Steam Quality

on . Posted in Thermodynamics

Steam quality or steam dryness is the porportion of saturated steam (vapor) in a saturated condensate (liquid) / steam (vapor) mixture.  A steam quality of 0 indicates 100% liquid (condensate), a quality of 100 indicates 100% steam.  One (1) pound of steam with 95% steam and 5% of liquid has a steam quality of 0.95.

The measuremenrs needed to obtain a steam quality measurement are temperature, pressure, and the entrapment of liquid content.  There is a proportional relationship between temperature and pressure in saturated steam, as the temperature rises so does the pressure.


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Tags: Steam Equations