Saturated liquid water is completely vaporized at 200 oC inside the tubes of a shell-and-tube heat exchanger that uses hot exhaust gases to vaporize the water. The hot gases enters the shell at 9000C at a flow rate of 22 kg/s. Assuming an overall heat transfer coefficient of 1000 W/m2K and heat exchanger surface area of 40 m2, determine the rate at which the water is vaporized. The latent heat of vaporization of water is hfg=1940 kJ/kg. The specific heat of the exhaust gas is cp,h=1200 J/kg.K. Select one: a. 2.5 kg/s b. 7.4 kg/s c. 11.3 kg/s d. 0.75 kg/s

Saturated liquid water is completely vaporized at 200 oC inside the tubes of a shell-and-tube heat exchanger that uses hot exhaust gases to vaporize the water. The hot gases enters the shell at 9000C at a flow rate of 22 kg/s. Assuming an overall heat transfer coefficient of 1000 W/m2K and heat exchanger surface area of 40 m2, determine the rate at which the water is vaporized. The latent heat of vaporization of water is hfg=1940 kJ/kg. The specific heat of the exhaust gas is cp,h=1200 J/kg.K. Select one: a. 2.5 kg/s b. 7.4 kg/s c. 11.3 kg/s d. 0.75 kg/s

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

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Saturated liquid water is completely
vaporized at 200 oC inside the tubes of a
shell-and-tube heat exchanger that uses hot
exhaust gases to vaporize the water. The hot
gases enters the shell at 9000C at a flow rate
of 22 kg/s. Assuming an overall heat transfer
coefficient of 1000 W/m2K and heat
exchanger surface area of 40 m2, determine
the rate at which the water is vaporized. The
latent heat of vaporization of water is
hfg=1940 kJ/kg. The specific heat of the
exhaust gas is cp,h=D1200 J/kg.K.
Select one:
a. 2.5 kg/s
b. 7.4 kg/s
c. 11.3 kg/s
d. 0.75 kg/s

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