Answered: Steam enters the condenser of a steam…

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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Steam enters the condenser of a steam power plant at 20 kPa and a
quality of 90 percent with a mass flow rate of 20,000 kg/h. It is to be cooled by water from a
nearby river by circulating the water through the tubes within the condenser. To prevent
thermal pollution, the river water is not allowed to experience a temperature rise above
10°C. If the steam is to leave the condenser as saturated liquid at 20 kPa,

Determine
(a) the mass flow rate of the cooling water required, and
(b) rate of heat loss from the steam.

Please attempt (a) then (b)

m3 = 20,000 kg/h
P3 = 20 kPa
*3 = 0.9
Steam
P₁ = 20 kPa
Sat. liquid
Water
T, +10°C

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Should the final answer for part (b) be -ve as heat is exiting?

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