Vapor quality

Vapor quality

Steam Engines use water vapor to drive pistons which effects work through movement. The quality of steam can be quantitatively described. Vapor quality is a quantitative description of the usefulness of a vapor to do work.

x_v=frac{v_m}{l_m + v_m}

where v_m is the vapor mass and l_m is the liquid mass.

References

* [http://72.14.253.104/search?q=cache:3m7Q4lCiolAJ:www.mines.edu/Academic/chemeng/courses/dcgn210/Handouts/Steam%2520quality.pdf+definition+of+vapor+quality&hl=en&ct=clnk&cd=1&gl=us]


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