ABSTRACT:In
order to
further
improve the calculation precision and get a simpler algorithm, the
Martin-Hou Equation of State is modified after rigorous data analysis
data in different cases. A new
revision
factor h ,
a
function of critical compression factor, is introduced into the novel
M-H EOS to reduce
the
deviation
of molar volume calculated in liquid-phase state. According to
the
new
derivation
process
of the EOS, only
a
few number of physical properties are needed to
characterize
a given substance, which greatly reduced the difficulty of solution of
the EOS.
In
order to verify the generality and the calculation precision in
liquid-phase state, the novel M-H EOS has been applied to six
representative substances:
argon,
methane, nitrogen, propane, benzene and water. Compared with the
previous M-H EOS in liquid-phase state, the novel M-H EOS obviously
reduces the deviation and can universally be applied
to
most kinds of substances.
Keywords: the M-H EOS, liquid phase, precision,
derivation,
characteristic constant.