Problem 1: Pressurized air A container of pressurized air has a volume of 0,40m3. It is not insulated, so the temperature is that of the environment, 15C. The pressure is 4 bar, while 1 bar in the environment. Air can be regarded an ideal gas. a) Determine the exergy of the air in the container. b) The air of the container is heated to 51C. Determine the supplied heat and the increase in exergy. (constant volume: the pressure increases)