A 24-foot uninsulated steam line crosses through a room. The outer diameter of the steam line is 12 in. and the outer surface temperature is 315 F. The convective heat transfer coefficient for the air is 20 Btu/hr-ft-F. The heat transfer rate from the pipe to the room is 2.96x105 Btu/hr. Given: Q = hAAT What is the air temperature in the room (F)? O 144 126 O 119 132 An engine receives 350 Btu of heat and operates at 33% efficiency. The heat source to the engine is at 310 F. Given: 7=1- - (4) TH What is the temperature at the heat exhaust receiver (F)?