{"id":2856,"date":"2025-03-11T12:09:52","date_gmt":"2025-03-11T12:09:52","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/annex62\/?page_id=2856"},"modified":"2025-09-12T14:53:29","modified_gmt":"2025-09-12T14:53:29","slug":"it011-viale-lombardia","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project62\/case-studies\/it011-viale-lombardia\/","title":{"rendered":"IT011 Viale Lombardia"},"content":{"rendered":"\n
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Water-to-Water Heat Pumps for a 30-Apartment Building<\/strong><\/strong><\/p>\n<\/div>\n\n\n

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Retrofit Solution for a Multi Family Building in Milan<\/p>\n<\/div><\/div>\n\n\n\n

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Originally constructed in 1980, this building, located in Milan, Italy, was recently renovated. It includes 30 apartments with a heated area of 1800 m2<\/sup>, and a good level of insulation. The heat distribution system consists of radiators and radiant floor system.<\/p>\n<\/div>\n\n

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The old heating system was replaced with two multifunction water-to-water heat pumps and supported by a backup gas boiler. The heating system has an installed power of 214 kW and operates with a supply temperature of 55\u00b0C. The management and monitoring of the energy plant are performed using INTELLIPLANT system.<\/p>\n<\/div>\n\n

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Domestic hot water is produced at a maximum temperature of 48\u00b0C, through a dedicated 750-liter thermal storage tank. The system\u2019s coefficient of performance (COP), with an output water temperature of 55\u00b0C, is 3.36.<\/p>\n<\/div>\n\n

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In this system, the use of geothermal energy from groundwater is maximized, significantly reducing the need for heat integration from the gas boilers, which is used only as an emergency backup. This solution enhanced the energy efficiency of the existing buildings, reducing fossil fuel consumption, and improving the indoor thermal comfort.<\/p>\n<\/div>\n\n

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Lessons learned<\/strong><\/p>\n<\/div>\n\n

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