Page 25 - Separation process principles 2

Nomenclature xxix

RDC rotating-disk contactor scfh standard cubic feet per hour
RHS right-hand side of an equation scfm standard cubic feet per minute
R-K Redlich-Kwong equation of state stm steam
R-K-S Redlich-Kwong-Soave equation of state (same TSA temperature-swing adsorption
as S-R-K) UMD unimolecular diffusion
RO reverse osmosis UNIFAC UNIQUAC functional group activity
RTL raining-bucket contactor coefficients
R degrees Rankine UNIQUAC universal quasi-chemical theory
SC simultaneous-correction method VOC volatile organic compound
SG silica gel VPE vibrating-plate extractor
S.G. specific gravity vs versus
SR stiffness ratio; sum-rates method VSA vacuum-swing adsorption
S-R-K Soave-Redlich-Kwong equation of state wt weight
STP standard conditions of temperature and pres- Y Year
sure (usually 1 atm and either OC or 60F)
Yr Year
s second Frn micron = micrometer
scf standard cubic feet
scfd standard cubic feet per day

Mathematical Symbols

d differential In natural logarithm
e exponential function log logarithm to the base 10
erf(x) error function of partial differential
erfc(x) complementary error function of { ) delimiters for a function
x = 1 - erf(x) delimiters for absolute value
exp exponential function sum
f function product; pi = 3.1416
i imaginary part of a complex value