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Dryness Fraction question 
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#1
Jun308, 07:53 AM

P: 1

With the use of Ammonia (R717) properties table, find the enthalpy of the refrigerant if the saturation temperature is 10C and the dryness fraction, x, is 0.9.
can anyone help me with this? i do not understand the use of dryness fraction Many thanks! 


#2
Jun308, 04:57 PM

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P: 21,880

Check one's text, but if 'dryness' is like steam quality, then it refers to the fraction of a saturated two phase system which is gas (vapor), as opposed to the other fraction which is liquid.
I assume dryness does not refer to the water content, which would lead to ammonium hydroxide, or 'aqua' ammonia. This might be of interest  http://www.tannerind.com/anhydrousammonia.html http://www.iifiir.org/en/doc/1055.pdf 


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