{"id":22237,"date":"2025-02-18T16:59:21","date_gmt":"2025-02-18T15:59:21","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=22237"},"modified":"2025-02-18T16:18:29","modified_gmt":"2025-02-18T15:18:29","slug":"vull-raigs-de-sol","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/vull-raigs-de-sol\/","title":{"rendered":"Vull raigs de sol"},"content":{"rendered":"<p style=\"font-weight: 400; text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright  wp-image-22249\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/02\/2-7-225x300.jpg\" alt=\"\" width=\"243\" height=\"324\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/02\/2-7-225x300.jpg 225w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/02\/2-7.jpg 600w\" sizes=\"auto, (max-width: 243px) 100vw, 243px\" \/>Dilluns 17 de febrer de 2025 l\u2019alumnat de 6\u00e8 de prim\u00e0ria de <a href=\"https:\/\/agora.xtec.cat\/ceippauvilaelpapiol\/\" target=\"_blank\" rel=\"noopener\">l\u2019Escola Paco Candel <\/a>de l&#8217;Hospitalet de Llobregat ha vingut a realitzar el projecte <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/recursos-del-medi-i-sostenibilitat\/el-nostre-amic-el-sol\/\" target=\"_blank\" rel=\"noopener\">El nostre amic el Sol.<\/a><\/p>\n<p style=\"font-weight: 400; text-align: justify;\">La benvinguda al <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/\" target=\"_blank\" rel=\"noopener\">Camp d\u2019aprenentatge Can Santoi<\/a> ha sigut ben c\u00e0lida, doncs han comen\u00e7at identificant els diferents tipus de radiaci\u00f3 que ens envia el Sol i quines utilitats poden tenir. Han reflexionat sobre l\u2019efecte dels colors foscos i l\u2019efecte hivernacle en relaci\u00f3 a l\u2019absorci\u00f3 de la calor i <span style=\"font-family: inherit; font-size: 1em;\">els possibles perills de les radiacions m\u00e9s energ\u00e8tiques com els raigs X o els UV.<\/span><\/p>\n<p style=\"font-weight: 400; text-align: justify;\">Despr\u00e9s d&#8217;una pausa per esmorzar, s\u2019han dividit en 9 grups per tal de participar en els seg\u00fcents tallers: la cuina solar, els col\u00b7lectors solars i la producci\u00f3 d\u2019electricitat amb les plaques fotovoltaiques.<\/p>\n<p style=\"font-weight: 400; text-align: justify;\">Sis dels grups s\u2019han convertit en cuiners solars per comprovar que la forma parab\u00f2lica \u00e9s la que permet concentrar els raigs del Sol en un \u00fanic punt central, on han col\u00b7locat una olla amb una mica d&#8217;aigua i un suport amb 4 pomes condimentades amb sucre i canyella. Com que tenim dues cuines, han pogut replicar aquest proc\u00e9s dues vegades, de manera que tres grups han utilitzat una olla negra i els altres tres una olla blanca. Cada 10 minuts han mesurat la temperatura de l\u2019aigua amb el term\u00f2metre i han vist que, al cap d&#8217;uns 50 minuts, ha augmentat fins els 73\u00baC en el cas de l&#8217;olla blanca i uns 98\u00baC en el cas de l&#8217;olla negre. A m\u00e9s de veure la seva efici\u00e8ncia i les difer\u00e8ncies degudes al color de l&#8217;olla, han pres consci\u00e8ncia de la utilitat d\u2019aquestes cuines tant senzilles per cuinar en llocs amb pocs recursos energ\u00e8tics.<\/p>\n<p style=\"font-weight: 400; text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-22250 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/02\/3-3-300x210.jpg\" alt=\"\" width=\"346\" height=\"242\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/02\/3-3-300x210.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/02\/3-3-768x537.jpg 768w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/02\/3-3.jpg 800w\" sizes=\"auto, (max-width: 346px) 100vw, 346px\" \/>Els tres grups restants han fet d\u2019escalfadors d\u2019aigua i, amb uns col\u00b7lectors solars (unes caixes de fusta ja preparades amb uns a\u00efllants a l\u2019interior i una m\u00e0nega negra amb aigua a dins), han muntat tres prototips amb diferent nombre de vidres de cobertora: un sense vidre, un altre amb un vidre i un tercer amb dos vidres. Aquest experiment els ha servit per comprendre que podem aprofitar la calor que ens proporciona el Sol per escalfar aigua i que els vidres s\u00f3n imprescindibles per recrear un efecte hivernacle al col\u00b7lector.<\/p>\n<p style=\"font-weight: 400; text-align: justify;\">Finalment, tots han participat al taller de producci\u00f3 d\u2019electricitat amb les plaques fotovoltaiques. Han apr\u00e8s que representen una bona oportunitat per canviar els sistemes d\u2019obtenci\u00f3 d\u2019energia neta, dels recursos f\u00f2ssils a les renovables i menys contaminants. En el taller han constru\u00eft un petit circuit per veure com la llum del Sol es transforma en un corrent el\u00e8ctric capa\u00e7 de moure un petit molinet. S&#8217;han sorpr\u00e8s en veure que, tot i que som al mes de desembre, la llum del sol \u00e9s m\u00e9s que suficient per generar electricitat amb una petita placa fotovoltaica!<\/p>\n<p style=\"font-weight: 400; text-align: justify;\">Heu treballat de valent, enhorabona i fins ben aviat!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dilluns 17 de febrer de 2025 l\u2019alumnat de 6\u00e8 de prim\u00e0ria de l\u2019Escola Paco Candel de l&#8217;Hospitalet de Llobregat ha vingut a realitzar el projecte El nostre amic el Sol. La benvinguda al Camp d\u2019aprenentatge Can Santoi ha sigut ben c\u00e0lida, doncs han comen\u00e7at identificant els diferents tipus de radiaci\u00f3 que ens envia el Sol [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":22243,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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