<?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>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2023000300002</article-id>
<article-id pub-id-type="doi">10.31349/revmexfis.69.030601</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Stirnol Engine: A combination of Nitinol (shape memory alloy) and Gamma Stirling Engine]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arif]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Shah]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hussain Ratlamwala]]></surname>
<given-names><![CDATA[T. A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kamal]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ahmed]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,National University of Sciences and Technology Department of Industrial and Mechanical Engineering ]]></institution>
<addr-line><![CDATA[Karachi ]]></addr-line>
<country>Pakistan</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,NED University of Sciences and Technology Department of Industrial and Mechanical Engineering ]]></institution>
<addr-line><![CDATA[Karachi ]]></addr-line>
<country>Pakistan</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>69</volume>
<numero>3</numero>
<fpage>0</fpage>
<lpage>0</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2023000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2023000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2023000300002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Global pursuit to meet emergent energy demands necessitates finding simple and cost-effective solutions. A hopeful solution is the application of renewable energy with thermo-mechanical conversion systems such as Stirling engines. Considerable effort is in hand at industry and academia domains to stimulate the development of Stirling technology. Foregoing, this paper focuses on modelling of low temperature difference gamma-type Stirling engine and investigating means of enhancing its performance through integration of Nitinol spring. The CFD models were comprehensively studied, which helped build the foundation of theoretical concept of Stirnol engine. The results reveal that addition of Nitinol Spring enhances the overall efficiency of engine demonstrating affirmative impact of shape memory alloy towards performance output of Stirling engine.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Stirling engine]]></kwd>
<kwd lng="en"><![CDATA[Stirnol engine]]></kwd>
<kwd lng="en"><![CDATA[Nitinol]]></kwd>
<kwd lng="en"><![CDATA[Stirling cryocooler]]></kwd>
<kwd lng="en"><![CDATA[Austenitic/Martensitic finish temperatures]]></kwd>
<kwd lng="en"><![CDATA[Shape Memory Effect]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Walker]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Stirling engines]]></source>
<year>1980</year>
<publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Clarendon Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[U. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Review on solar Stirling engine: Development and performance]]></article-title>
<source><![CDATA[Thermal Science and Engineering Progress]]></source>
<year>2018</year>
<volume>8</volume>
<page-range>244-56</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[A. C.]]></given-names>
</name>
<name>
<surname><![CDATA[João]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Senhorinha]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Teixeira]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Nebra]]></surname>
<given-names><![CDATA[S. Azucena]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of the Stirling engine performance comparing two renewable energy sources: Solar energy and biomass]]></article-title>
<source><![CDATA[Renewable Energy]]></source>
<year>2020</year>
<volume>154</volume>
<page-range>581-597.4</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhu]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Liang]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Dai]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Luo]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review of Stirling-engine-based combined heat and power technology]]></article-title>
<source><![CDATA[Applied Energy]]></source>
<year>2021</year>
<volume>294</volume>
<page-range>116965</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arsdell]]></surname>
<given-names><![CDATA[B.H. Van]]></given-names>
</name>
</person-group>
<source><![CDATA[Around the world by Stirling engine: environmentally friendly Stirling engines, their applications worldwide and into space]]></source>
<year>2003</year>
<publisher-name><![CDATA[American Stirling Company]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Badea]]></surname>
<given-names><![CDATA[Nicolae]]></given-names>
</name>
</person-group>
<source><![CDATA[Design for micro-combined cooling, heating and power systems: Stirling engines and renewable power systems]]></source>
<year>2014</year>
<volume>10</volume>
<page-range>978-1</page-range><publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ghanem]]></surname>
<given-names><![CDATA[C. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Elio]]></surname>
<given-names><![CDATA[N. Gereige]]></given-names>
</name>
<name>
<surname><![CDATA[Bou Nader]]></surname>
<given-names><![CDATA[W. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Mansour Charbel]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Stirling system optimization for series hybrid electric vehicles. Proceedings of the Institution of Mechanical Engineers]]></article-title>
<source><![CDATA[Journal of Automobile Engineering]]></source>
<year>2021</year>
