{"id":4707,"date":"2017-03-04T14:52:01","date_gmt":"2017-03-04T13:52:01","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/tarragones\/?p=4707"},"modified":"2019-04-29T11:49:36","modified_gmt":"2019-04-29T09:49:36","slug":"rionut","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/dinamitzacio\/trics\/rionut\/","title":{"rendered":"Gel Sec: Caracter\u00edstiques i  Aplicabilitat en la Superconductivitat"},"content":{"rendered":"<p><span style=\"color: #808080;\"><em><strong>T\u00edtol:<\/strong><\/em> <\/span><strong>Gel Sec: Caracter\u00edstiques i Aplicabilitat en la Superconductivitat<\/strong><br \/>\n<span style=\"color: #808080;\"><em><strong>Autor:<\/strong><\/em> <\/span><strong>Raimond Ionut Ureche<\/strong><br \/>\n<span style=\"color: #808080;\"><em><strong>Tutor:<\/strong> <\/em><\/span>Josep M. Aliaga Tom\u00e0s<br \/>\n<span style=\"color: #808080;\"><em><strong>Modalitat:<\/strong> <\/em><\/span>Ci\u00e8ncies i Tecnologia<br \/>\n<span style=\"color: #808080;\"><em><strong>\u00c0rea curricular:<\/strong><\/em><\/span> Tecnologia<br \/>\n<em><strong><span style=\"color: #808080;\">Centre:<\/span> <\/strong><\/em>Ins Comte de Rius<br \/>\n<span style=\"color: #808080;\"><em><strong>Localitat:<\/strong>\u00a0<\/em><\/span>Tarragona<\/p>\n<p style=\"text-align: justify;\">El gel sec o neu carb\u00f2nica \u00a0\u00e9s l\u2019estat s\u00f2lid del di\u00f2xid de carboni (CO2) a pressi\u00f3 atmosf\u00e8rica.\u00a0El gel sec canvia el seu estat directament de s\u00f2lid a gasos, un proc\u00e9s conegut com sublimaci\u00f3, en condicions atmosf\u00e8riques normals. La seva temperatura de sublimaci\u00f3 es de -78\u00b0C. No passa per l\u2019estat l\u00edquid, i per aix\u00f2, rep el nom de gel sec.<\/p>\n<h6><strong>Objectius:<a href=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5036 alignright\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-3.jpg\" alt=\"result-3\" width=\"280\" height=\"210\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-3.jpg 400w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-3-300x225.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-3-200x150.jpg 200w\" sizes=\"auto, (max-width: 280px) 100vw, 280px\" \/><\/a><\/strong><\/h6>\n<ul>\n<li>Con\u00e8ixer les caracter\u00edstiques del gel sec i les seves propietats.<\/li>\n<li>Saber les utilitzacions actuals del gel sec.<\/li>\n<li>Investigar el proc\u00e9s d\u2019obtenci\u00f3 del gel sec.<\/li>\n<li>Realitzar experiments per comprovar algunes de les propietats i aplicacions del gel sec.<\/li>\n<li>Estudiar la possible aplicabilitat del gel sec en els fen\u00f2mens de superconductivitat<\/li>\n<\/ul>\n<h6><strong>Hip\u00f2tesis:<\/strong><\/h6>\n<ul>\n<li style=\"text-align: justify;\">Hip\u00f2tesi 1:\u201cLa sublimaci\u00f3 del gel sec pot aprofitar-se per produir corrent el\u00e8ctric\u201d<a href=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-2.jpg\"><br \/>\n<\/a><\/li>\n<li style=\"text-align: justify;\">Hip\u00f2tesi 2:\u201cEl gel sec permet reduir considerablement la resistivitat d\u2019un conductor, i per tant, minimitzar les p\u00e8rdues energ\u00e8tiques per l\u2019efecte Joule\u201d<\/li>\n<li style=\"text-align: justify;\">Hip\u00f2tesi 3: \u201cEl gel sec podria utilitzar-se com a a\u00efllant t\u00e8rmic per alentir l\u2019evaporaci\u00f3 del nitrogen l\u00edquid i aix\u00ed allargar l\u2019efecte Meissner en materials\u00a0superconductors\u201d<strong><a href=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-5034\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result.jpg\" alt=\"result\" width=\"271\" height=\"203\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result.jpg 400w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-300x225.