Nu = 5.45 = HW: Constant Surface Temperature Cooling water available at 10 °C is used to condense steam at 30 °C in the

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Nu 5 45 Hw Constant Surface Temperature Cooling Water Available At 10 C Is Used To Condense Steam At 30 C In The 1 (38.84 KiB) Viewed 17 times

Nu = 5.45 = HW: Constant Surface Temperature Cooling water available at 10 °C is used to condense steam at 30 °C in the condenser of a power plant at a rate of 0.15 kg/s by circulating the cooling water through a bank of 5 m long 1.2 cm internal diameter thin copper tubes. Water enters the tubes at a mean velocity of 4 m/s and leaves at a temperature of 24 C. The tubes are nearly isothermal at 30 °C. Determine the average heat transfer coefficient between the water, the tubes, and the number of tubes needed to achieve the indicated heat transfer rate in the condenser. The water properties at the average temperature are: p = 998.7 kg/m3, Cp = 4.1838 kJ/kg.K. Also, take the heat of vaporization f water at 30°C is hg = 2431 kJ/kg.K ht F 0.138 → h = Nu + ₁ = 5.45 +01= 752 w1|²x|