The heat distribution in the house takes on a special floor heating. With their very low height and therefore low weight, the original wooden beamed ceilings of the listed building can easily carry the underfloor heating. At the same time a higher heat radiation performance is achieved, as previous calculations by the heating engineer showed that the building heat load with a low-temperature heating system can only be achieved by the additional internal insulation of some components. The air heat pump runs with a seasonal performance factor of 3.9.
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Lessons learned
- Quality of the system’s control is crucial.
- Compared to design data increased heat demand due to increased room temperature & DHW consumption
Key facts
| Building | Heat pump and source | |||
| Location | Kempen, Germany |
Number of HP | 1 | |
| Construction | 1881 (2008) | Installed power | 33 kW |
|
| Heat distribution | floor heating | Operation mode | monovalent | |
| Heated area | 470 m² living | Heat source | outside air |
|
| Level of insulation | unknown | |||
| Heating system | Domestic hot water | |||
| Heat demand | unknown | Type of system | unknown | |
| Heating temperature | unknown | Max. temperature | unknown | |
| Circulation system | unknown | |||
| Other information | ||||
| Electric energy consumption | unknown | |||
| Investments costs | unknown | |||
| PV installation | unknown | |||
Description of the technical concept
The challenge was to reconcile monument protection and modernization measures. The historic façade was therefore made with interior insulation. After the existing building had been heated with oil heating over the years and later with district heating, the new owner opted for an environmentally friendly variant and installed an energy-efficient air heat pump.
The heat distribution in the house takes on a special underfloor heating. With their extremely low construction height and therefore low weight, the original wooden beamed ceilings of the listed building can easily carry the underfloor heating. At the same time, a higher heat radiation output is achieved, as previous calculations by the heating contractor showed that the building heating load with a low-temperature heating system can only be achieved by the additional internal insulation of a number of components. The air heat pump runs with a seasonal performance factor of 3.9.
