Question

Problem 8.075 3.07 cool a sum mer home without using a vapo D compression refrigeration cycle, ar is routed through a plastic ppe k = 0.15 Wm K D, 0.15 m -17 C and with a smooth interior surface that is submerged in an adjoining body of water. The water temperature is nominally at T a crivection cemcient of ho = 1500 W/m2-K is maintained at the outer surface of the pipe. Air from the home enters the pipe at a temperature of 29°C and a volumetric flow rate of -0.038 m2/s, where a pipe length L-10 m is needed to provide a discharge temperature of Tm 4,01 . 17 m Ti 4.05 5.0 5.02 5.05 5.11 Ait Plastic pipe , D De し6.az Water, T (a) What is the air outlet temperature, T? What is the fan power requirement? (b) The convection coefficient associated with alirflow in the pipe may be increased twofold by inserting a colled spring along the length of the pipe to disrupt flow conditions near the inner surface, r such a heat transfer enhancement scheme i, adopted, what is the attendant vahe of r., ue of y Studythe insert would not come without a corresponding increase in the fan power requirement. What is the power requirement if the friction factor is increased by 509%

Please solve all 8 parts (heat & mass)

Answer 1