{"id":2836,"date":"2025-03-11T10:58:45","date_gmt":"2025-03-11T10:58:45","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/annex62\/?page_id=2836"},"modified":"2025-09-12T14:52:49","modified_gmt":"2025-09-12T14:52:49","slug":"it010-hybrid-heat-pumps-with-solar-thermal-collectors-for-dhw-production","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project62\/case-studies\/it010-hybrid-heat-pumps-with-solar-thermal-collectors-for-dhw-production\/","title":{"rendered":"IT010 Corso Indipendenza"},"content":{"rendered":"\n
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Hybrid Heat Pumps with Solar Thermal Collectors for DHW production<\/strong><\/p>\n<\/div>\n\n

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Refurbishment of a 150-apartments building in Milan<\/p>\n<\/div><\/div>\n\n\n

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The energy retrofit project in Milan, Italy, concerns a 1970 residential complex with 150 apartments and 10,000 m\u00b2 of heated space. Using radiators and benefiting from good insulation, the building\u2019s energy system efficiency has been improved.<\/p>\n<\/div>\n\n

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The upgraded heating system combines 4 air-to-water SHEEN EVO 2.0 heat pumps, 4 gas boilers, 4 solar thermal collectors, and an INTELLIPLANT management system for optimized performance of the system. With 360 kW from heat pumps and 800 kW from gas boilers, space heating is provided at 55\u00b0C.<\/p>\n<\/div>\n\n

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DHW production is supported by three storage tanks, reaching up to 70\u00b0C, using the heat pumps, the solar thermal collectors and the gas boiler.<\/p>\n<\/div>\n\n

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Achieving a Coefficient of Performance (COP) of 3.36, the system uses R32 refrigerant for lower environmental impact. The integration of these technologies has enhanced energy efficiency and reduced costs, particularly for domestic hot water production.<\/p>\n<\/div>\n\n

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

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