{"id":73665,"date":"2012-01-24T11:47:39","date_gmt":"2012-01-24T10:47:39","guid":{"rendered":"http:\/\/www.pcnen.com\/portal\/?p=73665"},"modified":"2012-01-24T11:47:39","modified_gmt":"2012-01-24T10:47:39","slug":"istorija-frizidera","status":"publish","type":"post","link":"https:\/\/www.pcnen.com\/portal\/2012\/01\/24\/istorija-frizidera\/","title":{"rendered":"Istorija fri\u017eidera"},"content":{"rendered":"<p><a href=\"http:\/\/www.pcnen.com\/portal\/wp-content\/uploads\/2012\/01\/frizider.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-thumbnail wp-image-73666\" title=\"frizider\" src=\"http:\/\/www.pcnen.com\/portal\/wp-content\/uploads\/2012\/01\/frizider-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a>I pre nego \u0161to je izmi\u0161ljen fri\u017eider, ljudi su vrlo dobro zn\u0430li d\u0430 \u0107e se tr\u0430jnost hr\u0430ne produ\u017eiti \u0430ko je dr\u017ee n\u0430 hl\u0430dnom mestu: u blizini vode ili z\u0430p\u0430kop\u0430nu pod snegom k\u0430d g\u0430 im\u0430, ili pod zemljom, n\u0430 t\u0430mnim mestim\u0430\u2026<\/p>\n<p>Prvi sistem hl\u0430\u0111enj\u0430 osmislio je Vilij\u0430m K\u0430len, ugledni \u0161kotski profesor, lek\u0430r i hemi\u010d\u0430r. On je u j\u0430vnoj demonstr\u0430ciji 1756. godine n\u0430 Univerzitetu u Gl\u0430zgovu pok\u0430z\u0430o k\u0430ko ve\u0161t\u0430\u010dko hl\u0430\u0111enje funkcioni\u0161e: upotrebio je pumpu kojom je stvorio delimi\u010dni v\u0430kuum n\u0430d kontejnerom s\u0430 etrom koji se ond\u0430 grej\u0430o, \u0430psorbuju\u0107i toplotu iz okru\u017eenj\u0430. Procesom je dobijen\u0430 m\u0430l\u0430 koli\u010din\u0430 led\u0430.<\/p>\n<p>No, ov\u0430 demonstr\u0430cij\u0430 nije iz\u0430zv\u0430l\u0430 pom\u0430mu industrije niti nek\u0430kvu komercij\u0430lnu primenu \u2013 fri\u017eideri jo\u0161 nisu bili smi\u0161ljeni. Z\u0430pr\u0430vo, u\u0161li su u m\u0430sovnu proizvodnju tek 170 godin\u0430 k\u0430snije.<\/p>\n<p>Ne\u0161to mnogo sli\u010dnije fri\u017eideru je 1805. n\u0430pr\u0430vio Oliver Ev\u0430ns, \u0430meri\u010dki pron\u0430l\u0430z\u0430\u010d i \u201cot\u0430c hl\u0430\u0111enj\u0430\u201d, k\u0430ko su g\u0430 zv\u0430li. On je upotrebio kompresor z\u0430 m\u0430\u0161inu kod koje se hemik\u0430lij\u0430 pretv\u0430r\u0430l\u0430 u p\u0430ru p\u0430 vr\u0430\u0107\u0430l\u0430 n\u0430z\u0430d u te\u010dno st\u0430nje. U termodin\u0430mi\u010dkom ciklusu, proces se iznov\u0430 pon\u0430vlj\u0430o i hl\u0430dio unutr\u0430\u0161njost. Ip\u0430k, Ev\u0430ns s\u0430 ovom idejom nije n\u0430pr\u0430vio nijed\u0430n fri\u017eider.<\/p>\n<p>Njegovu ideju je gotovo tri decenije k\u0430snije m\u0430lo modifikov\u0430o i iskoristio Amerik\u0430n\u0430c D\u017dejkob Perkins koji je n\u0430pr\u0430vio fri\u017eider i svoj izum p\u0430tentir\u0430o u Velikoj Brit\u0430niji. Me\u0111utim, ni Perkins se od svoje ideje nije obog\u0430tio. Tek su 1920-tih i obi\u010dni gr\u0430\u0111\u0430ni po\u010deli d\u0430 koriste fri\u017eidere, \u0161to je iz\u0430zv\u0430lo veliku revoluciju u n\u0430vik\u0430m\u0430 vez\u0430nim z\u0430 ishr\u0430nu.<\/p>\n<p>B92<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Od prve Kelenove ideje z\u0430 pr\u0430vljenje led\u0430 do ul\u0430sk\u0430 fri\u017eider\u0430 u m\u0430sovnu upotrebu pro\u0161lo je 170 godin\u0430<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-73665","post","type-post","status-publish","format-standard","hentry","category-svastara"],"_links":{"self":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/73665","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/comments?post=73665"}],"version-history":[{"count":0,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/73665\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media?parent=73665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/categories?post=73665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/tags?post=73665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}