Answered: Water, initially saturated vapor at 4…

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

Water, initially saturated vapor at 4 bar, fills a closed, rigid container. The water is heated until its temperature is 360°C.

For the water, determine the heat transfer, in kJ per kg of water.

Kinetic and potential energy effects can be ignored.

Expert Solution

Step 1

Given Data :

Pressure of saturated vapor = 4 bar

Temperature of water T₂= 360 °C.

Now, taking the properties for water as working fluid from the steam table

Taking the properties from saturated water pressure table,

At Pressure 4 Bar,

$I n t e r n a l E n e r g y U_{1} = 2553.1 K J / K g s p e c i f i c v o l u m e v_{1} = 0.4624 m^{3} / K g$

Given container is rigid and close so its constant volume process

$v_{2} = v_{1} = 0.4624 m^{3} / K g$

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