Average data of flat collector with good efficiency
record FlatSolarCollector1 = BuildingSystems.Technologies.SolarThermal.Data.Collectors.CollectorPartial(final IAMC = 0.88, final V_A = 1.5/1.8/980, final C_0 = 0.775, final C_1 = 3.75, final C_2 = 0.02, A = 1.0);