{"id":46784,"date":"2019-11-01T09:23:02","date_gmt":"2019-11-01T08:23:02","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quest-ce-que-laltitude-chef-definition\/"},"modified":"2020-03-03T08:10:30","modified_gmt":"2020-03-03T07:10:30","slug":"quest-ce-que-laltitude-chef-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-laltitude-chef-definition\/","title":{"rendered":"Qu&#8217;est-ce que l&#8217;altitude Chef &#8211; D\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Potentiel d&#8217;\u00e9l\u00e9vation &#8211; Hauteur d&#8217;\u00e9l\u00e9vation: La hauteur d&#8217;\u00e9l\u00e9vation repr\u00e9sente l&#8217;\u00e9nergie potentielle d&#8217;un fluide en raison de son \u00e9l\u00e9vation au-dessus d&#8217;un niveau de r\u00e9f\u00e9rence. G\u00e9nie thermique<\/div>\n<\/div>\n<div><br data-mce-bogus=\"1\"><\/div>\n<div><br data-mce-bogus=\"1\"><\/div>\n<div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-60 lgc-tablet-grid-60 lgc-mobile-grid-100 lgc-equal-heights  lgc-first\">\n<div class=\"inside-grid-column\">\n<h2><span style=\"\">T\u00eate d&#8217;\u00e9l\u00e9vation<\/span><\/h2>\n<p><span style=\"\">En g\u00e9n\u00e9ral,&nbsp;&nbsp;<\/span><strong><span style=\"\">la t\u00eate hydraulique<\/span><\/strong><span style=\"\">&nbsp;, ou t\u00eate totale, est une mesure du&nbsp;<\/span><strong><span style=\"\">potentiel<\/span><\/strong><span style=\"\">&nbsp;du fluide au point de mesure.&nbsp;Il peut \u00eatre utilis\u00e9 pour d\u00e9terminer un gradient hydraulique entre deux points ou plus.<\/span><br \/><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Bernoulli-Theorem-Equation.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Bernoulli-Theorem-Equation.png\"><img loading=\"lazy\" class=\"size-full wp-image-14235 aligncenter lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Bernoulli-Theorem-Equation.png\" alt=\"Th\u00e9or\u00e8me de Bernoulli - \u00c9quation\" width=\"346\" height=\"66\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Bernoulli-Theorem-Equation.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Bernoulli-Theorem-Equation.png\"><\/a><\/p>\n<p><strong><span style=\"\">En dynamique des fluides<\/span><\/strong><span style=\"\">&nbsp;, la t\u00eate est un concept qui relie l&#8217;\u00e9nergie dans un fluide incompressible \u00e0 la&nbsp;<\/span><strong><span style=\"\">hauteur d&#8217;une colonne statique \u00e9quivalente<\/span><\/strong><span style=\"\">&nbsp;de ce fluide.&nbsp;Les unit\u00e9s pour toutes les diff\u00e9rentes formes d&#8217;\u00e9nergie dans l&#8217;&nbsp;<\/span><a title=\"\u00c9quation de Bernoulli - Principe de Bernoulli\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quelle-est-lequation-de-bernoulli-principe-de-bernoulli-definition\/\" data-mce-href=\"https:\/\/www.thermal-engineering.org\/fr\/quelle-est-lequation-de-bernoulli-principe-de-bernoulli-definition\/\"><span style=\"\">\u00e9quation de Bernoulli<\/span><\/a><span style=\"\">&nbsp;peuvent \u00e9galement \u00eatre mesur\u00e9es en&nbsp;<\/span><strong><span style=\"\">unit\u00e9s de distance<\/span><\/strong><span style=\"\">&nbsp;, et donc ces termes sont parfois appel\u00e9s \u00abt\u00eates\u00bb (t\u00eate de pression, t\u00eate de vitesse et t\u00eate d&#8217;\u00e9l\u00e9vation).&nbsp;La t\u00eate est \u00e9galement d\u00e9finie pour les pompes.&nbsp;Cette t\u00eate est g\u00e9n\u00e9ralement appel\u00e9e&nbsp;<\/span><strong><span style=\"\">t\u00eate statique<\/span><\/strong><span style=\"\">&nbsp;et repr\u00e9sente la&nbsp;<\/span><strong><span style=\"\">hauteur<\/span><\/strong><span style=\"\">&nbsp;(pression)&nbsp;<strong>maximale<\/strong>&nbsp;qu&#8217;elle peut fournir.