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Old May 21st 2014, 01:55 PM   #1
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Actual Total enthalpy Basic Problem

Hello, I sat an exam today and the following question came up:


Saturated steam is at a pressure of 6 bar g and has a dryness fraction of 94%. Determine the Actual total enthalpy and Actual specific volume.


Given:
Actual total enthalpy = hf + hfgX
Actual specific volume = VgX
No problem right? Thing is, the lecturer had actually given the same calculation in notes he handed out months ago, its in the reply to this message.

For Actual total enthalpy i got:
670.56 + (2086.3*0.94) = 2631.682


If someone could do the calculation and i can compare the answers i have that would be a great help. thanks in advance

Last edited by Gav33; May 21st 2014 at 04:14 PM.
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Old May 21st 2014, 01:59 PM   #2
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Whereas this was given as an example earlier in the year:

Actual total enthalpy = 697.5 + (2066.0 * 0.94) = 2639.5
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Old May 21st 2014, 03:01 PM   #3
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Crap i think im wrong...i was looking up 0.6 and i should have been looking at 0.7...right?
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