{"id":43202,"date":"2019-10-08T12:19:03","date_gmt":"2019-10-08T11:19:03","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/"},"modified":"2020-02-06T11:14:09","modified_gmt":"2020-02-06T10:14:09","slug":"quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/","title":{"rendered":"Qu&#8217;est-ce que l&#8217;\u00e9bullition par convection naturelle &#8211; d\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e &#8211; d\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">\u00c9bullition par convection naturelle &#8211; D\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e.\u00a0La convection naturelle est \u00e0 \u00e9bullition lorsque \u0394Tsat &lt;5 \u00b0 C.\u00a0Le point A est g\u00e9n\u00e9ralement appel\u00e9 d\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e &#8211; ONB.<\/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>\u00c9bullition par convection naturelle &#8211; D\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e<\/h2>\n<p><strong>Cat\u00e9gorisation par la temp\u00e9rature de surchauffe des murs, \u0394T\u00a0<\/strong><strong><sub>sat<\/sub><\/strong><strong>\u00a0:<\/strong><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Boiling-Curve-Boiling-Modes.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-20779 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Boiling-Curve-Boiling-Modes-208x300.png\" alt=\"Courbe d'\u00e9bullition - Modes d'\u00e9bullition\" width=\"208\" height=\"300\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Boiling-Curve-Boiling-Modes-208x300.png\" \/><\/a>Le travail de pionnier en mati\u00e8re d&#8217;\u00e9bullition a \u00e9t\u00e9 effectu\u00e9 en 1934 par\u00a0\u00a0<strong>S. Nukiyama<\/strong>\u00a0, qui a utilis\u00e9 des fils de nichrome et de platine chauff\u00e9s \u00e9lectriquement immerg\u00e9s dans des liquides dans ses exp\u00e9riences.\u00a0Nukiyama fut le premier \u00e0 identifier\u00a0\u00a0<strong>diff\u00e9rents r\u00e9gimes de piscine en \u00e9bullition<\/strong>\u00a0\u00a0\u00e0\u00a0<strong>l&#8217;<\/strong>\u00a0aide de son appareil.\u00a0Il a\u00a0remarqu\u00e9 que l&#8217;\u00a0\u00e9bullition prend des formes diff\u00e9rentes, en\u00a0fonction de la valeur de la temp\u00e9rature de surchauffe de la\u00a0paroi\u00a0\u00a0<strong>AT\u00a0<\/strong><strong><sub>sat<\/sub><\/strong>\u00a0\u00a0(\u00e9galement connu comme l&#8217;exc\u00e8s de\u00a0temp\u00e9rature)\u00a0<strong>,\u00a0<\/strong>\u00a0qui est d\u00e9finie comme la diff\u00e9rence entre la temp\u00e9rature de paroi,\u00a0\u00a0<strong>T\u00a0<sub>paroi<\/sub><\/strong>\u00a0\u00a0et la temp\u00e9rature de saturation,\u00a0<strong>\u00a0T\u00a0<sub>sat<\/sub><\/strong>\u00a0.<\/p>\n<p>On observe quatre r\u00e9gimes diff\u00e9rents d\u2019\u00e9bullition en piscine (bas\u00e9s sur l\u2019exc\u00e8s de temp\u00e9rature):<\/p>\n<ul>\n<li><strong>Point d&#8217;\u00e9bullition par convection naturelle\u00a0<\/strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0<strong>\u0394T\u00a0<\/strong><strong><sub>sat<\/sub><\/strong>\u00a0\u00a0&lt;5 \u00b0 C<\/li>\n<li><strong>Nucl\u00e9ate en \u00e9bullition<\/strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a05 \u00b0 C &lt;\u00a0\u00a0<strong>\u0394T\u00a0<\/strong><strong><sub>sat<\/sub><\/strong>\u00a0\u00a0&lt;30 \u00b0 C<\/li>\n<li><strong>Transition d&#8217;\u00e9bullition<\/strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a030 \u00b0 C &lt;\u00a0\u00a0<strong>\u0394T\u00a0<\/strong><strong><sub>sat<\/sub><\/strong>\u00a0\u00a0&lt;200 \u00b0 C<\/li>\n<li><strong>Film en \u00e9bullition<\/strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 200 \u00b0 C &lt;\u00a0\u00a0<strong>\u0394T\u00a0<\/strong><strong><sub>sat<\/sub><\/strong><\/li>\n<\/ul>\n<h2>\u00c9bullition par convection naturelle<\/h2>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Natural-Convection-Boiling-Boiling-Modes.