{"id":757,"date":"2025-09-25T11:01:04","date_gmt":"2025-09-25T11:01:04","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/project57\/?post_type=case_studies&#038;p=757"},"modified":"2025-09-25T11:01:04","modified_gmt":"2025-09-25T11:01:04","slug":"smart-district-karlsruhe","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project57\/case-studies\/smart-district-karlsruhe\/","title":{"rendered":"Smart District Karlsruhe"},"content":{"rendered":"<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">Karlsruhe Durlach, Germany<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">The building forms part of a cluster of five large renovated multi-family<br>buildings from the 1960s within the Karlsruhe district Durlach, where an<br>integrated energy system is demonstrated within the research project \u201cSmart<br>district Durlach\u201d. The demonstrated heat pump technology features finned PVT<br>collectors as single source for the heat pump system. Ultrafiltration are units are<br>integrated in the drinking water circuit to allow low temperatures and maintain<br>the hygienic requirements. 13 out of 150 radiators were exchanged to allow a<br>heating temperature reduction to 55\/45 \u00b0C. The building was originally built in<br>1963 and renovated in 1995. The building features a heated floor area of 2112<br>m\u00b2 on 5 floors with a total of 30 apartments. The building was renovated<br>exchanging the windows with insulating glazing (Uwin = 1.7 W\/m\u00b2K), and adding<br>layers of thermal insulation (styrofoam, d = 60 mm, l = 0.035 W\/mK) to the<br>fa\u00e7ade, cellar and to ceiling, thus reducing the overall U-value of the opaque<br>envelope from Uenvelope = 1.71 W\/m\u00b2K to 0.323 W\/m\u00b2K.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><a href=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/69\/2024\/12\/two-pager-task-2-germany-smart-district-karlsruhe-durlach.pdf\">Two page summary<\/a><\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Karlsruhe Durlach, Germany The building forms part of a cluster of five large renovated multi-familybuildings from the 1960s within the&#8230;<\/p>\n","protected":false},"author":61,"featured_media":0,"menu_order":0,"template":"","filters":[93,85,95],"markets":[23],"applications":[39],"class_list":["post-757","case_studies","type-case_studies","status-publish","hentry","filters-distrubuted-hp","filters-germany","filters-in-operation","markets-germany","applications-system-integration-flexibility"],"acf":[],"_links":{"self":[{"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/case_studies\/757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/case_studies"}],"about":[{"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/types\/case_studies"}],"author":[{"embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/users\/61"}],"version-history":[{"count":1,"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/case_studies\/757\/revisions"}],"predecessor-version":[{"id":758,"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/case_studies\/757\/revisions\/758"}],"wp:attachment":[{"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/media?parent=757"}],"wp:term":[{"taxonomy":"filters","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/filters?post=757"},{"taxonomy":"markets","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/markets?post=757"},{"taxonomy":"applications","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project57\/wp-json\/wp\/v2\/applications?post=757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}