Air is heater and flows inside a tube of 1 cm diameter with a velocity of V = 6 m/s in the fully developed region. Condensing steam on the outer surface of the tube heats the air by maintaining a uniform surface temperature. Calculate the heat transfer coefficient for the condensing steam. Evaluate air properties at 500C. For properties see chart in question 1. a) 5.9 W/m C b) 7.3 W/m C c) 11.2 W/m C d) 20.4 W/m2 C A 20 cm diameter plate is hanging in a large water pool at 90C. Determine the rate of heat input required to the plate so that it maintains a constant surface temperature of 210C. (Hint) Remember to use horizontal plate table 9-1 to determine the Lc) kW a) Q = 9.8k b) Q = 12.6 c) Q 16.1 = = d) Q = 21.2 kW kW kW