Heat load of a heating system Based on:
Concrete wall 1.1W/m K, 0.15m
Window glass 1.5 W/m K, 0.005m
Ceiling insulation mineral wool 0.04 W/m K, 0.08m
a) Ignoring the interior and exterior convective resistances, obtain the overall coefficient of heat transfer. walls, windows and ceilings
b)Based on the results of the previous problem, calculate the thermal losses in [W] of a house of 150 m2 in winter, considering the following main areas: walls, windows and roofs The house has a floor plan of 10 m x 15 m, and a wall height of 2.5 m. 35% of the element area vertical corresponds to windows and the rest to walls. The roof area is 150 m2. An internal temperature of 18°C and an external one of 10°C are considered.