{"id":277890,"date":"2021-01-08T08:38:13","date_gmt":"2021-01-08T08:38:13","guid":{"rendered":"https:\/\/www.sanier.pl\/bw-hasla\/slownik-akumulacyjnosc\/"},"modified":"2025-02-06T09:48:48","modified_gmt":"2025-02-06T09:48:48","slug":"slownik-akumulacyjnosc","status":"publish","type":"knowledgebase","link":"https:\/\/www.sanier.pl\/en\/bw-hasla\/slownik-akumulacyjnosc\/","title":{"rendered":"Thermal Accumulation of a Wall"},"content":{"rendered":"<p>[vc_row][vc_column][vc_column_text]<\/p>\n<h2><strong>What Does Thermal Accumulation of a Wall Mean?<\/strong><\/h2>\n<p>The ability to store (accumulate) heat and release it when the room begins to cool down.<\/p>\n<p>Thermal accumulation of a wall refers to its <strong>ability to store heat<\/strong>. This depends mainly on the <strong>weight of the partition and the material from which it is made<\/strong>. That is why <strong>brick buildings and structures with high load-bearing capacity<\/strong> have a much <strong>higher ability to accumulate heat<\/strong> than <strong>wooden and lightweight constructions<\/strong> (wooden or steel).<\/p>\n<p>Here is an example demonstrating the importance of thermal accumulation:<\/p>\n<ul>\n<li>In a <strong>heavyweight building with very good thermal insulation (C\/B)<\/strong>, the <strong>indoor temperature should not drop by more than 1\u00b0C<\/strong>, even when the <strong>outside temperature is -20\u00b0C<\/strong>.<\/li>\n<li>In a <strong>heavyweight building with poor thermal insulation (C\/S)<\/strong>, the <strong>indoor temperature may drop by 3\u00b0C<\/strong>, requiring <strong>more energy<\/strong> to restore the recommended <strong>20\u00b0C<\/strong> room temperature.<\/li>\n<\/ul>\n<p>The <strong>thermal stability<\/strong> of a building depends on the <strong>accumulation of heat in internal walls, partitions, and construction layers<\/strong>, meaning <strong>how long the indoor temperature remains stable<\/strong> despite <strong>external weather changes<\/strong> (e.g., severe frost or strong winds) or the <strong>heating being turned off<\/strong>.<\/p>\n<p>For a <strong>partition to accumulate heat and release it inside<\/strong>, it must be <strong>insulated from the outside<\/strong>.<\/p>\n<h3><strong>Why Is Thermal Stability Important?<\/strong><\/h3>\n<ul>\n<li><strong>In permanently inhabited buildings<\/strong>, high <strong>thermal stability<\/strong> is required because it <strong>helps stabilize the indoor temperature<\/strong>.<\/li>\n<li>However, <strong>this is not beneficial for buildings that are not regularly used and are only heated on weekends<\/strong>, such as <strong>summer cottages, agricultural buildings, or tool sheds<\/strong>.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_single_image image=\"256771\" img_size=\"large\" alignment=\"center\"][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n<div class=\"flex max-w-full flex-col flex-grow\">\n<div class=\"min-h-8 text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words text-start [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"fc03de05-dde6-4f86-9ebb-b394c75bea55\" data-message-model-slug=\"gpt-4o\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<h3><strong>Heat Capacity and Heating Power<\/strong><\/h3>\n<p>Heat capacity and heating power required to change temperature.<\/p>\n<p>The <strong>heat capacity<\/strong> of building materials determines how much <strong>heat a material can store or release<\/strong> when its <strong>temperature changes<\/strong>.<\/p>\n<p>To put it simply:<\/p>\n<ul>\n<li><strong>1m\u00b3 of reinforced concrete<\/strong> needs <strong>0.667 kWh<\/strong> of energy to <strong>increase its temperature by 1K<\/strong> (Kelvin).<\/li>\n<li>The <strong>same amount of heat<\/strong> will be released when its <strong>temperature drops by 1K<\/strong>.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"mb-2 flex gap-3 empty:hidden -ml-2\">\n<div class=\"items-center justify-start rounded-xl p-1 flex\">\n<div class=\"flex items-center\"><\/div>\n<\/div>\n<\/div>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_single_image image=\"256772\" img_size=\"large\" alignment=\"center\"][\/vc_column][\/vc_row]<\/p>\n","protected":false},"author":1,"featured_media":280346,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","categories":[873],"tags":[],"class_list":["post-277890","knowledgebase","type-knowledgebase","status-publish","has-post-thumbnail","hentry","category-knowledge-base"],"_links":{"self":[{"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/knowledgebase\/277890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/knowledgebase"}],"about":[{"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/types\/knowledgebase"}],"author":[{"embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/comments?post=277890"}],"version-history":[{"count":0,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/knowledgebase\/277890\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/media\/280346"}],"wp:attachment":[{"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/media?parent=277890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/categories?post=277890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sanier.pl\/en\/wp-json\/wp\/v2\/tags?post=277890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}