Steam at a rate of 10 g/s exiting the turbine of a power plant at 100 C is to be condensed in a large condenser as shown below. The cooling of steam is achieved by contacting the steam with cooling water at average temperature of 45 C carried in copper pipes with inner diameter 1 cm and outer diameter 1.5 cm. The thermal conductivity of copper is 401 W/mK. The heat of vaporization of water at 100 C is 2257 kJ/kg. The heat transfer coefficients for the copper pipe are 1300 W/m2K and 100 W/m2K on the steam side and cooling water side respectively. What length of copper tube is required?

Steam at a rate of 10 g/s exiting the turbine of a power plant at 100 C is to be condensed in a large condenser as shown below. The cooling of steam is achieved by contacting the steam with cooling water at average temperature of 45 C carried in copper pipes with inner diameter 1 cm and outer diameter 1.5 cm. The thermal conductivity of copper is 401 W/mK. The heat of vaporization of water at 100 C is 2257 kJ/kg. The heat transfer coefficients for the copper pipe are 1300 W/m2K and 100 W/m2K on the steam side and cooling water side respectively. What length of copper tube is required?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Option d is 200

Steam at a rate of 10 g/s exiting the turbine of a power
plant at 100 C is to be condensed in a large
condenser as shown below. The cooling of steam is
achieved by contacting the steam with cooling water
at average temperature of 45 C carried in copper
pipes with inner diameter 1 cm and outer diameter 1.5
cm. The thermal conductivity of copper is 401 W/mK.
The heat of vaporization of water at 100 C is 2257
kJ/kg. The heat transfer coefficients for the copper
pipe are 1300 W/m2K and 100 W/m2K on the steam
side and cooling water side respectively. What length
of copper tube is required?
Steam
up
Loque Liquid water
a. 140 m
b. 80 m
c. 60 m
Cooling
water

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