{"id":2204,"date":"2024-02-13T12:08:32","date_gmt":"2024-02-13T12:08:32","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/annex62\/?page_id=2204"},"modified":"2025-09-12T14:50:59","modified_gmt":"2025-09-12T14:50:59","slug":"individual-mini-heat-pumps-fed-by-a-central-loop","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project62\/case-studies\/individual-mini-heat-pumps-fed-by-a-central-loop\/","title":{"rendered":"Individual mini heat pumps fed by a central loop"},"content":{"rendered":"\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\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>Fennerstrasse Project, Innsbruck<\/strong><\/p>\n<\/div><\/div>\n\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">In Summer of 2022, in 48 apartments, a switch was made from individual boilers to a heat pump-boiler combination for hot water and heating as part of the thermal refurbishment.<\/p>\n<\/div>\n\n<div class=\"container\">\n<figure class=\"wp-block-image aligncenter size-full is-resized is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"435\" height=\"304\" src=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/at002-house-pic.png\" alt=\"\" class=\"wp-image-2205\" style=\"aspect-ratio:1.430921052631579;width:578px;height:auto\" srcset=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/at002-house-pic.png 435w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/at002-house-pic-300x210.png 300w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/02\/at002-house-pic-400x280.png 400w\" sizes=\"auto, (max-width: 435px) 100vw, 435px\" \/><\/figure>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"has-small-font-size wp-block-paragraph \">Picture: https:\/\/www.ehpa.org\/content\/uploads\/2023\/05\/Heat-pumps-in-high-rise-homes_case-studies-from-across-Europe_EHPA_May-2023.pdf<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><strong>Lessons learned<\/strong><\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<ul class=\"wp-block-list\">\n<li>The Fennerstrasse project will show just how much potential there is in the technology, which could serve as an important blueprint for renovating old buildings in the future,&#8221; said Josef Kurzmann, Vaillant sales manager.<\/li>\n\n\n\n<li>All those involved in the project agree that the mini-heat pump technology will provide valuable services in renovation projects in the future.<\/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>Innsbruck, Austria<\/em><\/td><td>Number of HP<\/td><td><em>48 individual<br>1 central<\/em><\/td><\/tr><tr><td>Construction<\/td><td><em>2022<\/em><\/td><td>Installed power<\/td><td><em>3 kW per <br>individual hp<\/em><\/td><\/tr><tr><td>Heat distribution<\/td><td><em>radiators and mix<\/em><\/td><td>Operation mode<\/td><td>bivalent<\/td><\/tr><tr><td>Heated area<\/td><td><em>&#8211; m\u00b2<\/em><\/td><td>Heat source<\/td><td>air, internal loop<\/td><\/tr><tr><td>No. of apartments<\/td><td><em>48<\/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; \/ (m\u00b2a)<\/em><\/td><td>DHW demand<\/td><td><em>26 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>central &#8211; decentral<\/em><\/td><\/tr><tr><td><\/td><td><\/td><td>Max. temperature<\/td><td>&#8211; \u00b0C<\/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>Refrigerant<\/td><td>R410A<\/td><td>SCOP<\/td><td><em>4<\/em><\/td><\/tr><tr><td>Sound level<\/td><td>38 db<\/td><td>Model<\/td><td><em>geoTHERM 3kW<\/em><\/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 container--no-margin\">\n<p class=\"wp-block-paragraph \">A large heat pump on the roof runs the collected energy with a flow temperature of only 20\u00b0C Celsius through the stairwells in a circulation system. In this way, the geoTHERM mini heat pumps installed in each apartment only have to increase the heat by a few degrees. By comparison, if the Fennerstrasse building were to rely on district heating supplied via the basement, the supply temperature would be 80\u00b0C and there would be high circulation losses.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">The Vaillant mini heat pump system is designed for maximum heat demand and can be installed directly in individual apartments &#8211; even if they are equipped with radiators. This makes the system ideal for a multi-apartment building with very low heating requirements and normal hot water needs. The wall-mounted unit hardly differs from a gas boiler in size and appearance and is particularly quiet, at only 38 decibels in heating mode.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">Together with a space-saving hot water storage tank, the geoTHERM mini also ensures a high level of hot water comfort.<\/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 is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link has-vivid-cyan-blue-color has-white-background-color has-text-color has-background has-medium-font-size has-text-align-center has-custom-font-size wp-element-button\" href=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2024\/01\/fact-sheet-vaillant-innsbruck2.pdf\" style=\"border-radius:5px;text-transform:none\" 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 \">AT002 Fennerstrasse&nbsp; <\/p>\n<\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Fennerstrasse Project, Innsbruck In Summer of 2022, in 48 apartments, a switch was made from individual boilers to a heat&#8230;<\/p>\n","protected":false},"author":41,"featured_media":0,"menu_order":0,"template":"","filters":[],"markets":[15],"applications":[7,41],"class_list":["post-2204","case_studies","type-case_studies","status-publish","hentry","markets-austria","applications-buildings","applications-multi-family-buildings"],"acf":[],"_links":{"self":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/2204","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":5,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/2204\/revisions"}],"predecessor-version":[{"id":3324,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/2204\/revisions\/3324"}],"wp:attachment":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/media?parent=2204"}],"wp:term":[{"taxonomy":"filters","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/filters?post=2204"},{"taxonomy":"markets","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/markets?post=2204"},{"taxonomy":"applications","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/applications?post=2204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}