Technical Reports

The Calculation of the Thermodynamic Properties of Propane, Propylene, N-Butane, and Ethylene

  • 01
  • Apr
  • 1980
AUTHOR: Sallet and Palmer
OFFICE: RPD
REPORT NUMBER: DOT/FRA/ORD-76/300
SUBJECT: Hazardous Materials
ABSTRACT: The thermodynamic properties of propane, propylene, n-butane and ethylene were calculated and are presented in tables. The tables list the values of the specific volume, the enthalpy, then entropy, the specific heat at constant pressure, the specific heat at constant volume and the sonic velocity of the four hydro-carbons in a temperature and pressure range which can be encountered when these commodities are shipped by rail tank cars. This includes subcooled states, saturation equilibrium states and superheated states. The computer program with which the tables were generated is discussed in detail and a complete listing of the program is given. The underlying thermodynamic theory and the equation of state used in the development of the presented data was given in Report No. FRA-ORD 76/299 and is not repeated. The present report is user-oriented in that it gives extensive tables and a complete listing of the computer program with which these tables were generated.

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