Das ist jetzt als *.valentin-software.co Seasonal Performace Factor (SPF) :: GeoT*SOL® help

In general: SPF = benefit / effort

  • Seasonal Performance Factor of the heat pump, determined by Simulation, with test points: Benefit is the heat supplied by the heat pump, and effort is the power consumption of the heat pump without external pumps and without a heating element.

  • Seasonal Performance Factor of the heat pump system:
    Benefit is the heat supplied by the heat pump and the heating element in total.
    Effort = power consumption of the heat pump
    + heating element energy consumption
    + power consumption of external pumps on the heat source side of the heat pump.

  • Seasonal Performance Factor of the generator system (HP + solar):
    The benefit is the total heat supplied by the heat pump, heating element, and solar system.
    Effort = power consumption of the heat pump
    + heating element energy consumption
    + power consumption of external pumps on the heat source side of the heat pump
    + power consumption of the solar circuit pump.

SPF according to VDI 4650

For mono-energetic systems, the power fraction at standard outdoor temperature must be entered to calculate the coverage fraction. The power share at standard outside temperature can be determined from the manufacturer’s data for the heat pump.

The following values are determined from the simulation results:

  • Min. source temperature (not applicable for air/water heat pumps)

  • Coverage fraction (calculated only for mono-energetic systems, taking into account the power fraction at standard outdoor temperature).

  • Outside temperature at the shutdown point (will be displayed from the page Operating mode in partially parallel operating mode adopted)

  • SPF heat pump (calculated seasonal performance factor according to VDI 4650)

  • SPF heat pump incl. solar system (calculated seasonal performance factor according to VDI 4650, taking into account the solar system)