Calculate the overall heat transfer coefficients based on both inside and outside areas for the following cases Case 1 Water at 10C flowing in a 3 4 in 16 BWG condenser tube and saturated steam at 105C condensing on the outside h i 12 kW m 2 C h 14 kW m 2 C k m 120 W m C Case 2 Benzene condensing a...

Calculate the overall heat-transfer coefficients based on both inside and outside areas for the following cases. Case

Question:

Calculate the overall heat-transfer coefficients based on both inside and outside areas for the following cases.

Case 1 Water at 10°C flowing in a ³/₄-in. 16 BWG condenser tube and saturated steam at 105°C condensing on the outside. h_i= 12 kW/m² · °C. h_∘ = 14 kW/m²∙°C. k_m = 120 W/m · °C.

Case 2 Benzene condensing at atmospheric pressure on the outside of a 25-mm steel pipe and air at 15°C flowing within at 6 m/s. The pipe wall is 3.5 mm thick. h_i = 20 W/m² · °C. h_∘ = 1.200 W/m² · °C. k_m = 45 W/m · °C.

Case 3 Dropwise condensation from steam at a pressure of 50 lb_ƒ/in.² gauge on a 1-in. Schedule 40 steel pipe carrying oil at 100°F, h_∘ = 14,000 Btu/ft² · h · °F. h_i=130 Btu/ft² · h · °F. k_m= 26 Btu/ft · h · °F.