{"id":9409,"date":"2017-11-09T12:30:38","date_gmt":"2017-11-09T11:30:38","guid":{"rendered":"http:\/\/greth.fr\/?p=9409"},"modified":"2023-02-23T16:47:16","modified_gmt":"2023-02-23T15:47:16","slug":"etude-experimentale-de-cycles-de-pompe-a-chaleur-utilisant-des-melanges-a-base-de-co2","status":"publish","type":"post","link":"https:\/\/greth.fr\/en\/etude-experimentale-de-cycles-de-pompe-a-chaleur-utilisant-des-melanges-a-base-de-co2\/","title":{"rendered":"\u00c9tude exp\u00e9rimentale de cycles de pompe \u00e0 chaleur utilisant des m\u00e9langes \u00e0 base de CO2"},"content":{"rendered":"<p><strong><span style=\"text-decoration: underline;\">Summary :<\/span><\/strong><\/p>\n<p style=\"text-align: justify;\">Cette \u00e9tude consiste en l\u2019exp\u00e9rimentation de m\u00e9langes de fluides frigorig\u00e8nes \u00e0 base de CO2 dans les applications de pompes \u00e0 chaleur domestiques. L\u2019objectif est l\u2019obtention de performances sup\u00e9rieures \u00e0 une pompe \u00e0 chaleur au CO2 double-service (eau chaude sanitaire et chauffage). L\u2019ajout d\u2019autres compos\u00e9s au CO2 d\u00e9place le point critique et de fa\u00e7on plus g\u00e9n\u00e9rale modifie les lignes d\u2019\u00e9quilibre de phases. On peut alors s\u2019attendre \u00e0 la r\u00e9duction des pressions de fonctionnement et \u00e0 une augmentation du rendement \u00e9nerg\u00e9tique du cycle thermodynamique. Une pompe \u00e0 chaleur mono-\u00e9tag\u00e9e au CO2 est utilis\u00e9e comme r\u00e9f\u00e9rence, et les conditions de temp\u00e9rature externes \u00e0 la boucle thermodynamique sont invariantes. Deux sc\u00e9narii sont consid\u00e9r\u00e9s : La production d\u2019eau chaude sanitaire (ECS), o\u00f9 l\u2019eau est chauff\u00e9e de 10 \u00b0C \u00e0 65 \u00b0C ; la production d\u2019eau de chauffage (CH) o\u00f9 l\u2019au est chauff\u00e9e de 30 \u00b0C \u00e0 35 \u00b0C. Dans les deux cas, l\u2019eau glycol\u00e9e en l\u2019entr\u00e9e de l\u2019\u00e9vaporateur est r\u00e9gul\u00e9e \u00e0 7 \u00b0C. Afin de pouvoir analyser le comportement des cycles thermodynamiques avec m\u00e9langes, il est essentiel de connaitre la composition du fluide frigorig\u00e8ne en circulation. Pour ce faire, nous avons mis au point une technique de mesure statistique et non-intrusive de la composition: Des cellules optiques install\u00e9es sur les tubes de la boucle permettent de recueillir les spectres d\u2019absorption du fluide en circulation, gr\u00e2ce \u00e0 un spectrom\u00e8tre proche infrarouge \u00e0 transform\u00e9e de Fourier. Un \u00e9talonnage m\u00e9ticuleux est effectu\u00e9 via l\u2019acquisition de nombreux spectres d\u2019\u00e9chantillons ayant des compositions connues. Un mod\u00e8le statistique est alors cr\u00e9\u00e9 pour lier les concentrations aux donn\u00e9es spectrales. Les compositions peuvent ensuite \u00eatre estim\u00e9es \u00e0 partir de nouveau spectres, dont l\u2019acquisition rapide permet l\u2019analyse de la composition du fluide m\u00eame en fonctionnement dynamique de la pompe \u00e0 chaleur. Des m\u00e9langes de CO2 & propane, et CO2 & R-1234yf ont \u00e9t\u00e9 test\u00e9s, montrant des potentiels d\u2019am\u00e9lioration des performances de la pompe \u00e0 chaleur pour les applications de chauffage des locaux.