{"id":2435,"date":"2024-04-03T12:17:57","date_gmt":"2024-04-03T12:17:57","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/annex62\/?page_id=2435"},"modified":"2025-08-21T13:41:03","modified_gmt":"2025-08-21T13:41:03","slug":"1-4-centralized-heat-pump-system-for-the-whole-building","status":"publish","type":"page","link":"https:\/\/heatpumpingtechnologies.org\/project62\/1-4-centralized-heat-pump-system-for-the-whole-building\/","title":{"rendered":"1.4 Centralized Heat Pump System for the Whole Building"},"content":{"rendered":"\n
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A4<\/strong> (1.4) HEAT PUMP FOR DHW, OTHER DEVICE FOR HEATING<\/strong><\/strong><\/p>\n<\/div>\n\n

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Main characteristic of the concept<\/strong><\/h4>\n<\/div>\n\n
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One heat pump system for DHW, separate heat generator (fossil, biomass, electric, \u2026) for space heating.<\/p>\n<\/div><\/div>\n\n\n\n

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Heat distribution and temperatures levels<\/strong><\/h4>\n<\/div>\n\n
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Separate production of space heating and DHW. Temperature level of the space heating system is not relevant for the heat pump.  <\/p>\n<\/div>\n\n

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Size of building, number of apartments<\/strong><\/h4>\n<\/div>\n\n
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This solution is suitable for all sizes of buildings with the preference for smaller ones. Using specific heat source or refrigerant (for example CO2<\/sub>) may be an indicator to select this solution.<\/p>\n<\/div><\/div>\n\n\n\n

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DHW and storage characteristic<\/strong><\/h4>\n<\/div>\n\n
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Heat pump provides DHW only. Consequently, appropriate high temperature level is necessary. Storage tanks are necessary for providing of DHW by the heat pump. In cold climates a two-stage HP might be necessary.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n

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Energy standard, insulation level <\/strong><\/h4>\n<\/div>\n\n
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This solution is generally not to be recommended for new buildings due to use of fossil energy sources. Using a heat pump for DHW can only be practicable by retrofitting if existing system consists of two heat generators and the investor wants to exchange only one.<\/p>\n<\/div><\/div>\n\n\n\n

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Complexity of installation<\/strong><\/h4>\n<\/div>\n\n
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In case of retrofitting, exchanging one mode at a time may reduce the complexity of the planned construction work.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n

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Heat Sources<\/strong><\/h4>\n<\/div>\n\n
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All heat sources generally possible. For this solution some less frequently used heat sources like exhaust air or unglazed solar collectors can be used.<\/p>\n<\/div><\/div>\n\n\n\n

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Specific issues of the concept<\/strong><\/h4>\n<\/div>\n\n
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In case of retrofitting this solution allows exchange of only one heat generator and adopt a complete \u201cheat pump only\u201d solution at a second step. <\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n

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Positive aspects<\/strong><\/p>\n<\/div>\n\n

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