Comparative Study on the Performance of Correlations of the Enthalpy of Vaporization for Pure Substance Refrigerants

  • Park Kyoung Kuhn (School of Mechanical and Automotive Engineering, Kookmin University)
  • Published : 2004.12.01


A few commonly used correlation equations of the enthalpy of vaporization are reviewed and a new three-parameter correlation equation is proposed. Performance of the pro­posed equation is examined using the data listed in the ASHRAE table for 22 pure substance refrigerants. The new equation yields an average absolute deviation of $0.14\%$ for 22 refrig­erants, which is better than those of other equations, such as Xiang $(0.18\%),$ Majer-Svoboda­Pick $(0.18\%),$ and Somayajulu equation $(0.23\%)$.



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