The following data were obtained from a single glass cover flat plate solar heat collector: Mean plate temperature = 70°C; Ambient and sky temperature = 10°C; Back insulation thickness = 5cm; Insulation thermal conductivity 0.05 W/m°C; Coefficient of heat transfer by convection from plate to cover 3 W/m2°C; Equivalent coefficient of heat transfer by radiation from plate to cover = 6 W/m2°C; Coefficient of convective heat transfer from cover to ambient air = 25 W/m2°C and Equivalent coefficient for radiant heat transfer from cover to sky 5 W/m2°C. Compute the total heat loss per m2 collector area. Assume that resistance to heat flow by convection at the back surface of the insulation is negligible.