{"id":670,"date":"2023-11-21T15:45:28","date_gmt":"2023-11-21T14:45:28","guid":{"rendered":"https:\/\/wp.unil.ch\/20ans-fbm\/?page_id=670"},"modified":"2024-08-29T10:34:20","modified_gmt":"2024-08-29T08:34:20","slug":"quiz-n2","status":"publish","type":"page","link":"https:\/\/wp.unil.ch\/20ans-fbm\/quiz\/quiz-n2\/","title":{"rendered":"Quiz n\u00b02 : Les cong\u00e9lateurs aussi se r\u00e9chauffent"},"content":{"rendered":"\n<figure class=\"wp-block-image alignwide size-full\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1260\" height=\"800\" src=\"https:\/\/wp.unil.ch\/20ans-fbm\/files\/2024\/02\/congelo.jpg\" alt=\"\" class=\"wp-image-846\" srcset=\"https:\/\/wp.unil.ch\/20ans-fbm\/files\/2024\/02\/congelo.jpg 1260w, https:\/\/wp.unil.ch\/20ans-fbm\/files\/2024\/02\/congelo-300x190.jpg 300w, https:\/\/wp.unil.ch\/20ans-fbm\/files\/2024\/02\/congelo-1024x650.jpg 1024w, https:\/\/wp.unil.ch\/20ans-fbm\/files\/2024\/02\/congelo-768x488.jpg 768w, https:\/\/wp.unil.ch\/20ans-fbm\/files\/2024\/02\/congelo-540x343.jpg 540w, https:\/\/wp.unil.ch\/20ans-fbm\/files\/2024\/02\/congelo-1080x686.jpg 1080w\" sizes=\"auto, (max-width: 1260px) 100vw, 1260px\" \/><\/figure>\n\n\n\n<p>Al\u00e9a du r\u00e9chauffement climatique, ce sont les cong\u00e9lateurs \u00e0 ultra-basse temp\u00e9rature (ULT) des labos qui tendent \u00e0 se r\u00e9chauffer: beaucoup proposent de modifier leur temp\u00e9rature de -80\u00b0C, la norme actuelle, \u00e0 -70\u00b0C. Cela sans impact sur les \u00e9chantillons d\u2019ARN, les bact\u00e9ries, les prot\u00e9ines qui y sont stock\u00e9s.<br><\/p>\n\n\n\n<p><strong>Pour dix petits degr\u00e9s de plus, quelle \u00e9conomie d\u2019\u00e9nergie est possible?<\/strong><\/p>\n\n\n<ul>\n<li>4%<\/li>\n<li>16%<\/li>\n<li>28%<\/li>\n<\/ul>\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>D\u00e9couvrez la r\u00e9ponse<\/summary>\n<p>Remarque liminaire: est-il s\u00fbr de stocker des \u00e9chantillons \u00e0 -70\u00b0C? La <a href=\"https:\/\/www.mygreenlab.org\/-70-is-the-new--80.html\">r\u00e9ponse est oui<\/a> pour l\u2019ARN (l\u2019ADN, plus stable, peut m\u00eame \u00eatre stock\u00e9 \u00e0 -20\u00b0C), et oui, dans la grande majorit\u00e9 des cas, pour les prot\u00e9ines, les bact\u00e9ries et les virus.<\/p>\n\n\n\n<p>Selon une <a href=\"https:\/\/www.epfl.ch\/schools\/sv\/wp-content\/uploads\/2021\/11\/Analyse-Frigo-VF_FR.pdf\">\u00e9tude de l\u2019EPFL<\/a>, agr\u00e9geant des donn\u00e9es de l\u2019Universit\u00e9 de Californie, un cong\u00e9lateur de type \u00abEppendorf 570h\u00bb r\u00e9gl\u00e9 \u00e0 -80\u00b0C consomme 9,35 kilowattheures (kWh) par jour, contre 6,69 kWh s\u2019il est r\u00e9gl\u00e9 \u00e0 -70\u00b0C. <strong><font color=\"#c0ecfd\">Cela repr\u00e9sente une \u00e9conomie d\u2019\u00e9nergie de 28%.<\/font><\/strong> Une <a href=\"https:\/\/www.ed.ac.uk\/files\/atoms\/files\/efficient_ult_freezer_storage.pdf\">\u00e9tude de l\u2019Universit\u00e9 d\u2019Edimbourg<\/a> corrobore ce chiffre sur un autre type de cong\u00e9lateur \u00e0 ultra-basse temp\u00e9rature.<\/p>\n\n\n\n<p>Or 1 kWh correspond \u00e0 128 g de CO<sub>2<\/sub> si on prend en compte l&#8217;empreinte <a href=\"https:\/\/www.bafu.admin.ch\/dam\/bafu\/de\/dokumente\/klima\/fachinfo-daten\/Umweltbilanz-Strommix-Schweiz-2018-v2.01.pdf.download.pdf\/Umweltbilanz-Strommix-Schweiz-2018-v2.01.pdf\">du mix \u00e9lectrique suisse<\/a>. Selon les calculs du <a href=\"https:\/\/www.unil.ch\/centre-durabilite\/fr\/home.html\">Centre de comp\u00e9tence en durabilit\u00e9<\/a> (CCD) de l\u2019UNIL, r\u00e9gler un cong\u00e9lateur sur -70\u00b0C plut\u00f4t que -80\u00b0C correspondrait donc \u00e0 124 kg d&rsquo;\u00e9quivalent CO<sub>2<\/sub> \u00e9conomis\u00e9 sur 1 an (en gardant comme exemple un cong\u00e9lateur Eppendorf 570h).<\/p>\n<\/details>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<p>L\u2019heureux gagnant du Quiz n\u00b02 est <strong>Tanguy Bovey<\/strong>, \u00e9tudiant \u00e0 la FBM. F\u00e9licitations \u00e0 lui!<\/p>\n\n\n\n<p class=\"has-large-font-size\"><a href=\"https:\/\/wp.unil.ch\/20ans-fbm\/quiz\/quiz-n3\/\" data-type=\"page\" data-id=\"811\">&gt; Quiz n\u00b03<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Al\u00e9a du r\u00e9chauffement climatique, ce sont les cong\u00e9lateurs \u00e0 ultra-basse temp\u00e9rature (ULT) des labos qui tendent \u00e0 se r\u00e9chauffer: beaucoup proposent de modifier leur temp\u00e9rature de -80\u00b0C, la&hellip;<\/p>\n","protected":false},"author":855,"featured_media":0,"parent":536,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-full-width.php","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"class_list":["post-670","page","type-page","status-publish","has-post-thumbnail"],"_links":{"self":[{"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/pages\/670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/users\/855"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/comments?post=670"}],"version-history":[{"count":5,"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/pages\/670\/revisions"}],"predecessor-version":[{"id":1081,"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/pages\/670\/revisions\/1081"}],"up":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/pages\/536"}],"wp:attachment":[{"href":"https:\/\/wp.unil.ch\/20ans-fbm\/wp-json\/wp\/v2\/media?parent=670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}