{"id":3597,"date":"2026-03-19T09:40:03","date_gmt":"2026-03-19T09:40:03","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/project62\/?post_type=case_studies&#038;p=3597"},"modified":"2026-03-19T09:40:03","modified_gmt":"2026-03-19T09:40:03","slug":"it004-complesso-della-torre-italy","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project62\/case-studies\/it004-complesso-della-torre-italy\/","title":{"rendered":"IT004 Complesso della Torre, Italy"},"content":{"rendered":"<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><strong>A sea-centered project<\/strong><\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">The project is focused on the use of latent heat with two ice storages and heat pumps in combination with<br>unglazed solar collectors and a PV system. It is designed as a pilot project for local heat supply.<\/p>\n<\/div>\n\n<div class=\"container\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"825\" height=\"535\" src=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2026\/03\/screenshot-2026-03-19-101819.png\" alt=\"\" class=\"wp-image-3598\" srcset=\"https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2026\/03\/screenshot-2026-03-19-101819.png 825w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2026\/03\/screenshot-2026-03-19-101819-300x195.png 300w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2026\/03\/screenshot-2026-03-19-101819-768x498.png 768w, https:\/\/heatpumpingtechnologies.org\/content\/uploads\/sites\/75\/2026\/03\/screenshot-2026-03-19-101819-400x259.png 400w\" sizes=\"auto, (max-width: 825px) 100vw, 825px\" \/><\/figure>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">In Savona in north-west Italy, the Spanish architect Ricardo Bofill was commissioned to design a new residential and commercial<br>district. The idea was to revamp the dock area of the town and give it a new lease of life, as planned by investors and local authorities.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">The space, known as the \u2018Complesso della Torre\u2019, was to include a 19-story apartment block, a courtyard and a commercial space<br>with a hotel, 31 shop units and 20 office units.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">Inspired by the complex\u2019s portside location, Bofill designed the two buildings to reflect the town\u2019s historic links to the sea.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">The sea\u2019s presence in the new complex would be more than simply symbolic. It would also have a crucial technical role: providing the<br>energy for the air conditioning and domestic hot water of the entire project via a heat pump system.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">This could work because sea water has a fairly consistent temperature \u2013 from 14\u00b0C in winter to 24\u00b0C in summer \u2013 and because the complex is situated right by the sea<\/p>\n<\/div>\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>Use of innovative heat source \u2013 the sea is an unlimited renewable opportunity, with stable and favorable temperature conditions year-round<\/li>\n\n\n\n<li>Heat Pumps are extremely flexible: the whole district is served by this technology in a variety of combinations and applications<\/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<div class=\"container container--no-margin\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><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>Savona, Italy<\/td><td>Number of heat pumps<\/td><td>6 (hotel) 150 (commercial and residential units)<\/td><\/tr><tr><td>Construction<\/td><td>2007<\/td><td>Operation mode<\/td><td>Monoenergetic<\/td><\/tr><tr><td>Heat distribution<\/td><td>underfloor heating<\/td><td>Heat source<\/td><td>(sea) water, air<\/td><\/tr><tr><td>Heated space<\/td><td>69.000 m\u00b3<\/td><td><\/td><td><\/td><\/tr><tr><td>Structure<\/td><td>1 hotel (96 rooms conference<br>center) 103 flats, 20 offices, 31 shops<\/td><td><\/td><td><\/td><\/tr><tr><td>Level of insulation<\/td><td>very good<\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><strong>Heating System<\/strong><\/td><td><\/td><td><strong>Domestic hot water<\/strong><\/td><td><\/td><\/tr><tr><td>Heat demand<\/td><td>7,4 MW (7400kW=<\/td><td>Type of system<\/td><td>mix<\/td><\/tr><tr><td>Heating temperature<\/td><td>35 and 55\u00b0C<\/td><td><\/td><td><\/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>Coefficient of Performance<\/td><td>Up to 6.4<\/td><td><\/td><td><\/td><\/tr><tr><td>Refrigerant<\/td><td>R410A<\/td><td><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><strong>Description of technical concept<\/strong><\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">Sea water is drawn up through a concrete duct, protected by an intake grill and a shut-off damper, into a 60 m\u00b3 settling tank, which isolates dust from the water and stabilises the water level. It then flows to strainers and three exchangers made from titanium steel, which resists salt water corrosion. Water is then returned to the sea with a difference in temperature which is kept to 3\u00b0C in order to respect marine life.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><br>The load side of the heat exchangers is the water loop, with a reverse return design, that feeds the water-to-water heat pumps.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><br>In the hotel, two central heat pumps, 400 kW each, provide cold and hot water and domestic hot water at 55\u00b0C. These are connected to 190 terminal units. Ventilation is provided by four air-to-air stand-alone heat pumps complete with thermodynamic heat recovery and four additional air handling units.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><br>Flats, offices and shops are served by 150 local waterto-water heat pumps, connected to more than 680 duct type terminal units.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \"><strong>The Results:<br><\/strong>Each user has independent heating or cooling throughout the year, with immediate accounting on its own electricity meter.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">The use of heat pumps for domestic hot water avoided the construction of heating plants with the associated bureaucracy and costs of installing gas pipes.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">Thanks to the use of sea water, design analysis over a one year period highlighted an average saving of 70% when compared to a traditional system based on gas boilers.<\/p>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">Evironmental impact too has been drastically reduced as direct CO2 emissions have been thouroughly eliminated and indirect emissions have been practically halved.<\/p>\n<\/div>\n\n<div class=\"container\">\n<figure class=\"wp-block-image is-resized\"><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\/2026\/03\/fact-sheet-clivet-savonar1.pdf\"><img loading=\"lazy\" decoding=\"async\" width=\"845\" height=\"237\" src=\"https:\/\/heatpumpingtechnologies.org\/annex62\/wp-content\/uploads\/sites\/75\/2024\/02\/fact-sheet-button-pic.png\" alt=\"\" class=\"wp-image-2196\" style=\"width:333px;height:auto\" 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: 845px) 100vw, 845px\" \/><\/a><\/figure>\n<\/div>\n\n<div class=\"container container--no-margin\">\n<p class=\"wp-block-paragraph \">Case study delivered by: <em>Team China (Clivet, Midea)<\/em><\/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>A sea-centered project The project is focused on the use of latent heat with two ice storages and heat pumps&#8230;<\/p>\n","protected":false},"author":69,"featured_media":0,"menu_order":0,"template":"","filters":[],"markets":[],"applications":[],"class_list":["post-3597","case_studies","type-case_studies","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/3597","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\/69"}],"version-history":[{"count":1,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/3597\/revisions"}],"predecessor-version":[{"id":3600,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/case_studies\/3597\/revisions\/3600"}],"wp:attachment":[{"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/media?parent=3597"}],"wp:term":[{"taxonomy":"filters","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/filters?post=3597"},{"taxonomy":"markets","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/markets?post=3597"},{"taxonomy":"applications","embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project62\/wp-json\/wp\/v2\/applications?post=3597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}