At the motor vehicle master plant in Doren, Vorarlberg, an AERO SLM 6-17 was used for heating and cooling (no hot water). Thanks to the concrete core activation, it was possible to work with significantly reduced machine power compared to the calculation of the energy certificates.
Due to the PV system in combination with the concrete core activation, the heat pump can be switched off at night during most of the heating phase during the day by increasing the target flow temperature by up to 6K. There is neither an increase in room temperatures during the day (the concrete core caves off) even a noticeable cooling at night.
JAZ for heating and cooling: 4,9 although temperatures are deliberately raised in sunshine. Self-consumption rate of the PV system 64,5 %, self-sufficiency 41,4 %.