What is the thermal performance of the DualSun Spring panel?

As with all thermal solar panels, the power output of the DualSun Spring panel varies depending on the temperature of the water in the panel.  The graph here-below shows the thermal power output of our DualSun Spring panel (insulated and non-insulated versions) for different applications (each application has a different operating “panel temperature”).

At low temperatures,  (pour water-water heat pump coupling and pool heating), we recommend using the non-insulated version of the panel.  For domestic hot water heating, we recommend using the insulated version of the panel.

Power values are calculated using the a0, a1 coefficients and the panel surface (1.654m2) in STC conditions (Text = 25°C, G = 100W/m2).