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Steam Condenser

by ashutoshd
Tags: condenser, steam
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ashutoshd
#1
Oct17-10, 07:15 AM
P: 5
I am a 2nd year mech engg student. I have a basic doubt in condensers. The steam from turbine exhaust enters the condenser & gets condensed during which its specific volume decreases resulting in formation of partial vacuum. Now according to rankine cycle the process in a condenser is a isobaric & isothermal one(shown by a horizontal straight line coinciding with lower isobar in T-S diag) so if pressure remains constant how is vacuum formed during condensation? I mean shouldnt the pressure decrease too?
This could be a silly question but i have scouted the web but couldnt find any page dealing with this in detail apart from cursory explanation. Any urls explaining this in detail are welcome.
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russ_watters
#2
Oct17-10, 08:27 AM
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P: 22,294
Why do you think a vacuum forms?
ashutoshd
#3
Oct17-10, 10:29 AM
P: 5
I read it in some books and many places on the net that a partial vacuum is created by virtue of great difference in specific volumes of steam & the condensed water. Is it wrong?


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