MCS has Barilla collectors listed under the technology type “Solar Keymark” and not “Solar Thermal” as you might expect.

The Solar Keymark is the European-wide standard for solar thermal collectors. Its requirements are above and beyond those laid down by MCS.

In our opinion this is the theoretical peak power output of a collector at 1.0 kW/m2 irradiation and zero degrees temperature differential between collector fluid temperature and ambient air temperature. To calculate this see below:

Barilla TZ Tube:  Peak Output (kW) = Number of Tubes x 0.093 x 0.734 x 1.0

Barilla F22 Flat-Plate: Peak Output (kW) = Number of Panels x 2.01 x 0.831 x 1.0

Use our Solar Thermal Design Assistant to build the system that you are assessing, this will give both a figure for the SAP solar input as required by MCS and our own estimated figure based on thousands of computer simulations.