{"id":45999,"date":"2019-10-20T16:04:58","date_gmt":"2019-10-20T15:04:58","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quest-ce-que-la-pression-critique-de-leau-definition\/"},"modified":"2019-10-20T16:04:58","modified_gmt":"2019-10-20T15:04:58","slug":"quest-ce-que-la-pression-critique-de-leau-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-pression-critique-de-leau-definition\/","title":{"rendered":"Qu&#8217;est-ce que la pression critique de l&#8217;eau &#8211; D\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\"><span>\u00c0 une pression sup\u00e9rieure \u00e0 la pression critique de l&#8217;eau, celle-ci est dans un \u00e9tat sp\u00e9cial, appel\u00e9 \u00e9tat fluide supercritique.\u00a0La pression critique est Pcr = 22,09 MPa.\u00a0G\u00e9nie thermique<\/span><\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>Pression critique de l&#8217;eau<\/span><\/h2>\n<figure id=\"attachment_14172\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-14172\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Boiling-point-of-water.png\"><img loading=\"lazy\" class=\"size-medium wp-image-14172 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Boiling-point-of-water-300x255.png\" alt=\"Diagramme de phase de l'eau\" width=\"300\" height=\"255\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Boiling-point-of-water-300x255.png\" \/><\/a><figcaption id=\"caption-attachment-14172\" class=\"wp-caption-text\"><span>Diagramme de phase de l&#8217;eau.<\/span><br \/>\n<span>Source: wikipedia.org CC BY-SA<\/span><\/figcaption><\/figure>\n<p><span>\u00c0 une pression\u00a0\u00a0<\/span><strong><span>sup\u00e9rieure \u00e0 la pression critique, l&#8217;\u00a0\u00a0<\/span><\/strong>\u00a0<a title=\"Propri\u00e9t\u00e9s de l'eau\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-of-water\/\"><span>eau<\/span><\/a><span>\u00a0est dans un \u00e9tat sp\u00e9cial, appel\u00e9\u00a0<\/span><a title=\"Fluide supercritique - Eau supercritique\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-steam-what-is-steam\/supercritical-fluid-supercritical-water\/\"><strong><span>\u00e9tat de fluide supercritique<\/span><\/strong><\/a><span>\u00a0.\u00a0Un fluide supercritique est un fluide soumis \u00e0 des pressions sup\u00e9rieures \u00e0 ses valeurs critiques thermodynamiques.\u00a0Aux pressions critiques et supercritiques, un fluide est consid\u00e9r\u00e9 comme une\u00a0<\/span><strong><span>substance monophas\u00e9e<\/span><\/strong><span>\u00a0malgr\u00e9 le fait que toutes les propri\u00e9t\u00e9s thermophysiques subissent\u00a0<\/span><strong><span>des changements importants<\/span><\/strong><span>\u00a0dans les r\u00e9gions critiques et pseudocritiques.<\/span><\/p>\n<p><span>Pour l&#8217;eau, les param\u00e8tres critiques sont les suivants:<\/span><\/p>\n<ul>\n<li><strong><span>P\u00a0<\/span><sub><span>cr<\/span><\/sub><span>\u00a0= 22,09 MPa<\/span><\/strong><\/li>\n<li><strong><span>T\u00a0<\/span><sub><span>cr<\/span><\/sub><span>\u00a0= 374,14 \u00b0 C (ou 647,3 K)<\/span><\/strong><\/li>\n<li><strong><span>v\u00a0<\/span><sub><span>cr<\/span><\/sub><span>\u00a0= 0.003155 m3 \/ kg<\/span><\/strong><\/li>\n<li><strong><span>u\u00a0<\/span><sub><span>f<\/span><\/sub><span>\u00a0= u\u00a0<\/span><sub><span>g<\/span><\/sub><span>\u00a0= 2014 kJ \/ kg<\/span><\/strong><\/li>\n<li><strong><span>h\u00a0<\/span><sub><span>f<\/span><\/sub><span>\u00a0= h\u00a0<\/span><sub><span>g<\/span><\/sub><span>\u00a0= 2084 kJ \/ kg<\/span><\/strong><\/li>\n<li><strong><span>s\u00a0<\/span><sub><span>f<\/span><\/sub><span>\u00a0= s\u00a0<\/span><sub><span>g<\/span><\/sub><span>\u00a0= 4,406 kJ \/ kg K<\/span><\/strong><\/li>\n<\/ul>\n<p><span>Voir aussi:\u00a0<\/span><a title=\"Point critique de l'eau\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-of-water\/critical-point-of-water\/\"><span>Point critique de l&#8217;eau<\/span><\/a><\/p>\n<p><span>Voir aussi:\u00a0<\/span><a title=\"Fluide supercritique - Eau supercritique\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-steam-what-is-steam\/supercritical-fluid-supercritical-water\/\"><span>Fluide supercritique<\/span><\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\"><\/div>\n<div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\">\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Cet article est bas\u00e9 sur la traduction automatique de l&#8217;article original en anglais. Pour plus d&#8217;informations, voir l&#8217;article en anglais. Pouvez vous nous aider Si vous souhaitez corriger la traduction, envoyez-la \u00e0 l&#8217;adresse: translations@nuclear-power.com ou remplissez le formulaire de traduction en ligne. Nous appr\u00e9cions votre aide, nous mettrons \u00e0 jour la traduction le plus rapidement possible. Merci<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u00c0 une pression sup\u00e9rieure \u00e0 la pression critique de l&#8217;eau, celle-ci est dans un \u00e9tat sp\u00e9cial, appel\u00e9 \u00e9tat fluide supercritique.\u00a0La pression critique est Pcr = 22,09 MPa.\u00a0G\u00e9nie thermique Pression critique de l&#8217;eau Diagramme de phase de l&#8217;eau. Source: wikipedia.org CC BY-SA \u00c0 une pression\u00a0\u00a0sup\u00e9rieure \u00e0 la pression critique, l&#8217;\u00a0\u00a0\u00a0eau\u00a0est dans un \u00e9tat sp\u00e9cial, appel\u00e9\u00a0\u00e9tat de &#8230; <a title=\"Qu&#8217;est-ce que la pression critique de l&#8217;eau &#8211; D\u00e9finition\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-pression-critique-de-leau-definition\/\" aria-label=\"En savoir plus sur Qu&#8217;est-ce que la pression critique de l&#8217;eau &#8211; D\u00e9finition\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce que la pression critique de l&#039;eau - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"\u00c0 une pression sup\u00e9rieure \u00e0 la pression critique de l&#039;eau, celle-ci est dans un \u00e9tat sp\u00e9cial, appel\u00e9 \u00e9tat fluide supercritique. 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