An empirical equation for the enthalpy of vaporization of quantum liquids

VICTOR A. KUZ; ARIEL G. MEYRA; GUILLERMO ZARRAGOICOECHEA

THERMOCHIMICA ACTA

Elsevier

Lugar: Amsterdam; Año: 2004 vol. 423 p. 43 - 47

0040-6031

An empirical equation for the enthalpy of vaporization of quantum fluids is presented. Dimensionless analysis is used to  enthalpy of vaporizationas a function of temperature with a standard deviation of about 1 %. Experimental data represented in these variables show two different behaviour and exhibit different maximun values of enthalpy of vaporization one correspond to fluids with triple point the other to fluid having 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.