&nbsp;Par cons\u00e9quent, les caract\u00e9ristiques de toutes les pompes peuvent g\u00e9n\u00e9ralement \u00eatre lues \u00e0 partir de sa&nbsp;<\/span><strong><span style=\"\">courbe QH<\/span><\/strong><span style=\"\">&nbsp;(d\u00e9bit &#8211; hauteur).<\/span><\/p>\n<p><span style=\"\">Il existe quatre types de potentiel (t\u00eate):<\/span><\/p>\n<ul>\n<li><strong><span style=\"\">Potentiel de pression &#8211; T\u00eate de pression:<\/span><\/strong><span style=\"\">&nbsp;La t\u00eate de pression repr\u00e9sente l&#8217;\u00e9nergie d&#8217;\u00e9coulement d&#8217;une colonne de fluide dont le poids est \u00e9quivalent \u00e0 la pression du fluide.<\/span><strong><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Pressure-Head.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Pressure-Head.png\"><img loading=\"lazy\" class=\"aligncenter size-medium wp-image-14309 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Pressure-Head-300x62.png\" alt=\"T\u00eate de pression\" width=\"300\" height=\"62\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Pressure-Head-300x62.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Pressure-Head-300x62.png\"><\/a><\/strong><span style=\"\">\u03c1&nbsp;<\/span><sub><span style=\"\">w<\/span><\/sub><span style=\"\">&nbsp;: densit\u00e9 de l&#8217;eau suppos\u00e9e ind\u00e9pendante de la pression<\/span><\/li>\n<li><strong><span style=\"\">Potentiel d&#8217;\u00e9l\u00e9vation &#8211; T\u00eate d&#8217;\u00e9l\u00e9vation:<\/span><\/strong><span style=\"\">&nbsp;La t\u00eate d&#8217;\u00e9l\u00e9vation repr\u00e9sente l&#8217;\u00e9nergie potentielle d&#8217;un fluide en raison de son \u00e9l\u00e9vation au-dessus d&#8217;un niveau de r\u00e9f\u00e9rence.<\/span><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Elevation-Head.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Elevation-Head.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14308 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Elevation-Head.png\" alt=\"T\u00eate d'\u00e9l\u00e9vation\" width=\"296\" height=\"80\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Elevation-Head.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Elevation-Head.png\"><\/a><\/li>\n<li><strong><span style=\"\">Potentiel cin\u00e9tique &#8211; T\u00eate cin\u00e9tique:<\/span><\/strong><span style=\"\">&nbsp;La t\u00eate cin\u00e9tique repr\u00e9sente l&#8217;\u00e9nergie cin\u00e9tique du fluide.&nbsp;C&#8217;est la hauteur en pieds qu&#8217;un fluide s&#8217;\u00e9coulant augmenterait dans une colonne si toute son \u00e9nergie cin\u00e9tique \u00e9tait convertie en \u00e9nergie potentielle.<\/span><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Kinetic-Head.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Kinetic-Head.png\"><img loading=\"lazy\" class=\"aligncenter size-medium wp-image-14307 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Kinetic-Head-300x47.png\" alt=\"T\u00eate cin\u00e9tique\" width=\"300\" height=\"47\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Kinetic-Head-300x47.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Kinetic-Head-300x47.png\"><\/a><\/li>\n<\/ul>\n<p><span style=\"\">La somme de la t\u00eate d&#8217;\u00e9l\u00e9vation, de la t\u00eate cin\u00e9tique et de la t\u00eate de pression d&#8217;un fluide est appel\u00e9e la&nbsp;<\/span><strong><span style=\"\">t\u00eate totale<\/span><\/strong><span style=\"\">&nbsp;.&nbsp;Ainsi, l&#8217;\u00e9quation de Bernoulli indique que la hauteur totale du fluide est constante.<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Total-Hydraulic-Head.