Pipes and ducts are the common devices used in open systems. This is because the transport of liquids or gases in pipes and ducts is of great importance in many engineering applications. Figure 1 shows the electric heating systems used in many houses consist of a simple duct with resistance heaters. Normally, air enters the 15 kW electric heating system under specific conditions as shown in that figure. However, due to some inefficiencies of that system, 200 W heat was released from the air in the duct to the surroundings, which considered as heat losses. Based on your knowledge, please determine the exit temperature of air, T2 for the electric heating system. Given that the air constant, R and its specific heat, cp are 0.287 kPa.m3 /kg.K and 1.005 kJ/kg. oC, respectively.