Property evaluations of hydrocarbon fuels under supercritical conditions based on cubic equation of state

Abstract

Thermophysical properties, such as density, specific heat, viscosity and thermal conductivity, vary sharply near critical point. To evaluate these properties of hydrocarbons accurately is crucial to the further research of fuel system. Comparison was made by the calculating program based on four widely used equations of state (EoS), and results indicated that calculations based on the Peng–Robinson (PR) equation of state achieve better prediction accuracy among the four equations of state. Due to the small computational amount and high accuracy, the evaluation method proposed in this paper can be implemented into practical application for the design of fuel system.