<\/p>\n<table width=\"100%\" border=\"1\">\n<tr>\n<td><strong>Author<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Paul BOUTEILLER<\/td>\n<\/tr>\n<tr>\n<td><strong>Date de publication<\/strong><\/td>\n<\/tr>\n<tr>\n<td>6 avril 2017<\/td>\n<\/tr>\n<tr>\n<td><strong>Keywords<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Thermodynamique, M\u00e9langes, Spectroscopie, Composition, Cycle transcritique<\/td>\n<\/tr>\n<\/table>\n\n&nbsp;<br \/>\n\n<div class=\"eds-animate edsanimate-sis-hidden\" data-eds-entry-animation=\"bounceIn\" data-eds-entry-delay=\"0\" data-eds-entry-duration=\"1\" data-eds-entry-timing=\"linear\" data-eds-exit-animation=\"\" data-eds-exit-delay=\"\" data-eds-exit-duration=\"\" data-eds-exit-timing=\"\" data-eds-repeat-count=\"1\" data-eds-keep=\"yes\" data-eds-animate-on=\"load\" data-eds-scroll-offset=\"\">\n\t\t<div class=\"box info\">\n\t\t\t<div class=\"box-inner-block\">\n\t\t\t\t<span class=\"fa tie-shortcode-boxicon\"><\/span>\n<p style=\"text-align: justify;\"><strong>&#x2666; The full version is only available for subscribers <a style=\"text-decoration: none;\" href=\"\/en\/offre-du-greth\/\"><span style=\"background-color: #3db2ea; color: #fff;\">\"ESSENTIEL\"<\/span><\/a> or <a style=\"text-decoration: none;\" href=\"\/en\/offre-du-greth\/\"><span style=\"background-color: #c6002c; color: #fff;\">\"PREMIUM\"<\/span><\/a> of GRETh!<\/strong><\/p>\n<p>&#x2666; If you are already a member \/ subscriber, you must identify yourself by <a href=\"\/wp-login.php\"><strong>clicking here<\/strong><\/a>.<br \/>\n&#x2666; If you are not a member, you can consult the offer proposed by GRETh by <a href=\"\/en\/offre-du-greth\/\"><strong>clicking here<\/strong><\/a> as well as the conditions of membership by <a href=\"\/en\/conditions-adhesion\/\"><strong>clicking here<\/strong><\/a>.\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>","protected":false},"excerpt":{"rendered":"<p>R\u00e9sum\u00e9 : Cette \u00e9tude consiste en l\u2019exp\u00e9rimentation de m\u00e9langes de fluides frigorig\u00e8nes \u00e0 base de CO2 dans les applications de pompes \u00e0 chaleur domestiques. L\u2019objectif est l\u2019obtention de performances sup\u00e9rieures \u00e0 une pompe \u00e0 chaleur au CO2 double-service (eau chaude sanitaire et chauffage). L\u2019ajout d\u2019autres compos\u00e9s au CO2 d\u00e9place le point critique et de fa\u00e7on &hellip;<\/p>","protected":false},"author":1,"featured_media":962,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,21],"tags":[],"class_list":["post-9409","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-documents","category-memoires-theses"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.9 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>\u00c9tude exp\u00e9rimentale de cycles de pompe \u00e0 chaleur utilisant des m\u00e9langes \u00e0 base de CO2 - GRETh<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/greth.fr\/en\/etude-experimentale-de-cycles-de-pompe-a-chaleur-utilisant-des-melanges-a-base-de-co2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00c9tude exp\u00e9rimentale de cycles de pompe \u00e0 chaleur utilisant des m\u00e9langes \u00e0 base de CO2\" \/>\n<meta property=\"og:description\" content=\"R\u00e9sum\u00e9 : Cette \u00e9tude consiste en l\u2019exp\u00e9rimentation de m\u00e9langes de fluides frigorig\u00e8nes \u00e0 base de CO2 dans les applications de pompes \u00e0 chaleur domestiques. L\u2019objectif est l\u2019obtention de performances sup\u00e9rieures \u00e0 une pompe \u00e0 chaleur au CO2 double-service (eau chaude sanitaire et chauffage). 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