1 body - 4 pipes and 104 pipes per passage (each with a diameter of 2.6 cm, 4 m per passage A thin wall heat exchanger) will be used to heat the air. Water pipes to 8 kg / h at 350 K temperature With mass flow, air enters the body at 15 C with a mass flow of 18 kg / s. Over time, inside the pipe The pollution factor of the formed sediment is 0.0026 m2K / W. The transport coefficients on the inner and outer surfaces of the pipes are 450 and 200 W / m2K is estimated. Using specific temperatures at 25 C for air and water a-) The effectiveness of the heat exchanger by drawing the shape of the problem, b-) Heat transfer rate (kW), c-) Calculate the outlet temperatures (C) of the water and air and show the temperatures in the T_L diagram.