependence from the system of non-renewable and imported resources from economy being the fuel over 90 % of the emergy flow consumed. The environmental loading ratio (ELR) reveals a high impact to the environment which is the reason why the emergy sustainability index (ESI) indicates the unsustainability of the system in the long run.  Conclusions: This shows the necessity to exploit other forms of generation based in renewable sources being the biomass attractive due to Cuban perspective.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[análisis emergético]]></kwd>
<kwd lng="es"><![CDATA[generación de electricidad]]></kwd>
<kwd lng="en"><![CDATA[emergy analysis]]></kwd>
<kwd lng="en"><![CDATA[electricity generation.]]></kwd>
</kwd-group>
</article-meta>
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