X is called the " dryness fraction " of the steam.
2.
If the dryness fraction of steam falls below 0.88, the erosion and corrosion of blades can also take place.
3.
:: : : Dryness fraction represents the " quality " of steam for the purpose of doing work or supplying heat.
4.
Also, turbines are run with high-quality steam : either superheated ( dry ) steam, or saturated steam with a high dryness fraction.
5.
Lines of constant " dryness fraction " ( " x " ), sometimes called the " quality ", are drawn in the wet region and lines of constant temperature are drawn in the superheated region . " X " gives the fraction ( by mass ) of gaseous substance in the wet region, the remainder being colloidall liquid droplets.
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