<page-range>09544070211018034</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hasanpour Omam]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Exhaust waste energy recovery using Otto-ATEG-Stirling engine combined cycle]]></article-title>
<source><![CDATA[Applied Thermal Engineering]]></source>
<year>2021</year>
<volume>183</volume>
<page-range>116210</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amin Abolghasemi]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Rana]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Stone]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Dadd]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bailey]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Liang]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Coaxial Stirling pulse tube cryocooler with active displacer]]></article-title>
<source><![CDATA[Cryogenics]]></source>
<year>2020</year>
<volume>111</volume>
<page-range>103143</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jani]]></surname>
<given-names><![CDATA[Jaronie Mohd]]></given-names>
</name>
<name>
<surname><![CDATA[Leary]]></surname>
<given-names><![CDATA[Martin]]></given-names>
</name>
<name>
<surname><![CDATA[Subic]]></surname>
<given-names><![CDATA[Aleksandar]]></given-names>
</name>
<name>
<surname><![CDATA[Gibson]]></surname>
<given-names><![CDATA[Mark A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review of shape memory alloy research, applications and opportunities]]></article-title>
<source><![CDATA[Materials &amp; Design]]></source>
<year>2014</year>
<volume>56</volume>
<page-range>1078-113</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mehrabi]]></surname>
<given-names><![CDATA[Reza]]></given-names>
</name>
<name>
<surname><![CDATA[Shirani]]></surname>
<given-names><![CDATA[Milad]]></given-names>
</name>
<name>
<surname><![CDATA[Kadkhodaei]]></surname>
<given-names><![CDATA[Mahmoud]]></given-names>
</name>
<name>
<surname><![CDATA[Elahinia]]></surname>
<given-names><![CDATA[Mohammad]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Constitutive modelling of cyclic behaviour in shape memory alloys]]></article-title>
<source><![CDATA[International Journal of Mechanical Sciences]]></source>
<year>2015</year>
<volume>103</volume>
<page-range>181-8</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Benafan]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Calkins]]></surname>
<given-names><![CDATA[F.T.]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Stebner]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Turner]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Vaidyanathan]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Webster]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Young]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Shape memory alloy actuator design: CASMART collaborative best practices in Smart Materials]]></article-title>
<source><![CDATA[Adaptive Structures and Intelligent Systems]]></source>
<year>2011</year>
<volume>54716</volume>
<page-range>493-503</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[C&#259;t&#259;lina]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Grosu]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Costea]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Constantin]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Beta type Stirling engine. Schmidt and finite physical dimensions thermodynamics methods faced to experiments]]></article-title>
<source><![CDATA[Entropy]]></source>
<year>2020</year>
<volume>22</volume>
<page-range>1278</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gaponenko]]></surname>
<given-names><![CDATA[A. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Kagramanova]]></surname>
<given-names><![CDATA[A. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Analysis of the Stirling engine in the Schmidt approximation]]></article-title>
<source><![CDATA[Journal of Physics: Conference Series]]></source>
<year>2018</year>
<volume>1111</volume>
<page-range>012019</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Maheswaran]]></surname>
<given-names><![CDATA[K. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ideal thermodynamic analysis of Stirling engine using Schmidt analysis]]></article-title>
<source><![CDATA[Advances in Natural and Applied Sciences]]></source>
<year>2016</year>
<volume>10</volume>
<page-range>227-33</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[N. C. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Griffin]]></surname>
<given-names><![CDATA[F. P.]]></given-names>
</name>
</person-group>
<source><![CDATA[A review of Stirling engine mathematical models]]></source>
<year>1983</year>
<publisher-name><![CDATA[Oak Ridge National Laboratory. US Department of Energy]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shahryar]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Tavakolpour-Saleh]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Omidvar]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[From Beale number to pole placement design of a free piston Stirling engine]]></article-title>
<source><![CDATA[Archive of Mechanical Engineering]]></source>
<year>2017</year>
<volume>64</volume>
<page-range>499-518</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Senft]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ringbom Stirling Engines]]></source>
<year>1993</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Oxford University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kongtragool]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Wongwises]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Renewable &amp; Sustainable Energy Reviews]]></source>
<year>2005</year>
<volume>30</volume>
<page-range>465-76</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
