Universal behavior of the enthalpy of vaporization: an empirical equation |
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Institution: | 1. Department of Mechanical Engineering, Faculty of Engineering, Beirut Arab University, Lebanon;2. Department of Mechanical Engineering, Faculty of Engineering, Alexandria University, Egypt |
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Abstract: | Values of the enthalpy of vaporization from the critical to the triple point are correlated by an empirical equation. The equation contains parameters which characterize each substance: the critical and triple point temperatures and the enthalpy of vaporization at the triple point, and for all substances the same universal critical ratio. This work suggests that a wide class of fluids with the exception of quantal liquids shows an universal behavior along the coexistence curve. |
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