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-20781 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Natural-Convection-Boiling-Boiling-Modes-300x235.png\" alt=\"\u00c9bullition par convection naturelle\" width=\"300\" height=\"235\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Natural-Convection-Boiling-Boiling-Modes-300x235.png\" \/><\/a>En\u00a0\u00a0<a title=\"Thermodynamique\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/\">thermodynamique<\/a>\u00a0, la condition pour que\u00a0\u00a0les substances pures\u00a0soient\u00a0\u00a0<strong>bouillies<\/strong>\u00a0est que T\u00a0<sub>mur<\/sub>\u00a0\u00a0= T\u00a0<sub>sat<\/sub>\u00a0.\u00a0Mais dans les exp\u00e9riences r\u00e9elles, l&#8217;\u00e9bullition ne se produit pas tant que le liquide n&#8217;a pas chauff\u00e9 quelques degr\u00e9s au-dessus de la temp\u00e9rature de saturation.\u00a0La temp\u00e9rature de surface doit \u00eatre l\u00e9g\u00e8rement sup\u00e9rieure \u00e0 la temp\u00e9rature de saturation afin de maintenir la formation de vapeur.\u00a0Il y a \u00e9bullition par convection naturelle lorsque \u0394Tsat &lt;5 \u00b0 C.\u00a0Dans ce\u00a0\u00a0<strong>mode d&#8217;\u00e9bullition<\/strong>\u00a0, de la\u00a0\u00a0<strong>vapeur sera observ\u00e9e<\/strong>\u00a0\u00a0\u00e0 la surface de l&#8217;eau, mais g\u00e9n\u00e9ralement\u00a0\u00a0<strong>pas de bulles<\/strong>\u00a0sera observ\u00e9.\u00a0Au fur et \u00e0 mesure que la temp\u00e9rature de surchauffe augmente, la formation de bulles se produira \u00e9ventuellement, mais en dessous du point A, le mouvement du fluide est d\u00e9termin\u00e9 principalement par les courants de convection naturelle.\u00a0Le point A est g\u00e9n\u00e9ralement appel\u00e9\u00a0\u00a0<strong>d\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e &#8211; ONB<\/strong> .<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<h2><span>\u00c9bullition<\/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>Dans les chapitres pr\u00e9c\u00e9dents, nous avons discut\u00e9 du\u00a0<\/span><a title=\"Convection - Transfert de chaleur par convection\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-convection-transfert-de-chaleur-par-convection-definition\/\"><strong><span>transfert de chaleur par convection<\/span><\/strong><\/a><span>\u00a0avec une hypoth\u00e8se tr\u00e8s importante.\u00a0Nous avons suppos\u00e9 un\u00a0<\/span><strong><span>transfert de chaleur convectif monophas\u00e9<\/span><\/strong><span>\u00a0sans aucun changement de phase.\u00a0Dans ce chapitre, nous nous concentrons sur le transfert de chaleur par convection associ\u00e9 au\u00a0<\/span><strong><span>changement de phase d&#8217;un fluide<\/span><\/strong><span>\u00a0.\u00a0En particulier, nous consid\u00e9rons les processus qui peuvent se produire \u00e0 une interface solide-liquide ou solide-vapeur, \u00e0 savoir l&#8217;\u00a0<\/span><strong><span>\u00e9bullition<\/span><\/strong><span>\u00a0(changement de phase liquide-vapeur) et la\u00a0<\/span><strong><span>condensation<\/span><\/strong><span>\u00a0(\u00a0changement de phase\u00a0vapeur-liquide).<\/span><\/p>\n<p><span>Dans ces cas,\u00a0<\/span><strong><span>les effets de la chaleur latente<\/span><\/strong><span>\u00a0associ\u00e9s au changement de phase sont importants.\u00a0<\/span><strong><a title=\"Enthalpie de vaporisation\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/what-is-energy-physics\/what-is-enthalpy\/enthalpy-of-vaporization\/\"><span>La chaleur latente<\/span><\/a><span>\u00a0,<\/span><\/strong><span>\u00a0\u00e9galement connue sous le nom d&#8217;enthalpie de vaporisation, est la quantit\u00e9 de chaleur ajout\u00e9e ou retir\u00e9e d&#8217;une substance pour produire un changement de phase.