A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 386 m2, a roof of wood 6.20 cm thick and area 298 m2, and uncovered windows 0.648 cm thick and total area 33.0 m2.
Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 22.2oC if the outside temperature is -10.4oC.