{"id":30727,"date":"2019-06-04T14:54:20","date_gmt":"2019-06-04T12:54:20","guid":{"rendered":"http:\/\/136.144.181.85\/~nedzink\/technicke-info\/stavebni-fyzika\/difuze-pary\/"},"modified":"2021-04-06T17:03:46","modified_gmt":"2021-04-06T15:03:46","slug":"difuze-pary","status":"publish","type":"page","link":"https:\/\/www.nedzink.com\/cs\/difuze-pary\/","title":{"rendered":"Difuze p\u00e1ry"},"content":{"rendered":"<p>\n\t&nbsp;<\/p>\n<p>\n\tExistuj&iacute;c&iacute; teplotn&iacute; rozd&iacute;ly v konstrukci st\u011bn a st\u0159ech zp\u016fsobuj&iacute; proud\u011bn&iacute; vzduchu:<\/p>\n<ul>\n<li style=\"margin-left: 18pt; \">\n\t\t&nbsp; &nbsp; &nbsp;v l&eacute;t\u011b: zvenku sm\u011brem dovnit\u0159<\/li>\n<li style=\"margin-left: 18pt; \">\n\t\t&nbsp; &nbsp; &nbsp;v zim\u011b: zevnit\u0159 sm\u011brem ven<\/li>\n<\/ul>\n<p>\n\tV\u017edy jde o snahu vyrovn&aacute;vat vy&scaron;&scaron;&iacute; a ni\u017e&scaron;&iacute; teplotn&iacute; &uacute;rove\u0148. Pro st\u0159edn&iacute; Evropu to znamen&aacute;, \u017ee p\u0159ev&aacute;\u017en\u011b proud&iacute; teplo z vnit\u0159n&iacute;ch prostor budov sm\u011brem ven.<\/p>\n<p>\n\tJednotliv&eacute; vrstvy konstrukc&iacute; st\u0159ech a st\u011bn br&aacute;n&iacute; tomuto &uacute;niku tepeln&eacute; energie (difuze vzduchu a vlhkosti) r\u016fzn\u011b vysok&yacute;mi odpory. &Uacute;nik tepla se ud&aacute;v&aacute; v&yacute;po\u010dtovou hodnotou tepeln&eacute; vodivosti &lambda; [W\/m.K]. Tato hodnota ozna\u010duje mno\u017estv&iacute; tepla, kter&eacute; unikne za jednu hodinu vrstvou stavebn&iacute; hmoty o plo&scaron;e 1 m&sup2; a tlou&scaron;\u0165ce 1 m, jestli\u017ee teplotn&iacute; rozd&iacute;l mezi ob\u011bma plochami je 1 &ordm;K. Podrobn&eacute; &uacute;daje jsou uvedeny v DIN 4108 a v na\u0159&iacute;zen&iacute; pro &uacute;sporu energi&iacute; v p\u0159&iacute;slu&scaron;n&eacute;m platn&eacute;m zn\u011bn&iacute;.<\/p>\n<p>\n\tPopsan&yacute; prostup tepla stavebn&iacute;mi konstrukcemi doprov&aacute;z&iacute; difuze vzduchu a vlhkosti, jestli\u017ee j&iacute; nebr&aacute;n&iacute; konstruk\u010dn&iacute; opat\u0159en&iacute;. Na z&aacute;klad\u011b skute\u010dnosti, \u017ee vzduch m\u016f\u017ee p\u0159ij&iacute;mat a p\u0159epravovat v z&aacute;vislosti na sv&eacute; teplot\u011b v&iacute;ce \u010di m&eacute;n\u011b vlhkosti formou vodn&iacute; p&aacute;ry, vznik&aacute; v na&scaron;ich budov&aacute;ch po v\u011bt&scaron;inu \u010dasu v roce situace, kdy vnit\u0159n&iacute; prostor m&aacute; vy&scaron;&scaron;&iacute; teplotu s vy&scaron;&scaron;&iacute;m tlakem vodn&iacute; p&aacute;ry a venkovn&iacute; prostor pak ni\u017e&scaron;&iacute; teplotu s ni\u017e&scaron;&iacute;m tlakem vodn&iacute; p&aacute;ry. Tento rozd&iacute;l tlaku vyvol&aacute;v&aacute; tendenci o vyrovn&aacute;n&iacute; zevnit\u0159 ven, obdobn\u011b jako p\u0159i vyrovn&aacute;n&iacute; teploty. Toto pronik&aacute;n&iacute; vody ve form\u011b plynu jednotliv&yacute;mi vrstvami stavebn&iacute;ch materi&aacute;l\u016f skr&yacute;v&aacute; nebezpe\u010d&iacute; siln&eacute;ho ochlazen&iacute; p\u0159epravn&iacute;ho m&eacute;dia (vzduchu) p\u0159i styku s vn\u011bj&scaron;&iacute;mi chladn\u011bj&scaron;&iacute;mi vrstvami stavebn&iacute;ch materi&aacute;l\u016f, co\u017e m&aacute; za n&aacute;sledek vznik kondenz&aacute;tu a provlhnut&iacute; stavebn&iacute;ch d&iacute;l\u016f. Tomu je t\u0159eba zabr&aacute;nit vhodn&yacute;mi opat\u0159en&iacute;mi. Podrobn&eacute; &uacute;daje jsou uvedeny v DIN 4108 a v na\u0159&iacute;zen&iacute; pro ochranu tepla v p\u0159&iacute;slu&scaron;n&eacute;m platn&eacute;m zn\u011bn&iacute;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Existuj&iacute;c&iacute; teplotn&iacute; rozd&iacute;ly v konstrukci st\u011bn a st\u0159ech zp\u016fsobuj&iacute; proud\u011bn&iacute; vzduchu: &nbsp; &nbsp; &nbsp;v l&eacute;t\u011b: zvenku sm\u011brem dovnit\u0159 &nbsp; &nbsp; &nbsp;v zim\u011b: zevnit\u0159 sm\u011brem ven V\u017edy jde o snahu vyrovn&aacute;vat vy&scaron;&scaron;&iacute; a ni\u017e&scaron;&iacute; teplotn&iacute; &uacute;rove\u0148. Pro st\u0159edn&iacute; Evropu to znamen&aacute;, \u017ee p\u0159ev&aacute;\u017en\u011b proud&iacute; teplo z vnit\u0159n&iacute;ch prostor budov sm\u011brem ven. Jednotliv&eacute; vrstvy konstrukc&iacute; st\u0159ech [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"parent":0,"menu_order":670,"comment_status":"closed","ping_status":"closed","template":"template-import.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-30727","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Difuze p\u00e1ry &#8211; NedZink<\/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:\/\/www.nedzink.com\/cs\/difuze-pary\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Difuze p\u00e1ry &#8211; NedZink\" \/>\n<meta property=\"og:description\" content=\"&nbsp; Existuj&iacute;c&iacute; teplotn&iacute; rozd&iacute;ly v konstrukci st\u011bn a st\u0159ech zp\u016fsobuj&iacute; proud\u011bn&iacute; vzduchu: &nbsp; &nbsp; &nbsp;v l&eacute;t\u011b: zvenku sm\u011brem dovnit\u0159 &nbsp; &nbsp; &nbsp;v zim\u011b: zevnit\u0159 sm\u011brem ven V\u017edy jde o snahu vyrovn&aacute;vat vy&scaron;&scaron;&iacute; a ni\u017e&scaron;&iacute; teplotn&iacute; &uacute;rove\u0148. 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