Reduced Specific Volume

Reduced specific volume, abbreviated as \(\upsilon_r \) (Greek symbol upsilon), also called pseudo-reduced specific volume, of a fluid is ratio of the specific volume of a substance's critical pressure and temperature.

 

Reduced Specific Volume formula
\(\large{  \upsilon_r = \frac {\upsilon \; p_c}{R \; T_c}   }\)
Symbol	English	Metric
\(\large{ \upsilon_r }\)  (Greek symbol upsilon) = reduced specific volume	\(\large{\frac{ft^3}{lbm}}\)	\(\large{\frac{m^3}{kg}}\)
\(\large{ p_c }\) = critical pressure	\(\large{\frac{lbf}{in^2}}\)	\(\large{Pa}\)
\(\large{ T_c }\) = critical temperature	\(\large{ F }\)	\(\large{ K }\)
\(\large{ \upsilon}\)  (Greek symbol upsilon) = specific volume	\(\large{\frac{ft^3}{lbm}}\)	\(\large{\frac{m^3}{kg}}\)
\(\large{ R }\) = universal gas constant	\(\large{ \frac{lbf-ft}{lbmol-R} }\)	\(\large{ \frac{J}{kmol-K} }\)