Benedict–Webb–Rubin equation

The equation of state of Benedict - Webb - Rubin is an equation of state for real gases. It is suitable for describing dense gases and represents a good compromise between simplicity and accuracy dar.

The original BWR equation

The BWRS equation

Professor Kenneth Starling from the University of Oklahoma, the modified BWR equation; the resulting BWRS equation contains the additional three constants, and added.

The individual symbols stand for the following sizes:

  • Vm - molar volume
  • T - temperature
  • P - pressure
  • R - universal gas constant
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