How many DualSun SPRING panels are necessary to provide heat to a water to water heat pump ?
We recommend the following sizing ratios depending on the heat pump technology and the low temperature limit of its evaporator:
PAC technology | Low limit temperature at evaporator inlet [°C] | Sizing ratio [PVT/kW calo PAC B0/W35] |
Inverter | - 15 °C | 1,1 |
Inverter | - 10 °C | 1,3 |
ON/OFF | - 15 °C | 1,2 |
ON/OFF | - 10 °C | 1,4 |
These ratios were calculated in order to ensure a better compromise between the initial cost of the solar installation and the energy performance of the system and can change depending on the detail of the configuration of the installation or the geographical area.
The rule is simple here: the greater the number of panels used, the better the thermal performance of the heat pump will be.
It is anyway mandatory to refine the sizing on a case-by-case basis by checking on the one hand that the solar thermal contribution of the hybrid panels is sufficient according to the data for your geographical area and on the other hand that the circulation pump integrated into the primary circuit of the pump heat is sufficient to circulate the heat transfer fluid in the hybrid panels.
> To go further : Are DualSun SPRING panels compatible with water-to-water heat pumps?