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-200x150.jpg 200w\" sizes=\"auto, (max-width: 271px) 100vw, 271px\" \/><\/a><\/strong><\/li>\n<\/ul>\n<h6 style=\"text-align: justify;\"><strong>Proc\u00e9s:<\/strong><\/h6>\n<p style=\"text-align: justify;\">El meu treball consta d\u2019una primera part descriptiva del gel sec i les seves caracter\u00edstiques. I una segona part, la m\u00e9s important, l\u2019experimentaci\u00f3 de les propietats del gel sec i de la seva possible aplicabilitat en els fen\u00f2mens de superconductivitat<\/p>\n<h6><strong>Conclusions:<\/strong><\/h6>\n<ul>\n<li style=\"text-align: justify;\">Al finalitzar el meu treball de recerca, crec que he assolit els objectius plantejats en un inici.<\/li>\n<li style=\"text-align: justify;\">La hip\u00f2tesi 1, s\u2019ha validat correctament, per\u00f2 els resultats mostren que en el meu experiment hi ha un rendiment baix. Caldria seguir investigant com<\/li>\n<li style=\"text-align: justify;\">poder aconseguir millorar el rendiment energ\u00e8tic.<\/li>\n<li style=\"text-align: justify;\">La hip\u00f2tesi 2, s\u2019ha validat correctament, ja que ha quedat demostrar que si s\u2019utilitz\u00e9s el gel sec per refredar els cables conductors d\u2019electricitat hi hauria<\/li>\n<li style=\"text-align: justify;\">un estalvi energ\u00e8tic d\u2019un 28,4% respecte a la temperatura ambiental, ja que no es perdria tanta energia en forma de calor per culpa de l\u2019efecte Joule.<img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5031 alignright\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-1-e1488714860779.jpg\" alt=\"result-1\" width=\"195\" height=\"260\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-1-e1488714860779.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/03\/result-1-e1488714860779-226x300.jpg 226w\" sizes=\"auto, (max-width: 195px) 100vw, 195px\" \/><\/li>\n<li style=\"text-align: justify;\">La hip\u00f2tesi 3, s\u2019ha validat correctament. Si s\u2019utilitz\u00e9s gel sec com a a\u00efllant t\u00e8rmic es milloraria el rendiment de l\u2019efecte Meissner en un 38% aproximadament.<\/li>\n<\/ul>\n<h6><strong>Bibliografia:<\/strong><\/h6>\n<ul style=\"list-style-type: disc;\">\n<li>CONRAD, Agust\u00ed. Tecnologia industrial 1. Madrid: Mc Graw Hill, 2012.<\/li>\n<li>ENCYCLOPEDIA.COM. Dry ice [En l\u00ednia] <a href=\"http:\/\/www.encyclopedia.com\/science-and-technology\/chemistry\/compoundsand-elements\/dry-ice\" target=\"_blank\" rel=\"noopener\">http:\/\/www.encyclopedia.com\/science-and-technology\/chemistry\/compoundsand-elements\/dry-ice\u00a0 <\/a>[Consulta: 27\/09\/2016]<\/li>\n<li>GINZBURG Vitaly. Superconductivity. Londres, World Scientific, 2004 <a href=\"https:\/\/books.google.es\/books?id=Uf3ICgAAQBAJ&amp;printsec=frontcover&amp;dq=superconductivity&amp;hl=ca&amp;sa=X&amp;sqi=2&amp;ved=0ahUKEwjo9sOsjOPRAhUqLcAKHS_6DrMQ6AEIKjAB#v=onepage&amp;q=Vitaly%20Ginzburg&amp;f=false\" target=\"_blank\" rel=\"noopener\">https:\/\/books.google.es\/books?id=Uf3ICgAAQBAJ&amp;printsec=frontcover&amp;dq=superconductivity&amp;hl=ca&amp;sa=X&amp;sqi=2&amp;ved=0ahUKEwjo9sOsjOPRAhUqLcAKHS_6DrMQ6AEIKjAB#v=onepage&amp;q=Vitaly%20Ginzburg&amp;f=false<\/a> [Consulta: 12\/10\/2016]<\/li>\n<li>MOLERA I SOL\u00c0, P. Ci\u00e8ncias dels materials. Universitat Barcelona, 17 set. 2007 <a href=\"https:\/\/books.google.es\/books?id=vB0SWB9sf1cC&amp;pg=PA226&amp;dq=superconductivitat&amp;hl=ca&amp;sa=X&amp;ved=0ahUKEwiPosvKpOfPAhXMnBoKHQtrDo4Q6AEILTAE#v=onepage&amp;q=superconductivitat&amp;f=false\" target=\"_blank\" rel=\"noopener\">https:\/\/books.google.es\/books?id=vB0SWB9sf1cC&amp;pg=PA226&amp;dq=superconductivitat&amp;hl=ca&amp;sa=X&amp;ved=0ahUKEwiPosvKpOfPAhXMnBoKHQtrDo4Q6AEILTAE#v=onepage&amp;q=superconductivitat&amp;f=false<\/a> [Consulta: 28\/11\/2016]<\/li>\n<li>THE WONDERS OF DRY ICE. Discovery and Production of Dry Ice. [En l\u00ednia] <a href=\"http:\/\/theepicnessofdryice.weebly.com\/discovery-and-production.html\" target=\"_blank\" rel=\"noopener\">http:\/\/theepicnessofdryice.weebly.com\/discovery-and-production.html <\/a>[Consulta: 23\/11\/2016]<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Ins Comte de Rius<\/p>\n","protected":false},"author":1,"featured_media":5993,"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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