FHUMU wer, Wisconsidering for your project that has an initial after tax outlay or after tax cost of $20,000. The future cash
in from its project are $ 840820, 530/200 md 20%) for years 1,2,3 and 4, respectively, weller uses the net
en medidas discount rate of 12% Will Dweller cept the project
19 de repede de opt become the NBV is less than

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.