An electric heater consumes 2 kW of electricity at steady state to keep a house at 27oC. The outside temperature is -10oC. Taking the heater inside the house as the system, determine (a) The maximum possible energetic efficiency of the heater.
(b) The rate of entropy generation in the heater's universe in W/K.
(c) If the surface of the heater is at 150oC, how much entropy is generated in the immediate surroundings of the heater?