<?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>2602-8492</journal-id>
<journal-title><![CDATA[Revista Técnica energía]]></journal-title>
<abbrev-journal-title><![CDATA[Revista Técnica energía]]></abbrev-journal-title>
<issn>2602-8492</issn>
<publisher>
<publisher-name><![CDATA[Operador Nacional de Electricidad CENACE]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2602-84922025000100039</article-id>
<article-id pub-id-type="doi">10.37116/revistaenergia.v21.n2.2025.691</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Wear - Sediment Quantity Correlation Model for Preventive Maintenance Scheduling of a Hydroelectric Power Plant]]></article-title>
<article-title xml:lang=""><![CDATA[Modelo de Correlación Desgaste - Cantidad de Sedimentos para la Programación de Mantenimiento Preventivo de una central Hidroeléctrica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zhanay]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leiva]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pilataxi]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quitiaquez]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="AaN">
<institution><![CDATA[,Universidad Politécnica Salesiana  ]]></institution>
<addr-line><![CDATA[Quito Ecuador]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="AaN">
<institution><![CDATA[,Universidad Politécnica Salesiana  ]]></institution>
<addr-line><![CDATA[Quito Ecuador]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="AaN">
<institution><![CDATA[,Universidad Politécnica Salesiana  ]]></institution>
<addr-line><![CDATA[Quito Ecuador]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="AaN">
<institution><![CDATA[,Universidad Politécnica Salesiana  ]]></institution>
<addr-line><![CDATA[Quito Ecuador]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2025</year>
</pub-date>
<volume>21</volume>
<numero>2</numero>
<fpage>39</fpage>
<lpage>47</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_arttext&amp;pid=S2602-84922025000100039&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_abstract&amp;pid=S2602-84922025000100039&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_pdf&amp;pid=S2602-84922025000100039&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La presente investigación se realiza para la mejora de la disponibilidad de una Central Hidroeléctrica a través de un modelo de correlación desgaste-cantidad de sedimentos para la programación de su mantenimiento preventivo, los datos se basan en la medición de espesores de los alabes, así como la inspección visual para identificar discontinuadas en los equipos hídricos, una vez que se han recopilado los datos, se pueden utilizar técnicas de análisis de datos para evaluar el estado de la turbina Francis y determinar la necesidad de mantenimiento preventivo bajo condición de trabajo. El análisis de datos que se detalla es el método de mínimos cuadrados donde las variables independientes que se consideran son potencia y partículas de suspensión con su unidad de medida nefelométricas de turbidez en partes por millón (PPM). Mediante el análisis mencionado se logra culminar los resultados con la proyección del desgaste a años posteriores a los datos obtenidos del punto de inspección, además que permite tomar medidas preventivas antes de que se produzca una falla, lo que ayuda a reducir el tiempo de inactividad y los costos de mantenimiento. Es así como la Central Hidroeléctrica en estudio tiene un promedio anual del 97.21 % de disponibilidad, se reduce por la suspensión de la generación eléctrica, debido al lavado del embalse y las paradas por mantenimiento programado. Mientras que, la confiabilidad promedio anual es el 99.89 %, se reduce por fallas no programadas. El resultado del modelo estadístico de correlación determino el mantenimiento preventivo por condiciones de mejora del 98 % de la disponibilidad en la Central Hidroeléctrica y se refleja en la disminución de días de no generación eléctrica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The present research is carried out for the improvement of the availability of a hydroelectric power plant through a wear-sediment quantity correlation model for the scheduling of its preventive maintenance, the data is based on the measurement of blade thicknesses, as well as visual inspection to identify discontinuities in the water equipment, once the data has been collected, data analysis techniques can be used to evaluate the condition of the Francis turbine and determine the need for preventive maintenance under working condition. The data analysis detailed is the least squares method where the independent variables considered are power and suspended particles with their nephelometric unit of measurement of turbidity in parts per million (PPM). By means of the aforementioned analysis, it is possible to complete the results with the projection of the wear to years after the data obtained from the inspection point, and it also allows taking preventive measures before a failure occurs, which helps to reduce downtime and maintenance costs. Thus, the hydroelectric power plant under study has an annual average availability of 97.21 %, reduced by the suspension of power generation due to reservoir flushing and scheduled maintenance shutdowns. While the annual average reliability is 99.89 %, it is reduced by unscheduled failures. The result of the correlation statistical model determined the preventive maintenance for improvement conditions of 98 % of the availability in the hydroelectric power plant and is reflected in the reduction of days of no electricity generation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Central Hidroeléctrica]]></kwd>
<kwd lng="es"><![CDATA[sedimentos]]></kwd>
<kwd lng="es"><![CDATA[turbina]]></kwd>
<kwd lng="es"><![CDATA[mantenimiento.]]></kwd>
<kwd lng="en"><![CDATA[Hydroelectric power plant]]></kwd>
<kwd lng="en"><![CDATA[sediments]]></kwd>
<kwd lng="en"><![CDATA[turbine]]></kwd>
<kwd lng="en"><![CDATA[maintenance.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[La generación distribuida y su regulación en el ecuador / The distributed generation and its regulation in ecuador]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pinargote]]></surname>