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Total-Hydraulic-Head.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14311 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Total-Hydraulic-Head.png\" alt=\"T\u00eate hydraulique totale\" width=\"606\" height=\"370\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Total-Hydraulic-Head.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Total-Hydraulic-Head.png\"><\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-40 lgc-tablet-grid-40 lgc-mobile-grid-100 lgc-equal-heights  lgc-last\">\n<div class=\"inside-grid-column\">\n<figure id=\"attachment_14299\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-14299\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Q-H.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Q-H.png\"><img loading=\"lazy\" class=\"size-medium wp-image-14299 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Q-H-300x207.png\" alt=\"Diagramme caract\u00e9ristique QH de la pompe centrifuge et de la canalisation\" width=\"300\" height=\"207\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Q-H-300x207.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Q-H-300x207.png\"><\/a><figcaption id=\"caption-attachment-14299\" class=\"wp-caption-text\"><span style=\"\">Diagramme caract\u00e9ristique QH de la pompe centrifuge et de la canalisation<\/span><\/figcaption><\/figure>\n<figure id=\"attachment_14303\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-14303\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Total-Head-Line-min.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Total-Head-Line-min.png\"><img loading=\"lazy\" class=\"size-medium wp-image-14303 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Total-Head-Line-min-300x229.png\" alt=\"T\u00eate hydraulique - Ligne de t\u00eate totale\" width=\"300\" height=\"229\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Total-Head-Line-min-300x229.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Total-Head-Line-min-300x229.png\"><\/a><figcaption id=\"caption-attachment-14303\" class=\"wp-caption-text\"><span style=\"\">Le pi\u00e9zom\u00e8tre se nivelle lorsque le fluide coule.&nbsp;Sur cette figure, les niveaux ont diminu\u00e9 d&#8217;une quantit\u00e9 \u00e9gale \u00e0 la t\u00eate de vitesse.<\/span><\/figcaption><\/figure>\n<figure id=\"attachment_14304\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-14304\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Velocity-Head-min.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Velocity-Head-min.png\"><img loading=\"lazy\" class=\"size-medium wp-image-14304 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Velocity-Head-min-300x229.png\" alt=\"T\u00eate hydraulique - T\u00eate de vitesse\" width=\"300\" height=\"229\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Velocity-Head-min-300x229.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Velocity-Head-min-300x229.png\"><\/a><figcaption id=\"caption-attachment-14304\" class=\"wp-caption-text\"><span style=\"\">Niveaux pi\u00e9zom\u00e9triques et t\u00eates de vitesse avec fluide s&#8217;\u00e9coulant dans des tuyaux de diam\u00e8tre variable.&nbsp;La t\u00eate de vitesse \u00e0 chaque point est maintenant diff\u00e9rente.&nbsp;En effet, la vitesse est diff\u00e9rente en chaque point.