The Modification of the Martin-Hou Equation of State and its application
in Liquid-phase State
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.