{"id":2264,"date":"2024-02-22T10:04:32","date_gmt":"2024-02-22T10:04:32","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/annex62\/?page_id=2264"},"modified":"2025-09-12T14:45:31","modified_gmt":"2025-09-12T14:45:31","slug":"energy-island","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project62\/case-studies\/energy-island\/","title":{"rendered":"Energy Island"},"content":{"rendered":"\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \" style=\"font-size:25px\"><strong>Petershagen<\/strong><\/p>\n<\/div><\/div>\n\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">The new housing complex usesa ground-source heat pump in each of the six multi-family buildings for both Space Heating and Domestic Hot Water.<\/p>\n<\/div>\n\n<div class=\"container\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"987\" height=\"658\" src=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-building.png\" alt=\"\" class=\"wp-image-2265\" style=\"aspect-ratio:1.6289592760180995;width:448px;height:auto\" srcset=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-building.png 987w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-building-300x200.png 300w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-building-768x512.png 768w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-building-400x267.png 400w\" sizes=\"auto, (max-width: 987px) 100vw, 987px\" \/><figcaption class=\"wp-element-caption\"><sup data-fn=\"56f4550a-92b4-49b4-ba3c-e242882597b9\" class=\"fn\"><a href=\"#56f4550a-92b4-49b4-ba3c-e242882597b9\" id=\"56f4550a-92b4-49b4-ba3c-e242882597b9-link\">1<\/a><\/sup><\/figcaption><\/figure>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><strong>Lessons learned&nbsp;<\/strong><\/p>\n<\/div><\/div>\n\n\n<div class=\"container container--no-margin\">\n<ul class=\"wp-block-list\">\n<li>Passive cooling with ground heat exchanger<\/li>\n\n\n\n<li>Photovoltaic system and battery storage device<\/li>\n<\/ul>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><strong>Key facts<\/strong><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"container container--no-margin\">\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>Building<\/strong><\/td><td><\/td><td><strong>Heat Pump and Source<\/strong><\/td><td><\/td><\/tr><tr><td>Location<\/td><td><em>Petershagen, Germany<\/em><\/td><td>Number of HP<\/td><td><em>7<\/em><\/td><\/tr><tr><td>Construction<\/td><td><em>2018 et seqq.<\/em><\/td><td>Installed power<\/td><td><em>7 x 36 kW (P-rated)<\/em><\/td><\/tr><tr><td>Heat distribution<\/td><td>u<em>nderfloor heating<\/em><\/td><td>Operation mode<\/td><td><em>monoenergetic<\/em><\/td><\/tr><tr><td>Heated area<\/td><td><em>&#8211; m\u00b2<\/em><\/td><td>Heat source<\/td><td><em>geothermal<\/em><\/td><\/tr><tr><td>No. of apartments<\/td><td><em>80 (in 6 buildings)<\/em><\/td><td>Flowline temperature<\/td><td><em>68\u00b0C<\/em><\/td><\/tr><tr><td>level of insulation<\/td><td><em>very good (new building)<\/em><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><strong>Heating sytem<\/strong><\/td><td><\/td><td><strong>Domestic Hot Water<\/strong><\/td><td><\/td><\/tr><tr><td>Heat demand<\/td><td><em>&#8211; kWh \/ (m\u00b2a)<\/em><\/td><td>DHW demand<\/td><td><em>&#8211; kWh \/ (m\u00b2a)<\/em><\/td><\/tr><tr><td>Heating<br>temperature<\/td><td><em>&#8211; \u00b0C<\/em><\/td><td>Type of system<\/td><td><em>fresh water station in each system<\/em><\/td><\/tr><tr><td><\/td><td><\/td><td>Max. temperature<\/td><td><em>&#8211; \u00b0C<\/em> <\/td><\/tr><tr><td><\/td><td><\/td><td>Circulation system <\/td><td>&#8211;<\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><strong>Other information<\/strong><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>PV &amp; ST installation<\/td><td><em>yes<\/em><\/td><td>COP<\/td><td>&#8211;<\/td><\/tr><tr><td>Buffer storages<\/td><td><em>4 x 950l <\/em><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><strong>Description of the technical concept<\/strong><\/p>\n<\/div>\n\n<div class=\"container\">\n<figure class=\"wp-block-image aligncenter size-large is-resized is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"644\" src=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-hydraulic-scheme-1024x644.png\" alt=\"\" class=\"wp-image-2266\" style=\"aspect-ratio:1.5900621118012421;width:696px;height:auto\" srcset=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-hydraulic-scheme-1024x644.png 1024w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-hydraulic-scheme-300x189.png 300w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-hydraulic-scheme-768x483.png 768w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-hydraulic-scheme-1536x965.png 1536w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-hydraulic-scheme-400x251.png 400w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/de003-hydraulic-scheme.png 1580w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">In each building a heat pump system is installed.