Question
Download Solution PDFThe dryness fraction is defined as ___________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
The dryness fraction is defined as the ratio of the mass of dry steam (vapour) to the combined mass of dry steam (vapour) & mass of liquid in the mixture. It is denoted by x.
\(Dryness\;fraction\;\left( x \right) = \frac{{mass\;of\;vapour\;\left( {{m_v}} \right)}}{{mass\;of\;vapour\;\left( {{m_v}} \right) + mass\;of\;liquid\;\left( {{m_l}} \right)}}\)
or,
x = Ratio of mass of dry steam to the total mass of wet steam
For saturated liquid x = 0
For saturated vapour = 1
The value of the dryness fraction lies between 0 and 1.
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