Steam exiting the turbine of a steam power plant at 40°C is to be condensed in a large condenser by cooling water flowing through copper pipes (k = 386 W/m-°C) of inner diam- eter 1 cm and outer diameter 1.5 cm at an average temperature of 20°C. The heat of vaporization of water at 40°C is 2407 kJ/kg. The heat transfer coefficients are 13,000 W/m².°C on the steam side and 200 W/m2.°C on the water side. Determine 17-74 the length of the tube required to condense steam at a rate of 115 kg/h. Answer: 622 m Steam, 40°C 115 kg/h Cooling water Liquid water

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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17–74 Steam exiting the turbine of a steam power plant at
40°C is to be condensed in a large condenser by cooling water
flowing through copper pipes (k = 386 W/m-°C) of inner diam-
eter 1 cm and outer diameter 1.5 cm at an average temperature
of 20°C. The heat of vaporization of water at 40°C is
2407 kJ/kg. The heat transfer cocfficients arc 13,00o W/m2-°C on
the steam side and 200 W/m².°C on the water side. Determine
the length of the tube required to condense steam at a rate of
115 kg/h. Answer: 622 m
Steam, 40°C
115 kg/h
Cooling
water
Liquid water
Transcribed Image Text:17–74 Steam exiting the turbine of a steam power plant at 40°C is to be condensed in a large condenser by cooling water flowing through copper pipes (k = 386 W/m-°C) of inner diam- eter 1 cm and outer diameter 1.5 cm at an average temperature of 20°C. The heat of vaporization of water at 40°C is 2407 kJ/kg. The heat transfer cocfficients arc 13,00o W/m2-°C on the steam side and 200 W/m².°C on the water side. Determine the length of the tube required to condense steam at a rate of 115 kg/h. Answer: 622 m Steam, 40°C 115 kg/h Cooling water Liquid water
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