\u00a0Cette \u00e9nergie d\u00e9compose les forces d&#8217;attraction intermol\u00e9culaires, et doit \u00e9galement fournir l&#8217;\u00e9nergie n\u00e9cessaire \u00e0 l&#8217;expansion du gaz (le\u00a0<\/span><strong><span>travail p\u0394V<\/span><\/strong><span>\u00a0).\u00a0Lorsque de\u00a0<\/span><strong><span>la chaleur latente<\/span><\/strong><span>\u00a0est ajout\u00e9e, aucun changement de temp\u00e9rature ne se produit.<\/span><\/p>\n<figure id=\"attachment_16677\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-16677\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Specific-Enthalpy-Water-and-Steam-min.png\"><img loading=\"lazy\" class=\"size-medium wp-image-16677 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Specific-Enthalpy-Water-and-Steam-min-242x300.png\" alt=\"Chaleur latente de vaporisation - eau \u00e0 0,1 MPa, 3 MPa, 16 MPa\" width=\"242\" height=\"300\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Specific-Enthalpy-Water-and-Steam-min-242x300.png\" \/><\/a><figcaption id=\"caption-attachment-16677\" class=\"wp-caption-text\"><span>La chaleur de vaporisation diminue avec l&#8217;augmentation de la pression, tandis que le point d&#8217;\u00e9bullition augmente.\u00a0Elle dispara\u00eet compl\u00e8tement \u00e0 un certain point appel\u00e9 le point critique.<\/span><\/figcaption><\/figure>\n<p><span>L&#8217;\u00a0<\/span><strong><span>enthalpie de vaporisation<\/span><\/strong><span>\u00a0est fonction de la pression \u00e0 laquelle cette transformation a lieu.<\/span><\/p>\n<p><span>Chaleur latente de vaporisation &#8211; eau \u00e0 0,1 MPa (pression atmosph\u00e9rique)<\/span><\/p>\n<p><strong><span>h\u00a0<\/span><\/strong><strong><sub><span>lg<\/span><\/sub><\/strong><strong><span>\u00a0= 2257 kJ \/ kg<\/span><\/strong><\/p>\n<p><span>Chaleur latente de vaporisation &#8211; eau \u00e0 3 MPa<\/span><\/p>\n<p><strong><span>h\u00a0<\/span><\/strong><strong><sub><span>lg<\/span><\/sub><\/strong><strong><span>\u00a0= 1795 kJ \/ kg<\/span><\/strong><\/p>\n<p><span>Chaleur latente de vaporisation &#8211; eau \u00e0 16 MPa (pression \u00e0 l&#8217;int\u00e9rieur d&#8217;un\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/pressurizer\/\"><span>pressuriseur<\/span><\/a><span>\u00a0)<\/span><\/p>\n<p><strong><span>h\u00a0<\/span><\/strong><strong><sub><span>lg<\/span><\/sub><\/strong><strong><span>\u00a0= 931 kJ \/ kg<\/span><\/strong><\/p>\n<p><span>La\u00a0<\/span><strong><span>chaleur de vaporisation<\/span><\/strong><span>\u00a0diminue avec l&#8217;augmentation de la pression, tandis que le\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-saturation-point-debullition-definition\/\"><span>point d&#8217;\u00e9bullition<\/span><\/a><span>\u00a0augmente.\u00a0Elle dispara\u00eet compl\u00e8tement \u00e0 un certain point appel\u00e9 le\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-of-water\/critical-point-of-water\/\"><span>point critique<\/span><\/a><span>\u00a0.\u00a0Au-dessus du point critique, les phases liquide et vapeur sont indiscernables et la substance est appel\u00e9e\u00a0<\/span><a 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><span>\u00a0.<\/span><\/p>\n<p><img loading=\"lazy\" class=\"alignright size-medium wp-image-16094 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Supercritical-phase-critical-point-min-300x256.png\" alt=\"supercritique-phase-critique-point-min\" width=\"300\" height=\"256\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Supercritical-phase-critical-point-min-300x256.png\" \/><span>Le passage du liquide \u00e0 l&#8217;\u00e9tat de vapeur d\u00fb \u00e0 l&#8217;\u00a0<\/span><strong><span>\u00e9bullition<\/span><\/strong><span>\u00a0est soutenu par le transfert de chaleur de la surface solide;\u00a0\u00e0 l&#8217;inverse, la\u00a0<\/span><strong><span>condensation<\/span><\/strong><span>\u00a0d&#8217;une vapeur \u00e0 l&#8217;\u00e9tat liquide entra\u00eene un transfert de chaleur vers la surface solide.