Density (Liquid Phase)

• Tait Equation: (Output details)

  d = d_sat / [1 - c×ln{(b + p) / (b + p_sat)}] ; where

  b = åB_i+1 × t ⁱ, c = åC_i+1 × t ⁱ, and t = (T-T_center)/100, where T_center is a constant parameter.
  Summations are from i = 0 to nTerms - 1, where nTerms is the number of B or C terms.
  d_sat = the density of the saturated liquid and p_sat = the saturation vapor pressure.

• Alternative 1: Huang-O'Connell Equation (Output details)

  The complete formulation used in TDE is given as equation 6 in the article:

  Diky, V.; O'Connell, J. P; Abildskov, J.; Kroenlein, K.; Frenkel. M.; Representation and Validation of Liquid Densities for Pure Compounds and Mixtures. J. Chem Eng. Data 2015, 60, 3545-3553.

  The quantities T*, V*, and C* are defined in equations 2 through 4 of the article. For a given temperature, the required reference pressure and reference density are the values at vapor saturation.