Steam Density

Steam density, abbreviated as \(\rho\)  (Greek symbol rho), has a higher density than water vapor, the higher the pressure the higher the steam density.

 

Steam Density FORMULA

\(\large{ \rho_s = \frac{P \; MW}{R^* \; T}  }\)

Where:

Units	English	Metric
\(\large{ \rho_s }\)  (Greek symbol rho) = steam density	\(\large{\frac{lbm}{ft^3}}\)	\(\large{\frac{kg}{m^3}}\)
\(\large{ MW }\) = molecular weight of water	\(\large{\frac{lbm}{lbmol}}\)	\(\large{\frac{kg}{kmol}}\)
\(\large{ P }\) = pressure	\(\large{\frac{lbf}{in^2}}\)	\(\large{Pa}\)
\(\large{ T }\) = temperature	\(\large{F}\)	\(\large{K}\)
\(\large{ R^* }\) = universal gas constant	\(\large{ \frac{lbf-ft}{lbmol-R} }\)	\(\large{ \frac{J}{kmol-K} }\)