\u00a0<\/span><strong><span>L&#8217;\u00e9bullition et la condensation<\/span><\/strong><span>\u00a0diff\u00e8rent des autres formes de convection en ce qu&#8217;elles d\u00e9pendent de la\u00a0<\/span><strong><span>chaleur latente de vaporisation<\/span><\/strong><span>\u00a0, qui est\u00a0<\/span><strong><span>tr\u00e8s \u00e9lev\u00e9e<\/span><\/strong><span>\u00a0pour les\u00a0<\/span><a title=\"Qu'est-ce que la pression - Physique\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-pressure-physics\/\"><span>pressions<\/span><\/a><span>\u00a0courantes\u00a0, donc de grandes quantit\u00e9s de chaleur peuvent \u00eatre transf\u00e9r\u00e9es pendant l&#8217;\u00e9bullition et la condensation essentiellement \u00e0 temp\u00e9rature constante.\u00a0<\/span><a title=\"Coefficient de transfert de chaleur par convection\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-quun-coefficient-de-transfert-de-chaleur-par-convection-definition\/\"><span>Les coefficients de transfert de chaleur<\/span><\/a><span>\u00a0, h, associ\u00e9s \u00e0 l&#8217;\u00a0<\/span><strong><span>\u00e9bullition et \u00e0 la condensation<\/span><\/strong><span>\u00a0sont g\u00e9n\u00e9ralement\u00a0<\/span><strong><span>beaucoup plus \u00e9lev\u00e9s<\/span><\/strong><span>que ceux rencontr\u00e9s dans d&#8217;autres formes de processus de convection qui impliquent une seule phase.<\/span><\/p>\n<p><span>Cela est d\u00fb au fait que, m\u00eame en\u00a0<\/span><a title=\"\u00c9coulement turbulent\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-quun-ecoulement-turbulent-definition\/\"><span>\u00e9coulement turbulent<\/span><\/a><span>\u00a0, il existe une couche de film fluide stagnant (sous-couche laminaire), qui isole la surface de l&#8217;\u00e9changeur de chaleur.\u00a0Cette\u00a0<\/span><strong><span>couche de film fluide stagnant<\/span><\/strong><span>\u00a0joue un r\u00f4le crucial pour le coefficient de transfert de chaleur convectif.\u00a0On observe que le fluide\u00a0<\/span><strong><span>s&#8217;arr\u00eate compl\u00e8tement \u00e0 la surface<\/span><\/strong><span>\u00a0et prend une vitesse nulle par rapport \u00e0 la surface.\u00a0Ce ph\u00e9nom\u00e8ne est connu sous le nom de condition antid\u00e9rapante et donc,\u00a0<\/span><strong><span>\u00e0 la surface,<\/span><\/strong><span>\u00a0le flux d&#8217;\u00e9nergie se produit\u00a0<\/span><strong><span>uniquement par conduction.\u00a0<\/span><\/strong><span>Mais dans les couches suivantes, il se produit \u00e0 la fois un mouvement de conduction et de diffusion-masse au niveau mol\u00e9culaire ou au niveau macroscopique.\u00a0En raison du mouvement de masse, le taux de transfert d&#8217;\u00e9nergie est plus \u00e9lev\u00e9.\u00a0Comme il a \u00e9t\u00e9 \u00e9crit,<\/span><strong><span>l&#8217;\u00e9bullition nucl\u00e9\u00e9e<\/span><\/strong><span>\u00a0\u00e0 la surface perturbe efficacement cette couche stagnante et, par cons\u00e9quent, l&#8217;\u00e9bullition nucl\u00e9\u00e9e augmente consid\u00e9rablement la capacit\u00e9 d&#8217;une surface \u00e0 transf\u00e9rer\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/what-is-energy-physics\/internal-energy-thermal-energy\/\"><span>de l&#8217;\u00e9nergie thermique<\/span><\/a><span>\u00a0au fluide en vrac.