{"id":3174,"date":"2023-04-15T09:26:01","date_gmt":"2023-04-15T07:26:01","guid":{"rendered":"https:\/\/www.karno.energy\/how-does-district-heating-work\/"},"modified":"2025-10-22T16:02:33","modified_gmt":"2025-10-22T14:02:33","slug":"how-does-district-heating-work","status":"publish","type":"post","link":"https:\/\/www.karno.energy\/en\/how-does-district-heating-work\/","title":{"rendered":"How Does District Heating Work?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text]More and more neighborhoods, buildings, and co-ownerships are adopting a <a href=\"https:\/\/www.karno.energy\/en\/process\/\"><strong>district heating network<\/strong><\/a>.<br \/>\nWhile the installation of this system is not yet widespread in Belgium, district heating is popular among our European neighbors.<\/p>\n<p>Specifically, what is it?<br \/>\nWhat is the difference between it and individual heating or a conventional gas boiler?<br \/>\nAnd how does this district heating system work?<\/p>\n<p>We explain everything in this article.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/2&#8243;]<style type=\"text\/css\" data-type=\"the7_shortcodes-inline-css\">.shortcode-single-image-wrap.shortcode-single-image-d5aef154547a3692c4f7fe72d472e821.enable-bg-rollover .rollover i,\n.shortcode-single-image-wrap.shortcode-single-image-d5aef154547a3692c4f7fe72d472e821.enable-bg-rollover .rollover-video i {\n  background: -webkit-linear-gradient();\n  background: linear-gradient();\n}\n.shortcode-single-image-wrap.shortcode-single-image-d5aef154547a3692c4f7fe72d472e821 .rollover-icon {\n  font-size: 32px;\n  color: #ffffff;\n  min-width: 44px;\n  min-height: 44px;\n  line-height: 44px;\n  border-radius: 100px;\n  border-style: solid;\n  border-width: 0px;\n}\n.dt-icon-bg-on.shortcode-single-image-wrap.shortcode-single-image-d5aef154547a3692c4f7fe72d472e821 .rollover-icon {\n  background: rgba(255,255,255,0.3);\n  box-shadow: none;\n}<\/style><div class=\"shortcode-single-image-wrap shortcode-single-image-d5aef154547a3692c4f7fe72d472e821 alignnone  vc_custom_1682061771470 enable-bg-rollover dt-icon-bg-off\" ><div class=\"shortcode-single-image custom-fade-right\"><div class=\"fancy-media-wrap\" style=\"border-radius:10px;\"><img loading=\"lazy\" decoding=\"async\" class=\"preload-me aspect\" src=\"https:\/\/www.karno.energy\/wp-content\/uploads\/2023\/04\/chauffage-urbain-6-800x800.jpeg\" srcset=\"https:\/\/www.karno.energy\/wp-content\/uploads\/2023\/04\/chauffage-urbain-6-800x800.jpeg 800w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" width=\"800\" height=\"800\"  data-dt-location=\"https:\/\/www.karno.energy\/en\/quels-sont-les-avantages-du-chauffage-urbain\/chauffage-urbain-6\/\" style=\"--ratio: 800 \/ 800;border-radius:10px;\" alt=\"Lave en fusion, d\u00e9versement de chaleur\" \/><\/div><\/div><\/div>[\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text]<\/p>\n<h2>What is District Heating?<\/h2>\n<p>The <strong>district heating system<\/strong> is also known as <strong>urban heating<\/strong>, <strong>heat network<\/strong>, or <a href=\"https:\/\/www.karno.energy\/en\/areas-of-activity\/\"><strong>thermal energy network<\/strong><\/a>. Its objective is to <strong>centralize the production of thermal energy<\/strong>, heat or cold, and to <strong>distribute<\/strong> this energy through a network to end consumers. <\/p>\n<p>This district heating system can supply thermal energy to <strong>private residences<\/strong>, such as an apartment building or a co-ownership, <strong>public<\/strong> <strong>or<\/strong> <strong>industrial<\/strong> buildings. Its installation usually occurs during the creation of a new district, but can also take place during major renovation works.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n<h2>Operation of a District Heating System<\/h2>\n<p>To operate, district heating consists of three main elements: <g id=\"gid_0\">production<\/g>, <strong>distribution<\/strong>, and <strong>the interface<\/strong> <strong>with the end consumer.<\/strong> Each of these elements can be <strong>regulated<\/strong> to <strong>optimize<\/strong> the heat network. To ensure an optimal network, coordination among all trades is necessary.   <\/p>\n<h3>Production<\/h3>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;5\/12&#8243;][vc_column_text]<\/p>\n<h4>The Central Heating Plant<\/h4>\n<p>The <strong>central heating plant<\/strong> produces the thermal energy required for all consumers of the urban district heating system. To do this, it uses <g id=\"gid_1\">different energy sources<\/g>. The most common are <g id=\"gid_2\">carbon-based sources<\/g>, such as fuel oil or natural gas. However, current technologies allow for the exploitation of <strong>more sustainable energy sources<\/strong>.[\/vc_column_text][\/vc_column][vc_column width=&#8221;7\/12&#8243;][vc_column_text]<\/p>\n<h4>A Decarbonized Energy Source<\/h4>\n<p>In some cases, sourcing can even be <strong>zero-carbon<\/strong>, meaning the heat network requires no carbon-based energy sources to produce heat and cold. This is the case, for example, if one opts for geothermal energy, wood, biogas, or waste heat. This sourcing ensures <strong>environmentally friendly<\/strong> heat consumption. As a result, the district heating system is a real opportunity to reduce one&#8217;s carbon footprint, decrease gas or fuel oil consumption, and <strong>significantly lower energy bills<\/strong>![\/vc_column_text][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1682061457317{margin-bottom: 35px !important;}&#8221;][vc_column][vc_column_text]<\/p>\n<h3>Distribution<\/h3>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_column_text]<\/p>\n<h4>Heat Transport<\/h4>\n<p>The thermal energy produced by the centralized heating plant is transported to buildings via a network of insulated, underground, and connected <strong>pipelines<\/strong> (called the primary network), and a <strong>heat transfer fluid<\/strong>. This fluid (e.g., water) is responsible for transporting the heat.[\/vc_column_text][\/vc_column][vc_column width=&#8221;2\/3&#8243; css=&#8221;.vc_custom_1682060706267{padding: 40px !important;background-color: #741614 !important;border-radius: 10px !important;}&#8221;][vc_column_text el_class=&#8221;custom-white&#8221; css=&#8221;.vc_custom_1682061865882{margin-bottom: 0px !important;}&#8221;]<\/p>\n<h3>Overview<\/h3>\n<p>The world leaders in heat networks are the Russians. More than half of the world&#8217;s installed urban heating capacity is located in their country, serving no fewer than 44 million Russians. Unfortunately, these networks are 98% powered by carbon-based sources and are in a dilapidated state with numerous losses due to poor insulation. This underscores the importance of a well-designed, regulated, and maintained network.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n<h4>Preventing Thermal Losses<\/h4>\n<p>Distribution faces a major challenge: <strong>heat transfer is inefficient<\/strong>. Therefore, solutions must be found to <strong>minimize thermal losses<\/strong> during transit. For efficient transport, the network&#8217;s <strong>design<\/strong> and <strong>regulation<\/strong> must be optimal.  <\/p>\n<p>The <strong>network design<\/strong> is established during its <strong>sizing<\/strong> and <strong>study<\/strong>. To choose the best arrangement, the design office must consider potential <g id=\"gid_3\">network extensions<\/g>, such as connections to other buildings, as well as the <g id=\"gid_4\">evolution<\/g> of building <g id=\"gid_5\">consumption<\/g>, such as their future insulation. Thus, the network&#8217;s design and its characteristics are well-defined and fixed.  <\/p>\n<p><strong>Regulation<\/strong> takes place after the network&#8217;s <strong>commissioning<\/strong>. The operator must ensure that the system performs as expected. Among other things, they verify that the fluid is at the correct <strong>temperature<\/strong> at every point in the network.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n<h3>The Interface with the End Consumer<\/h3>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text]<\/p>\n<h4>The Substation<\/h4>\n<p>The thermal energy circulating in the pipelines arrives at a <strong>substation<\/strong>, the heat delivery point. This substation is a <g id=\"gid_1\">heat exchange station<\/g> connected to a dwelling, such as a house, a co-ownership like an apartment building, or a complex of buildings. It ensures the <strong>final transfer<\/strong> of heat to the building&#8217;s <strong>internal heating circuit<\/strong>, known as the <strong>secondary network<\/strong>, reaching the radiators in the dwellings.  <\/p>\n<p>It must comply with <strong>control standards<\/strong> defined by the State to meter consumers&#8217; hot and cold consumption. Furthermore, it can also play a <strong>regulating<\/strong> role, through decentralized thermal storage or a booster, designed to raise the temperature locally, for example, for domestic hot water.