The condenser of a steam power plant operates at a pressure of 7.38 kPa (Tsat = 40°C). Steam at this pressure condenses on the outer surfaces of horizontal pipes through which cooling water circulates. The outer diameter of the pipes is 3 cm, and the outer surfaces of the pipes are maintained at 30°C. Determine the rate of condensation of steam per unit length of a horizontal pipe. The properties of water at the saturation temperature of 40°C are: hfg = 2407 × 10^3J/kg and ρv=0.05 kg/m3. The properties of liquid water at the film temperature: ρl = 994 kg/m3, Cpl =4178 J/kg°C, µl = 0.72 × 10^-3 kg/m.s, kl = 0.623 W/m°C Select one: a. 0.0026 kg/s b. 0.0046 kg/s c. 0.0016 kg/s d. 0.0036 kg/s

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The condenser of a steam power plant operates at a pressure of 7.38 kPa (Tsat = 40°C). Steam at this pressure condenses on the outer surfaces of horizontal pipes through which cooling water circulates. The outer diameter of the pipes is 3 cm, and the outer surfaces of the pipes are maintained at 30°C. Determine the rate of condensation of steam per unit length of a horizontal pipe. The properties of water at the saturation temperature of 40°C are: hfg = 2407 × 10^3J/kg and ρv=0.05 kg/m3. The properties of liquid water at the film temperature: ρl = 994 kg/m3, Cpl =4178 J/kg°C, µl = 0.72 × 10^-3 kg/m.s, kl = 0.623 W/m°C Select one: a. 0.0026 kg/s b. 0.0046 kg/s c. 0.0016 kg/s d. 0.0036 kg/s
The condenser of a steam power plant operates
at a pressure of 7.38 kPa (Tsat = 40°C). Steam
at this pressure condenses on the outer
surfaces of horizontal pipes through which
cooling water circulates. The outer diameter of
the pipes is 3 cm, and the outer surfaces of the
pipes are maintained at 30°C. Determine the
rate of condensation of steam per unit length of
a horizontal pipe. The properties of water at the
saturation temperature of 40°C are: hfg = 2407
× 10^3J/kg and pv=0.05 kg/m3. The properties
of liquid water at the film temperature: pl = 994
kg/m3, Cpl =4178 J/kg°C, µl = 0.72 × 10^-3 kg/
m.s, kl = 0.623 W/m°C
%3D
%3D
Select one:
a. 0.0026 kg/s
b. 0.0046 kg/s
c. 0.0016 kg/s
d. 0.0036 kg/s
Transcribed Image Text:The condenser of a steam power plant operates at a pressure of 7.38 kPa (Tsat = 40°C). Steam at this pressure condenses on the outer surfaces of horizontal pipes through which cooling water circulates. The outer diameter of the pipes is 3 cm, and the outer surfaces of the pipes are maintained at 30°C. Determine the rate of condensation of steam per unit length of a horizontal pipe. The properties of water at the saturation temperature of 40°C are: hfg = 2407 × 10^3J/kg and pv=0.05 kg/m3. The properties of liquid water at the film temperature: pl = 994 kg/m3, Cpl =4178 J/kg°C, µl = 0.72 × 10^-3 kg/ m.s, kl = 0.623 W/m°C %3D %3D Select one: a. 0.0026 kg/s b. 0.0046 kg/s c. 0.0016 kg/s d. 0.0036 kg/s
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