Consider a steady state heat flow through a 12 feet x 14 feet brick wall of thickness 15 inches and thermal conductivity 1.5 btu/(hr-ft-f). on a day when the temperature of the outdoor is 32 f, the house is maintained at 78 f. the temperatures of the inner and outer surfaces of the brick wall are to be 68 f and 41 f, respectively. determine the rate of entropy generation in the wall and the total rate of entropy generation associated with this heat transfer process