{"id":33721,"date":"2024-01-09T09:53:08","date_gmt":"2024-01-09T14:53:08","guid":{"rendered":"https:\/\/cna.ca\/?page_id=33721"},"modified":"2024-01-09T09:53:09","modified_gmt":"2024-01-09T14:53:09","slug":"hydrogene","status":"publish","type":"page","link":"https:\/\/cna.ca\/fr\/hydrogene\/","title":{"rendered":"Hydrog\u00e8ne"},"content":{"rendered":"\n<p>L\u2019hydrog\u00e8ne constitue l\u2019\u00e9l\u00e9ment chimique le plus abondant dans l\u2019univers. Incolore, inodore et non toxique, il s\u2019agit d\u2019un \u00e9l\u00e9ment essentiel \u00e0 la vie sur terre. Une mol\u00e9cule d\u2019hydrog\u00e8ne \u2013 H<sub>2<\/sub> \u2013 est souvent appel\u00e9e \u00ab&nbsp;vecteur \u00e9nerg\u00e9tique&nbsp;\u00bb car elle est produite \u00e0 partir d\u2019autres sources d\u2019\u00e9nergie. Contrairement \u00e0 l\u2019\u00e9lectricit\u00e9, il est possible de stocker l\u2019hydrog\u00e8ne en grandes quantit\u00e9s. De plus, c\u2019est un combustible propre et, lorsqu\u2019il est combin\u00e9 \u00e0 l\u2019oxyg\u00e8ne dans une pile \u00e0 combustible, l\u2019hydrog\u00e8ne produit de la chaleur et de l\u2019\u00e9lectricit\u00e9, avec pour seul sous-produit de la vapeur d\u2019eau. L\u2019hydrog\u00e8ne est \u00e9galement compatible avec les turbines \u00e0 combustion et les moteurs alternatifs permettant de produire de l\u2019\u00e9nergie pratiquement sans \u00e9mission de polluants. L\u2019hydrog\u00e8ne pourrait donc jouer un r\u00f4le consid\u00e9rable au sein des syst\u00e8mes \u00e9nerg\u00e9tiques et approvisionner tous les secteurs de l\u2019\u00e9conomie, en rempla\u00e7ant les combustibles fossiles et en contribuant \u00e0 att\u00e9nuer le r\u00e9chauffement plan\u00e9taire.&nbsp;<\/p>\n\n\n\n<p>Si l\u2019on entend concr\u00e9tiser l\u2019\u00e9norme potentiel de d\u00e9carbonisation de l\u2019hydrog\u00e8ne, sa production doit en outre tenir compte de l\u2019impact environnemental de ses sources d\u2019\u00e9nergie. Aujourd\u2019hui, la majeure partie de l\u2019hydrog\u00e8ne est produite par reformage du m\u00e9thane \u00e0 la vapeur ou par gaz\u00e9ification du charbon, ce qui entra\u00eene des \u00e9missions d\u00e9favorables consid\u00e9rables. Par cons\u00e9quent, pour produire de l\u2019hydrog\u00e8ne \u00e0 partir de sources d\u2019\u00e9nergie sans carbone, il est possible de recourir \u00e0 l\u2019\u00e9lectrolyse de l\u2019eau, o\u00f9 l\u2019\u00e9lectricit\u00e9 est utilis\u00e9e pour d\u00e9composer l\u2019eau en oxyg\u00e8ne et en hydrog\u00e8ne gazeux.<\/p>\n\n\n\n<p>Les technologies nucl\u00e9aires \u00e9voluent et font l\u2019objet de progr\u00e8s technologiques; elles repr\u00e9sentent donc une solution id\u00e9ale pour relever les d\u00e9fis actuels li\u00e9s \u00e0 la production d\u2019hydrog\u00e8ne gazeux. Outre la production d\u2019\u00e9lectricit\u00e9 propre, les centrales nucl\u00e9aires peuvent \u00e9galement produire une chaleur intense \u00e0 laquelle on peut adjoindre un \u00e9lectrolyseur \u00e0 vapeur \u00e0 haute temp\u00e9rature (HTSE) plus efficace. L\u2019hydrog\u00e8ne peut \u00eatre produit par \u00e9lectrolyse en utilisant l\u2019\u00e9lectricit\u00e9 nucl\u00e9aire hors pointe (\u00ab&nbsp;en p\u00e9riode creuse&nbsp;\u00bb), et les proc\u00e9d\u00e9s thermiques \u00e0 haute temp\u00e9rature ou le couplage avec de petits r\u00e9acteurs modulaires sont viables. Les r\u00e9acteurs avanc\u00e9s ou perfectionn\u00e9s qui fonctionnent \u00e0 tr\u00e8s haute temp\u00e9rature peuvent produire de l\u2019hydrog\u00e8ne par proc\u00e9d\u00e9 thermochimique sans utiliser d\u2019\u00e9lectrolyseurs. Les caract\u00e9ristiques uniques de l\u2019\u00e9nergie nucl\u00e9aire lui permettent de se combiner avec ces proc\u00e9d\u00e9s de production \u00e0 faible co\u00fbt et \u00e0 haut rendement, facilitant ainsi la comp\u00e9titivit\u00e9 \u00e9conomique de la production d\u2019hydrog\u00e8ne nucl\u00e9aire.<\/p>\n\n\n\n<p>Sachant que l\u2019\u00e9nergie nucl\u00e9aire peut apporter une valeur ajout\u00e9e \u00e0 la production d\u2019hydrog\u00e8ne, de nombreuses initiatives et projets pilotes ont vu le jour pour ouvrir la voie \u00e0 la production d\u2019hydrog\u00e8ne nucl\u00e9aire \u00e0 grande \u00e9chelle. Ces initiatives sont int\u00e9gr\u00e9es dans des planifications, des strat\u00e9gies et des visions nationales sur l\u2019hydrog\u00e8ne, notamment au Canada, au Royaume-Uni et aux \u00c9tats-Unis.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019hydrog\u00e8ne constitue l\u2019\u00e9l\u00e9ment chimique le plus abondant dans l\u2019univers. Incolore, inodore et non toxique, il s\u2019agit d\u2019un \u00e9l\u00e9ment essentiel \u00e0 la vie sur terre. Une mol\u00e9cule d\u2019hydrog\u00e8ne \u2013 H2 \u2013 est souvent appel\u00e9e \u00ab&nbsp;vecteur \u00e9nerg\u00e9tique&nbsp;\u00bb car elle est produite \u00e0 partir d\u2019autres sources d\u2019\u00e9nergie. Contrairement \u00e0 l\u2019\u00e9lectricit\u00e9, il est possible de stocker l\u2019hydrog\u00e8ne en grandes [&hellip;]<\/p>\n","protected":false},"author":8481,"featured_media":33100,"parent":0,"menu_order":22,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"topic":[],"class_list":["post-33721","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hydrog\u00e8ne - Association nucl\u00e9aire canadienne<\/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:\/\/cna.ca\/fr\/hydrogene\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hydrog\u00e8ne - Association nucl\u00e9aire canadienne\" \/>\n<meta property=\"og:description\" content=\"L\u2019hydrog\u00e8ne constitue l\u2019\u00e9l\u00e9ment chimique le plus abondant dans l\u2019univers. 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