{"id":10657,"date":"1996-10-01T23:54:26","date_gmt":"1996-10-01T20:54:26","guid":{"rendered":"https:\/\/scripts.farmradio.fm\/fr\/?post_type=radio-resource-packs&p=10657"},"modified":"2017-12-13T00:44:59","modified_gmt":"2017-12-12T21:44:59","slug":"purifiez-leau-salee-par-lenergie-solaire","status":"publish","type":"radio-script","link":"https:\/\/scripts.farmradio.fm\/fr\/texte-radiophonique\/purifiez-leau-salee-par-lenergie-solaire\/","title":{"rendered":"Purifiez l’eau sal\u00e9e par l’\u00e9nergie solaire"},"content":{"rendered":"

Enregistrez et r\u00e9visez cette ressource sous forme de document Word.<\/a><\/p>\n

La vie d\u00e9pend autant de l’eau que de l’air. Malheureusement, tout le monde ne dispose pas d’eau pure et potable. Dans certaines r\u00e9gions, on n’a que de l’eau sal\u00e9e, qui rend malade. Il existe toutefois un moyen de purifier l’eau sal\u00e9e en utilisant la chaleur du soleil. Cette chaleur, on l’appelle \u00e9nergie solaire.<\/p>\n

Utiliser l’\u00e9nergie solaire, c’est capter les rayons du soleil et les concentrer en un point de mani\u00e8re \u00e0 obtenir une temp\u00e9rature \u00e9lev\u00e9e. L’\u00e9nergie solaire permet de cuire les aliments, de faire s\u00e9cher les r\u00e9coltes et de purifier l’eau. Contrairement \u00e0 d’autres sources d’\u00e9nergie comme le bois, le charbon, le p\u00e9trole et le gaz, celle du soleil est sans danger, ne pollue pas l’environnement, est abondante et gratuite!<\/p>\n

Distillateur solaire<\/b><\/p>\n

L’installation qui capte l’\u00e9nergie solaire pour purifier l’eau s’appelle distillateur solaire. Il en existe plusieurs types que vous pouvez fabriquer, mais l’un des plus simples ressemble \u00e0 une maisonnette dot\u00e9e d’un toit en forme de triangle. La base du distillateur a la forme d’une bo\u00eete. Elle est large, peu profonde et le fond est peint en noir. Le distillateur est g\u00e9n\u00e9ralement fabriqu\u00e9 de verre, mais vous pouvez utiliser plut\u00f4t d’\u00e9paisses feuilles de plastique.<\/p>\n

Pour purifier l’eau sal\u00e9e, vous la versez dans le fond du distillateur. Comme le fond est noir, il absorbe la chaleur et aide \u00e0 chauffer l’eau. Les rayons du soleil p\u00e9n\u00e8trent par le toit, traversent l’eau et sont emprisonn\u00e9s dans le fond noir. La chaleur du soleil fait alors \u00e9vaporer le plus gros de l’eau. Cette vapeur est de l’eau pure et elle s’accumule sur la face int\u00e9rieure du toit sous forme de gouttelettes. Le sel, la salet\u00e9 et les bact\u00e9ries qui pourraient vous rendre malade restent dans le fond du distillateur. La temp\u00e9rature plus fra\u00eeche sur l’ext\u00e9rieur du toit refroidit les gouttelettes. En se refroidissant, elles deviennent plus denses et plus lourdes puis s’\u00e9coulent sur les c\u00f4t\u00e9s du toit jusqu’aux goutti\u00e8res sur les c\u00f4t\u00e9s du distillateur. Ces goutti\u00e8res recueillent l’eau pure, qui est maintenant potable.<\/p>\n

L’utilisation de l’\u00e9nergie solaire pour purifier l’eau comporte toutefois des inconv\u00e9nients. Par exemple, il faut avoir beaucoup de jours ensoleill\u00e9s et une bonne quantit\u00e9 d’eau \u00e0 distiller. Une surface de 21 pieds carr\u00e9s (2 m\u00e8tres carr\u00e9s) produira environ 1 gallon (4 litres) d’eau distill\u00e9e en une journ\u00e9e. Si la disponibilit\u00e9 d’eau pure pose un probl\u00e8me dans votre r\u00e9gion, essayez cette m\u00e9thode peu co\u00fbteuse pour rendre l’eau potable.<\/p>\n

Note<\/b>Vous pouvez aussi fabriquer un distillateur dont le toit est en forme de pyramide. Il est un peu plus compliqu\u00e9 \u00e0 construire, mais emp\u00eache le vent de souffler la vapeur d’eau hors du distillateur avant qu’elle ne se condense sur le toit.<\/p>\n","protected":false},"excerpt":{"rendered":"

Enregistrez et r\u00e9visez cette ressource sous forme de document Word. La vie d\u00e9pend autant de l’eau que de l’air. Malheureusement, tout le monde ne dispose pas d’eau pure et potable. Dans certaines r\u00e9gions, on n’a que de l’eau sal\u00e9e, qui rend malade. Il existe toutefois un moyen de purifier l’eau sal\u00e9e en utilisant la chaleur…<\/p>\n","protected":false},"author":142,"featured_media":0,"parent":0,"menu_order":4,"template":"","meta":{"footnotes":"","beyondwords_generate_audio":"","beyondwords_integration_method":"","beyondwords_project_id":"","beyondwords_content_id":"","beyondwords_preview_token":"","beyondwords_player_content":"","beyondwords_player_style":"","beyondwords_language_code":"","beyondwords_language_id":"","beyondwords_title_voice_id":"","beyondwords_body_voice_id":"","beyondwords_summary_voice_id":"","beyondwords_error_message":"","beyondwords_disabled":"","beyondwords_delete_content":"","beyondwords_podcast_id":"","beyondwords_hash":"","publish_post_to_speechkit":"","speechkit_hash":"","speechkit_generate_audio":"","speechkit_project_id":"","speechkit_podcast_id":"","speechkit_error_message":"","speechkit_disabled":"","speechkit_access_key":"","speechkit_error":"","speechkit_info":"","speechkit_response":"","speechkit_retries":"","speechkit_status":"","speechkit_updated_at":"","_speechkit_link":"","_speechkit_text":""},"script-format":[487],"package":[714],"script-category":[838],"class_list":["post-10657","radio-script","type-radio-script","status-publish","hentry","script-format-fiche-documentaire","package-714","script-category-gestion-de-leau"],"acf":[],"yoast_head":"\nPurifiez l'eau sal\u00e9e par l'\u00e9nergie solaire - Farm Radio Scripts<\/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:\/\/scripts.farmradio.fm\/fr\/texte-radiophonique\/purifiez-leau-salee-par-lenergie-solaire\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Purifiez l'eau sal\u00e9e par l'\u00e9nergie solaire - Farm Radio Scripts\" \/>\n<meta property=\"og:description\" content=\"Enregistrez et r\u00e9visez cette ressource sous forme de document Word. 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