화학공학소재연구정보센터
Thermochimica Acta, Vol.423, No.1-2, 43-47, 2004
An empirical equation for the enthalpy of vaporization of quantum liquids
An empirical equation for the enthalpy of vaporization of quantum fluids is presented. Dimensionless analysis is used to define enthalpy of vaporization as a function of temperature with a standard deviation of about M. Experimental data represented in these variables show two different behaviours and exhibit different maximum values of the enthalpy of vaporization, one corresponding to fluids with a triple point and the other to fluids having a lambda point. None of the existing empirical equations are able to describe this fact. Also enthalpy of vaporization of helium-3, n-deuterium and n-tritium are estimated. (C) 2004 Elsevier B.V. All rights reserved.