&nbsp; Each system consists of one ground-source heat pump (\u00e1&nbsp; 36&nbsp;kW; ERP label), a GHEX,&nbsp; four buffer storages (\u00e1 950&nbsp;L) and four heating rods installed in the storage tanks. Two buffer storages are used for room heating and two for domestic hot water. Due to the \u201c2 step tandem compressor\u201c with injection technology the maximum flowline temperature of the heat pump is 68\u00b0C.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">In the residential buildings fresh water stations are installed in each flat. In the community house one fresh water station supplies the DHW for the building.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">In summer the GHEX are used for passive cooling of the buildings.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">Photovoltaic panels are installed on the roofs of each building. If the energy production exceeds the electric load (heat pump, households, etc.)&nbsp; the heat pump can heat up the buffer storages to temperatures higher than the actual set point. Additionally, the battery storage device is charged.<\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"container container--no-margin\">\n<div class=\"wp-block-buttons is-horizontal is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-b989473c wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 has-custom-font-size is-style-outline has-medium-font-size is-style-outline--1\" style=\"text-transform:none\"><a class=\"wp-block-button__link has-vivid-cyan-blue-color has-white-background-color has-text-color has-background has-text-align-center wp-element-button\" href=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2020\/12\/germanypetershagenfinal.pdf\" style=\"border-radius:5px\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"84\" class=\"wp-image-2196\" style=\"width: 300px;\" src=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/fact-sheet-button-pic.png\" alt=\"\" srcset=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/fact-sheet-button-pic.png 845w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/fact-sheet-button-pic-300x84.png 300w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/fact-sheet-button-pic-768x215.png 768w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/fact-sheet-button-pic-400x112.png 400w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/> <\/a><\/div>\n<\/div>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"has-text-align-center wp-block-paragraph \">DE003 Energy Island&nbsp; <\/p>\n<\/div><\/div>\n<\/div>\n\n\n<ol class=\"wp-block-footnotes\"><li id=\"56f4550a-92b4-49b4-ba3c-e242882597b9\"><em>Source: Bosch Thermotechnik GmbH<\/em> <a href=\"#56f4550a-92b4-49b4-ba3c-e242882597b9-link\" aria-label=\"Jump to footnote reference 1\">\u21a9\ufe0e<\/a><\/li><\/ol><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Petershagen The new housing complex usesa ground-source heat pump in each of the six multi-family buildings for both Space Heating&#8230;<\/p>\n","protected":false},"author":41,"featured_media":0,"menu_order":0,"template":"","filters":[],"markets":[24],"applications":[7,41],"class_list":["post-2264","case_studies","type-case_studies","status-publish","hentry","markets-germany","applications-buildings","applications-multi-family-buildings"],"acf":[],"_links":{"self":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/2264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies"}],"about":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/types\/case_studies"}],"author":[{"embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/users\/41"}],"version-history":[{"count":2,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/2264\/revisions"}],"predecessor-version":[{"id":2268,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/2264\/revisions\/2268"}],"wp:attachment":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/media?parent=2264"}],"wp:term":[{"taxonomy":"filters","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/filters?post=2264"},{"taxonomy":"markets","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/markets?post=2264"},{"taxonomy":"applications","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/applications?post=2264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}