C034 – Hydrocarbon Dew Point Calculation


This calculates the the hydrocarbon dew point and cricondentherm of a natural gas composition.


ASTM DS 4B – Physical Constants of Hydrocarbon and Non-Hydrocarbon Compounds – 2nd Edition (1991)

GPA TP-17 – Table of Physical Properties of Hydrocarbons for Extended Analysis of Natural Gases (1998)

The Properties of Gases and Liquids – 5th Edition (2001)

Equilibrium Constants form a Modified Redlich-Kwong Equation of State – G.Soave (1971)

A New Two Constant Equation of State (1976) – D.Peng, D.Robinson

Kelton calculation reference C034

FLOCALC calculation reference F047



  • Simple
  • Extended

This option is used to chose between a simple composition of common alkanes and non-organic compounds found in natural gas or an extended composition including a much wider set of components including common aromatics, naphthenes and sulphur compounds found in natural gas.

EOS Method

  • Peng-Robinson
  • Redlich-Kwong-Soave

This option is used to select whether the equation of state used in the solution of dew point temperature is the Peng-Robinson equation or the Redlich-Kwong-Soave equation.