<given-names><![CDATA[D. F. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Sornoza]]></surname>
<given-names><![CDATA[G. J. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[A. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Gámez]]></surname>
<given-names><![CDATA[M. R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Brazilian J. Bus.]]></source>
<year>2021</year>
<volume>3</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>2018-31</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="">
<article-title xml:lang=""><![CDATA[DESGASTE DE MÁQUINAS HIDRÁULICAS EN LA GENERACIÓN HIDROELÉCTRICA]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Desarro. TECNOLÓGICO E INNOVACIÓN Empres]]></source>
<year>2016</year>
<volume>1</volume>
<page-range>17</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rojas]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Duque]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Garcia]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<source><![CDATA[Contexto Actual del Sector Hidroeléctrico Ecuatoriano: Análisis de Proyectos Emblemáticos]]></source>
<year>2016</year>
<page-range>1-6</page-range><publisher-name><![CDATA[Grup. Ing. Sísmica y Sismol]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Financial compensation in hydropower generation: a tool for social and environmental development]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fonseca]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Water Policy]]></source>
<year>2019</year>
<volume>21</volume>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Influence of Sedimentation on Hydroelectric Power Generation: Case Study of a Brazilian Reservoir]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Billia]]></surname>
<given-names><![CDATA[M. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Fábio]]></surname>
<given-names><![CDATA[M. F.]]></given-names>
</name>
</person-group>
<source><![CDATA[J. Energy Eng.]]></source>
<year>2015</year>
<month>-0</month>
<day>9</day>
<volume>141</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>4014016</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Evaluation on sediment erosion of Pelton turbine flow passage component]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[IOP Conf. Ser. Earth Environ. Sci]]></source>
<year>2019</year>
<volume>240</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>0-8</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="">
<article-title xml:lang=""><![CDATA[Modelación y simulación en CFD de una turbina Kaplan]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chavarro]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[]]></source>
<year>2018</year>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gutierrez]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Plan de mantenimiento basado en la metodología TPM para incrementar la productividad de los equipos línea amarilla en la empresa Renteq Maquinarias SAC]]></source>
<year>2020</year>
<publisher-name><![CDATA[Univ. Andin. del Cusco]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Analysis of spatial distribution of sediment pollutants accumulated in the vicinity of a small hydropower plant]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tomczyk]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Ga&#322;ka]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Wiatkowski]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Buta]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Gruss]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Energies]]></source>
<year>2021</year>
<volume>14</volume>
<numero>18</numero>
<issue>18</issue>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Hydro-abrasive erosion in hydro turbines: a review]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sangal]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Singhal]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Saini]]></surname>
<given-names><![CDATA[R. P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Int. J. Green Energy]]></source>
<year>2018</year>
<volume>15</volume>
<page-range>1-22</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The impact of a hydroelectric power plant on the sediment load in downstream water bodies, Svartisen, northern Norway]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bogen]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Bonsnes]]></surname>
<given-names><![CDATA[T. E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Sci. Total Environ.]]></source>
<year>2001</year>
<volume>266</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>273-80</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Effect of concentration and size of sediments on hydro-abrasive erosion of Pelton turbine]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rai]]></surname>
<given-names><![CDATA[A. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Staubli]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Renew. Energy]]></source>
<year>2020</year>
<volume>145</volume>
<page-range>893-902</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Research on synergistic erosion by cavitation and sediment: A review]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ultrason. Sonochem.]]></source>
<year>2023</year>
<volume>95</volume>
<page-range>106399</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[A Case Study: Sediment Erosion in Francis Turbines Operated at the San Francisco Hydropower Plant in Ecuador,]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cruzatty]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Energies]]></source>
<year>2021</year>
<volume>15</volume>
<page-range>8</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Sediment and Cavitation Erosion in Francis Turbines-Review of Latest Experimental and Numerical Techniques]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Noon]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[M. H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Energies]]></source>
<year>2021</year>
<volume>14</volume>