[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text]<\/p>\n<h4>Return to the Central Heating Plant<\/h4>\n<p>Once the energy is delivered to the substation, the heat transfer fluid cools down while heating the building. The cold water <strong>returns through other pipelines<\/strong> to the central heating plant where it will be reheated and then <strong>sent back to consumers<\/strong> via the pipelines.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1682061457317{margin-bottom: 35px !important;}&#8221;][vc_column css=&#8221;.vc_custom_1682063526699{padding-top: 40px !important;padding-right: 40px !important;padding-bottom: 40px !important;padding-left: 40px !important;background-color: #741614 !important;border-radius: 10px !important;}&#8221;][vc_column_text el_class=&#8221;custom-white&#8221;]<\/p>\n<h2>In Conclusion<\/h2>\n<p>For proper operation, district heating requires <g id=\"gid_0\">regulation<\/g> and <g id=\"gid_1\">optimization<\/g> of heat <g id=\"gid_2\">production<\/g>, its <g id=\"gid_3\">distribution<\/g> through pipelines, and its <g id=\"gid_4\">delivery<\/g> to the end consumer. Therefore, <g id=\"gid_5\">expert work<\/g> before, during, and after system installation is necessary, as well as <g id=\"gid_6\">perfect coordination<\/g> among all stakeholders. This ensures consumers receive a <strong>heat network with optimal performance at all times<\/strong>.[\/vc_column_text]<style type=\"text\/css\" data-type=\"the7_shortcodes-inline-css\">#default-btn-93c0d9cfc8b415650cce51b658b7143b {\n  border-radius: 10px;\n  font-size: 16px;\n  line-height: 18px;\n}\n.btn-shadow#default-btn-93c0d9cfc8b415650cce51b658b7143b {\n  box-shadow: 0 1px 6px rgba(0,0,0,0.12);\n  transition: box-shadow 0.2s ease-out, opacity 0.45s;\n}\n.btn-shadow#default-btn-93c0d9cfc8b415650cce51b658b7143b:hover {\n  box-shadow: 0 5px 11px 0 rgba(0,0,0,0.18), 0 4px 15px 0 rgba(0,0,0,0.15);\n}\n.btn-3d#default-btn-93c0d9cfc8b415650cce51b658b7143b {\n  box-shadow: 0px 2px 0px 0px #e0e0e0;\n}\n.btn-3d#default-btn-93c0d9cfc8b415650cce51b658b7143b:hover {\n  box-shadow: 0px 2px 0px 0px #b04925;\n}\n.btn-flat#default-btn-93c0d9cfc8b415650cce51b658b7143b {\n  box-shadow: none;\n}\n.btn-flat#default-btn-93c0d9cfc8b415650cce51b658b7143b:hover {\n  box-shadow: none;\n}\n#default-btn-93c0d9cfc8b415650cce51b658b7143b.ico-right-side > i {\n  margin-right: 0px;\n  margin-left: 10px;\n}\n#default-btn-93c0d9cfc8b415650cce51b658b7143b > i {\n  margin-right: 10px;\n  font-size: 16px;\n}\n#default-btn-93c0d9cfc8b415650cce51b658b7143b:not(:hover) {\n  border-width: 0px;\n  color: #741614;\n  background: #ffffff !important;\n  padding: 12px 18px 12px 18px;\n}\n#default-btn-93c0d9cfc8b415650cce51b658b7143b:not(:hover) * {\n  color: #741614;\n}\n#default-btn-93c0d9cfc8b415650cce51b658b7143b:hover {\n  border-width: 0px;\n  color: #ffffff;\n  background: #ee5924 !important;\n  padding: 12px 18px 12px 18px;\n}\n#default-btn-93c0d9cfc8b415650cce51b658b7143b:hover * {\n  color: #ffffff;\n}\n#default-btn-93c0d9cfc8b415650cce51b658b7143b.ico-right-side > i {\n  margin-right: 0px;\n  margin-left: 10px;\n}\n#default-btn-93c0d9cfc8b415650cce51b658b7143b > i {\n  margin-right: 10px;\n}<\/style><a href=\"https:\/\/www.karno.energy\/contact\/\" class=\"default-btn-shortcode dt-btn link-hover-off ico-right-side btn-inline-right btn-flat \" id=\"default-btn-93c0d9cfc8b415650cce51b658b7143b\" title=\"Contact\"><span>CONTACTEZ-NOUS<\/span><i class=\"karno-karno\"><\/i><\/a>[\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text]More and more neighborhoods, buildings, and co-ownerships are adopting a district heating network. While the installation of this system is not yet widespread in Belgium, district heating is popular among our European neighbors. Specifically, what is it? What is the difference between it and individual heating or a conventional gas boiler? And how does this&hellip;<\/p>\n","protected":false},"author":1,"featured_media":3166,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3174","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-1","description-off"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>District Heating: how it Works<\/title>\n<meta name=\"description\" content=\"District heating centralizes the production of thermal energy and distributes it to consumers. 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