{"id":449,"date":"2019-01-28T11:40:58","date_gmt":"2019-01-28T11:40:58","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/annex62\/?page_id=449"},"modified":"2025-07-09T08:35:54","modified_gmt":"2025-07-09T08:35:54","slug":"boarding-house-potsdam","status":"publish","type":"case_studies","link":"https:\/\/heatpumpingtechnologies.org\/project62\/case-studies\/boarding-house-potsdam\/","title":{"rendered":"Boarding House Potsdam"},"content":{"rendered":"
The new building with 37 high quality apartments and a restaurant is located directly on the Havel. Contamination of the soil meant that the originally planned geothermal probes could not be used in combination with a brine \/ water heat pump. Alternatively, a concept was implemented with the air + brine \/ water heat pump hybrid system ThermSelect from MHG. A cascade of 3 ThermSelect 34 with a heating capacity of 37.7 kW each was used. Instead of the geothermal probes, a solar ice storage system with 2 \u00e9 50,000 liters of ice storage was installed to cover the peak load at low outside temperatures. \u00a0The ice storage tanks are regenerated by solar collectors. The system controller integrated in the hybrid heat pumps ThermSelect decides which heat source is used, depending on the heat source temperatures. Primarily, the outside air is used as a heat source. If the outside temperature falls below the temperature of the ice storage system, this is connected in parallel and compensates for the deficit of the air.<\/p>\n

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