<\/span><\/figcaption><\/figure>\n<figure id=\"attachment_14305\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-14305\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Hydraulic-Grade-Line-min.png\" data-mce-href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Hydraulic-Grade-Line-min.png\"><img loading=\"lazy\" class=\"size-medium wp-image-14305 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Hydraulic-Grade-Line-min-300x230.png\" alt=\"T\u00eate hydraulique - Ligne de qualit\u00e9 hydraulique\" width=\"300\" height=\"230\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Hydraulic-Grade-Line-min-300x230.png\" data-mce-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Hydraulic-Head-Hydraulic-Grade-Line-min-300x230.png\"><\/a><figcaption id=\"caption-attachment-14305\" class=\"wp-caption-text\"><span style=\"\">Ligne de qualit\u00e9 hydraulique et lignes de t\u00eate totales pour un tuyau de diam\u00e8tre constant avec friction.&nbsp;Dans une conduite r\u00e9elle, il y a des pertes d&#8217;\u00e9nergie dues au frottement &#8211; celles-ci doivent \u00eatre prises en compte car elles peuvent \u00eatre tr\u00e8s importantes.<\/span><\/figcaption><\/figure>\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\">&nbsp;<\/p>\n<div class=\"su-accordion\">\n<div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus su-spoiler-closed\">\n<div class=\"su-spoiler-content su-clearfix\">\n<p>Prenons un tuyau contenant un fluide id\u00e9al. Si ce tuyau subit une expansion graduelle de diam\u00e8tre, l&#8217; <a title=\"\u00c9quation de continuit\u00e9\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lequation-de-continuite-definition\/\" data-mce-href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lequation-de-continuite-definition\/\"><strong>\u00e9quation de continuit\u00e9<\/strong><\/a>&nbsp;nous dit que lorsque le&nbsp;<strong>diam\u00e8tre<\/strong>&nbsp;du&nbsp;<strong>tuyau augmente<\/strong>&nbsp;, la&nbsp;<strong>vitesse d&#8217;\u00e9coulement doit diminuer<\/strong>&nbsp;afin de maintenir le m\u00eame d\u00e9bit massique.&nbsp;La vitesse de sortie \u00e9tant inf\u00e9rieure \u00e0 la vitesse d&#8217;entr\u00e9e, la hauteur cin\u00e9tique du flux doit diminuer de l&#8217;entr\u00e9e \u00e0 la sortie.&nbsp;S&#8217;il n&#8217;y a pas de changement de hauteur d&#8217;\u00e9l\u00e9vation (le tuyau est horizontal), la diminution de la hauteur cin\u00e9tique doit \u00eatre compens\u00e9e par une augmentation de la hauteur de pression.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div><br data-mce-bogus=\"1\"><\/div>\n<div><br data-mce-bogus=\"1\"><\/div>\n<div>\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","protected":false},"excerpt":{"rendered":"<p>Potentiel d&#8217;\u00e9l\u00e9vation &#8211; Hauteur d&#8217;\u00e9l\u00e9vation: La hauteur d&#8217;\u00e9l\u00e9vation repr\u00e9sente l&#8217;\u00e9nergie potentielle d&#8217;un fluide en raison de son \u00e9l\u00e9vation au-dessus d&#8217;un niveau de r\u00e9f\u00e9rence. G\u00e9nie thermique T\u00eate d&#8217;\u00e9l\u00e9vation En g\u00e9n\u00e9ral,&nbsp;&nbsp;la t\u00eate hydraulique&nbsp;, ou t\u00eate totale, est une mesure du&nbsp;potentiel&nbsp;du fluide au point de mesure.&nbsp;Il peut \u00eatre utilis\u00e9 pour d\u00e9terminer un gradient hydraulique entre deux points ou &#8230; <a title=\"Qu&#8217;est-ce que l&#8217;altitude Chef &#8211; D\u00e9finition\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-laltitude-chef-definition\/\" aria-label=\"En savoir plus sur Qu&#8217;est-ce que l&#8217;altitude Chef &#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;altitude Chef - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"Potentiel d&#039;\u00e9l\u00e9vation - Hauteur d&#039;\u00e9l\u00e9vation: La hauteur d&#039;\u00e9l\u00e9vation repr\u00e9sente l&#039;\u00e9nergie potentielle d&#039;un fluide en raison de son \u00e9l\u00e9vation au-dessus d&#039;un niveau de r\u00e9f\u00e9rence. 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