A rigid tank contains 10 kg of air at 500 K and 100 kPa while the surroundings

Question:

A rigid tank contains 10 kg of air at 500 K and 100 kPa while the surroundings is at 300 K. A 2 kW internal heater keeps the gas hot by compensating the heat losses. At steady state, determine the rate of
(a) Heat transfer.
(b) The rate of entropy generation (Sgen) inside the tank.
(c) The rate of entropy generation (Sgen,univ) in the system's universe.