<\/span><\/p>\n<p>&nbsp;<\/p>\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 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<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u00c9bullition par convection naturelle &#8211; D\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e.\u00a0La convection naturelle est \u00e0 \u00e9bullition lorsque \u0394Tsat &lt;5 \u00b0 C.\u00a0Le point A est g\u00e9n\u00e9ralement appel\u00e9 d\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e &#8211; ONB. \u00c9bullition par convection naturelle &#8211; D\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e Cat\u00e9gorisation par la temp\u00e9rature de surchauffe des murs, \u0394T\u00a0sat\u00a0: Le travail de pionnier en mati\u00e8re d&#8217;\u00e9bullition &#8230; <a title=\"Qu&#8217;est-ce que l&#8217;\u00e9bullition par convection naturelle &#8211; d\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e &#8211; d\u00e9finition\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/\" aria-label=\"En savoir plus sur Qu&#8217;est-ce que l&#8217;\u00e9bullition par convection naturelle &#8211; d\u00e9but de l&#8217;\u00e9bullition nucl\u00e9\u00e9e &#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 l&#039;\u00e9bullition par convection naturelle - d\u00e9but de l&#039;\u00e9bullition nucl\u00e9\u00e9e - d\u00e9finition<\/title>\n<meta name=\"description\" content=\"\u00c9bullition par convection naturelle - D\u00e9but de l&#039;\u00e9bullition nucl\u00e9\u00e9e. La convection naturelle est \u00e0 \u00e9bullition lorsque \u0394Tsat &lt;5 \u00b0 C. Le point A est g\u00e9n\u00e9ralement appel\u00e9 d\u00e9but de l&#039;\u00e9bullition nucl\u00e9\u00e9e - ONB.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qu&#039;est-ce que l&#039;\u00e9bullition par convection naturelle - d\u00e9but de l&#039;\u00e9bullition nucl\u00e9\u00e9e - d\u00e9finition\" \/>\n<meta property=\"og:description\" content=\"\u00c9bullition par convection naturelle - D\u00e9but de l&#039;\u00e9bullition nucl\u00e9\u00e9e. La convection naturelle est \u00e0 \u00e9bullition lorsque \u0394Tsat &lt;5 \u00b0 C. Le point A est g\u00e9n\u00e9ralement appel\u00e9 d\u00e9but de l&#039;\u00e9bullition nucl\u00e9\u00e9e - ONB.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2019-10-08T11:19:03+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-02-06T10:14:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Boiling-Curve-Boiling-Modes-208x300.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\">\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\">\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture est.\">\n\t<meta name=\"twitter:data2\" content=\"4 minutes\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\",\"url\":\"https:\/\/www.thermal-engineering.org\/fr\/\",\"name\":\"Thermal Engineering\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/www.thermal-engineering.org\/fr\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/#primaryimage\",\"inLanguage\":\"fr-FR\",\"url\":\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Boiling-Curve-Boiling-Modes-208x300.png\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/\",\"name\":\"Qu'est-ce que l'\\u00e9bullition par convection naturelle - d\\u00e9but de l'\\u00e9bullition nucl\\u00e9\\u00e9e - d\\u00e9finition\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lebullition-par-convection-naturelle-debut-de-lebullition-nucleee-definition\/#primaryimage\"},\"datePublished\":\"2019-10-08T11:19:03+00:00\",\"dateModified\":\"2020-02-06T10:14:09+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"\\u00c9bullition par convection naturelle - D\\u00e9but de l'\\u00e9bullition nucl\\u00e9\\u00e9e. La convection naturelle est \\u00e0 \\u00e9bullition lorsque \\u0394Tsat &lt;5 \\u00b0 C. 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