W=30 cm 3. (35 pts) High pressure steam runs through a 15 cm diameter circular pipe that is housed in an internally insulated rectangular duct that is 30 cm on each side, as shown in the illustration. A length of 15 m is exposed to convective cooling with a heat transfer coefficient of 5 W/mK. The thermal conductivity of the insulation is 0.043 W/mK. If the ambient temperature is 5 C, determine the heat loss from the steam. BONUS (10 pts). Determine the weight of condensate produced if the latent heat of vaporization is 40.8 kJ/mol. D=10 cm T:=278K he =5 W/11-K T=373K k=0.043 W/mK