<page-range>1516</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Plan de control y aseguramiento de la calidad para la recuperación de un rodete de turbina Francis de una central hidroeléctrica]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Toapanta]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Rev. Técnica &#8220;Energía,&#8221;]]></source>
<year>2019</year>
<volume>15</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>57-65</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Siltation processes and metal sediment profiles in a hydroelectric power plant reservoir in the Paraíba do Sul river Basin, Southeastern Brazil]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vieira]]></surname>
<given-names><![CDATA[C. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Environ. Earth Sci.]]></source>
<year>2022</year>
<volume>81</volume>
<numero>22</numero>
<issue>22</issue>
<page-range>1-12</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[A review on silt erosion in hydro turbines]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Padhy]]></surname>
<given-names><![CDATA[M. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Saini]]></surname>
<given-names><![CDATA[R. P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Renew. Sustain. Energy Rev.]]></source>
<year>2008</year>
<volume>12</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>1974-87</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Measurement and analysis of sediment erosion of a high head Francis turbine: A field study of Bhilangana-III hydropower plant, India]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Gandhi]]></surname>
<given-names><![CDATA[B. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Pandey]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Eng. Fail. Anal.]]></source>
<year>2021</year>
<volume>122</volume>
<page-range>105249</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Effect of silt erosion on Francis turbine: a case study of Maneri Bhali Stage-II, Uttarakhand, India]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mandeep]]></surname>
<given-names><![CDATA[P. L. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Banerjee]]></surname>
<given-names><![CDATA[Singh J.]]></given-names>
</name>
<name>
<surname><![CDATA[Tiwari]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[ISH J. Hydraul. Eng.]]></source>
<year>2013</year>
<volume>19</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Transboundary sediment transfer from source to sink using a mineralogical analysis. Case study: Roseires Reservoir, Blue Nile, Sudan]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yasir]]></surname>
<given-names><![CDATA[A. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Paron]]></surname>
<given-names><![CDATA[S. A. Ali Paolo]]></given-names>
</name>
<name>
<surname><![CDATA[Mohamed]]></surname>
<given-names><![CDATA[Y. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Int. J. River Basin Manag.]]></source>
<year>2018</year>
<volume>16</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>477-91</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Integrated Spatial Distribution and Multivariate Statistical Analysis for Assessment of Ecotoxicological and Health Risks of Sediment Metal Contamination, Ömerli Dam (Istanbul, Turkey)]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cüce]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Kalipci]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ustao&#287;lu]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Dereli]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Türkmen]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Water, Air, Soil Pollut.]]></source>
<year>2022</year>
<volume>233</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>199</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Quitiaquez]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Estupinan-Campos]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Isaza-Roldan]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Nieto-Londono]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Quitiaquez]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Toapanta-Ramos]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Numerical simulation of a collector/evaporator for direct-expansion solar-assisted heat pump]]></source>
<year></year>
<conf-name><![CDATA[ 2020 Ieee Andescon, Andescon 2020]]></conf-name>
<conf-date>2020</conf-date>
<conf-loc> </conf-loc>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Sediment management at the water intake of hydropower plants]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Castro]]></surname>
<given-names><![CDATA[P. W.]]></given-names>
</name>
</person-group>
<source><![CDATA[Arab. J. Geosci.]]></source>
<year>2022</year>
<volume>15</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1118</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Revisión del estado del arte de sistemas DX-SAHP para la obtención de agua caliente sanitaria]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Quitiaquez]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Simbaña]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Isaza-Roldán]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Quitiaquez]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Nieto-Londoño]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Toapanta-Ramos]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Enfoque UTE]]></source>
<year>2020</year>
<volume>11</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>29-46</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Application of Minitab Statistical Software to Analysis of Students of the Faculty of Engineering , Analysis of Students the Faculty of Engineering , Thai-Nichi of of Technology Thai-Nichi]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Supithak]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Wongsuwan]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Vongsarnpigoon]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[J. Eng. Technol.]]></source>
<year>2016</year>
<volume>4</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>17-21</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
