{"id":283,"date":"2019-12-26T18:16:39","date_gmt":"2019-12-26T17:16:39","guid":{"rendered":"https:\/\/www.theta-dresden.de\/?page_id=283"},"modified":"2025-09-30T09:14:11","modified_gmt":"2025-09-30T08:14:11","slug":"thermal-network-theory","status":"publish","type":"page","link":"https:\/\/www.theta-dresden.de\/en\/thermal-network-theory","title":{"rendered":"Thermal Network Theory"},"content":{"rendered":"<p align=\"justify\">The Ther\u00admal Net\u00adwork Library is a high\u00adly effi\u00adcient and self-explana\u00adto\u00adry unit that enables its users to dimen\u00adsion the most diverse elec\u00adtri\u00adcal com\u00adpo\u00adnents ther\u00admal\u00adly on the basis of the <span class=\"caps\">RCL<\/span> net\u00adwork pro\u00adgramme OrCad PSpice. In order to cal\u00adcu\u00adlate tem\u00adper\u00ada\u00adtures, three process\u00ades have to be distinguished.<\/p>\n<p align=\"justify\">The heat gen\u00ader\u00ada\u00adtion process\u00ades are described math\u00ade\u00admat\u00adi\u00adcal\u00adly in dis\u00adcrete sources:<\/p>\n<ul>\n<li>\n<p align=\"justify\">ohmic loss depen\u00addent on the geom\u00ade\u00adtry of the con\u00adduc\u00adtor, the qual\u00adi\u00adties of the con\u00adduc\u00adtor mate\u00adr\u00adi\u00adal, the load cur\u00adrent, which is avail\u00adable in dif\u00adfer\u00adent and defined char\u00adac\u00adter\u00adis\u00adtics, and the skin effect result\u00ading from the sys\u00adtem frequency<\/p>\n<\/li>\n<li>\n<p align=\"justify\">pow\u00ader of solar and sky radi\u00ada\u00adtion depen\u00addent on place and&nbsp;time<\/p>\n<\/li>\n<\/ul>\n<p align=\"justify\">The heat trans\u00adfer process\u00ades occur\u00ading in elec\u00adtri\u00adcal devices and instal\u00adla\u00adtions. They are described math\u00ade\u00admat\u00adi\u00adcal\u00adly by dis\u00adcrete resistances:<\/p>\n<ul>\n<li>\n<p align=\"justify\">heat con\u00adduc\u00adtion depen\u00addent on the geom\u00ade\u00adtry of the con\u00adduc\u00adtor and the ther\u00admal con\u00adduc\u00adtiv\u00adi\u00adty of the con\u00adduc\u00adtor material<\/p>\n<\/li>\n<li>\n<p align=\"justify\">heat radi\u00ada\u00adtion depen\u00addent on the geom\u00ade\u00adtry and the sur\u00adface qual\u00adi\u00adties of the conductor<\/p>\n<\/li>\n<li>\n<p align=\"justify\">con\u00advec\u00adtion depen\u00addent on the geom\u00ade\u00adtry of the con\u00adduc\u00adtor, the gaseous or flu\u00adid cool\u00ading medi\u00adum and the coolant velocity<\/p>\n<\/li>\n<li>\n<p align=\"justify\">con\u00advec\u00adtion in gas-shaped hol\u00adlow spaces depen\u00addent on the geom\u00ade\u00adtry and the gaseous or flu\u00adid cool\u00ading medium<\/p>\n<\/li>\n<li>\n<p align=\"justify\">coolant cir\u00adcu\u00adla\u00adtion and coolant flow rate depen\u00addent on the gaseous or flu\u00adid cool\u00ading medi\u00adum and the ven\u00adti\u00adla\u00adtion&nbsp;slots<\/p>\n<\/li>\n<\/ul>\n<p align=\"justify\">This math\u00ade\u00admat\u00adi\u00adcal descrip\u00adtion is pos\u00adsi\u00adble not only pres\u00adsure-depen\u00addent for the media air, <span class=\"caps\">SF<\/span><sub>6<\/sub> and nitro\u00adgene, but also for water and insu\u00adlat\u00ading oil. In order to exam\u00adine elec\u00adtrotech\u00adni\u00adcal devices and instal\u00adla\u00adtions under dynam\u00adic aspects, heat stor\u00adage process\u00ades in the form of heat stor\u00adage capac\u00adi\u00adties have to be tak\u00aden into con\u00adsid\u00ader\u00ada\u00adtion in the ther\u00admal net\u00adwork. These depend on the geom\u00ade\u00adtry of the con\u00adduc\u00adtor and on its mate\u00adr\u00adi\u00adal values.<\/p>\n<p>&nbsp;<\/p>\n<table style=\"border-width: 0px; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"border-width: 0px; text-align: center;\"><a href=\"https:\/\/www.theta-dresden.de\/en\/thermal-network-library\"><span style=\"color: #fa2121;\">Intro\u00adduc\u00adtion<\/span><\/a><\/td>\n<td style=\"border-width: 0px; text-align: center;\"><a href=\"https:\/\/www.theta-dresden.de\/en\/thermal-network-example\"><span style=\"color: #fa2121;\">Exam\u00adple<\/span><\/a><\/td>\n<\/tr>\n<\/tbody><\/table>\n<p style=\"text-align: right;\"><a href=\"https:\/\/www.theta-dresden.de\/en\/software\"><span style=\"color: #fa2121;\">Return to overview<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Ther\u00admal Net\u00adwork Library is a high\u00adly effi\u00adcient and self-explana\u00ad\u00adto\u00adry unit that enables its users to dimen\u00adsion the most diverse elec\u00adtri\u00adcal com\u00adpo\u00adnents ther\u00admal\u00adly on the basis of the <span class=\"caps\">RCL<\/span> net\u00adwork pro\u00adgramme OrCad PSpice. In order to cal\u00adcu\u00adlate tem\u00adper\u00ada\u00adtures, three process\u00ades have to be dis\u00adtin\u00adguished. The heat gen\u00ader\u00ada\u00adtion process\u00ades are described math\u00ade\u00admat\u00adi\u00adcal\u00adly in dis\u00adcrete sources: ohmic\u2026 <br> <a class=\"read-more\" href=\"https:\/\/www.theta-dresden.de\/en\/thermal-network-theory\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":522,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"wp_typography_post_enhancements_disabled":false,"footnotes":""},"class_list":["post-283","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Thermal Network Theory - THETA Ingenieurb\u00fcro GmbH<\/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.theta-dresden.de\/en\/thermal-network-theory\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Thermal Network Theory - THETA Ingenieurb\u00fcro GmbH\" \/>\n<meta property=\"og:description\" content=\"The Ther\u00admal Net\u00adwork Library is a high\u00adly effi\u00adcient and self-explana\u00adto\u00adry unit that enables its users to dimen\u00adsion the most diverse elec\u00adtri\u00adcal com\u00adpo\u00adnents ther\u00admal\u00adly on the basis of the RCL net\u00adwork pro\u00adgramme OrCad PSpice. 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