{"id":829,"date":"2023-02-03T17:22:20","date_gmt":"2023-02-03T17:22:20","guid":{"rendered":"https:\/\/onesap.com\/?page_id=829"},"modified":"2024-12-02T16:00:36","modified_gmt":"2024-12-02T16:00:36","slug":"dynamic-u-value-calculator","status":"publish","type":"page","link":"https:\/\/onesap.com\/index.php\/dynamic-u-value-calculator\/","title":{"rendered":"U-Value Calculator"},"content":{"rendered":"\n<p><em>U-Value is the measure of the overall rate of heat transfer, by all mechanisms under standard conditions, through a particular section of construction<\/em><\/p>\n\n\n\n<p>In other words, a U-value is used to measure how well or how badly a component transmits heat from the inside to the outside of a building. The slower it is for heat to transfer through the component, the lower the U-value. This means that <strong>we are looking for a lower U-value<\/strong>.<\/p>\n\n\n<p>The table below illustrates the input data and formula required to calculate the U-Value for a wall. Typical components of bricks, rigid polyisocyanurate (PIR) insulation, concrete blocks and plaster are used.<\/p>\n<p>The thermal resistance (R) is determined by dividing the thickness of the material (in metres) by its lambda value (thermal conductivity). In accordance with EN 13165, R-values should be rounded down to the nearest 0.05 (m2K\/W)<\/p>\n<p><iframe loading=\"lazy\" style=\"background: transparent; border: 1px solid #ccc;\" src=\"https:\/\/airtable.com\/embed\/shrJsovYScfbtZg1v?backgroundColor=blue&amp;viewControls=on\" width=\"100%\" height=\"533\" frameborder=\"0\"><\/iframe><\/p>\n<p>The U-Value (thermal transmittance) in units of W\/m2K shows the ability of an element to transmit heat form a warm space to a cold space in a building, and vice versa. The lower the U-Value the better insulated the building element is.<\/p>\n<p>U-Value is the reciprocal of the summation of all the resistances of the materials. U-Value=1\/(R1+R2+R*). In the example above U-Value = 1\/(0.10+7.10+0.55+0.05)= 1\/7.80 = 0.128 W\/m2K<br><iframe loading=\"lazy\" style=\"background: transparent; border: 1px solid #ccc;\" src=\"https:\/\/airtable.com\/embed\/shr3eAyuxT2oHf9UQ?backgroundColor=blue&amp;viewControls=on\" width=\"100%\" height=\"533\" frameborder=\"0\"><\/iframe><\/p>","protected":false},"excerpt":{"rendered":"<p>U-Value is the measure of the overall rate of heat transfer, by all mechanisms under standard conditions, through a particular section of construction In other words, a U-value is used to measure how well or how badly a component transmits heat from the inside to the outside of a building. The slower it is for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-829","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onesap.com\/index.php\/wp-json\/wp\/v2\/pages\/829"}],"collection":[{"href":"https:\/\/onesap.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/onesap.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/onesap.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/onesap.com\/index.php\/wp-json\/wp\/v2\/comments?post=829"}],"version-history":[{"count":17,"href":"https:\/\/onesap.com\/index.php\/wp-json\/wp\/v2\/pages\/829\/revisions"}],"predecessor-version":[{"id":895,"href":"https:\/\/onesap.com\/index.php\/wp-json\/wp\/v2\/pages\/829\/revisions\/895"}],"wp:attachment":[{"href":"https:\/\/onesap.com\/index.php\/wp-json\/wp\/v2\/media?parent=829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}