3. Heat transfer in turbulent flow in a tube: A fluid flows through a 1 inch diameter tube that is 20ft long with a mass flowrate of 15 pounds per min at 50F. The inside surface of the tube is maintained as constant temperature (T0=215F) via condensing steam. The physical properties of the fluid are = 55lb/At3,Cp=0.49BTU/bF=1.42lb/hrft, and k=0.0825BTU/hrftF. You can assume these parameters are temperature independent. (a) Calculate the Pr and Re numbers (b) Calculate the exit temperature of the fluid. Hint: because the fluid is turbulent, you should use Fig. 14.3-2 in BLSK where at constant surface temperature, (T0Tb)bu(T01Tb2)=ln(T0Tb2)(T0Tb1) (c) Calculate the total heat flow through the entire tube wall