Review of the Thermodynamic Properties of Hydrogen Based on Existing Equations of State

• DOI: 10.1007/s10765-009-0699-7
• Publication Date: 2010-01-15T07:10:02Z
• Authors: N. Sakoda; K. Shindo; K. Shinzato; M. Kohno; Y. Takata; M. Fujii
• Keywords: Triple point; Boiling point; Speed of Sound; Specific heat

Currently available equations of state (EOSs) for hydrogen are reviewed, and the data for the critical point, normal boiling point, and triple point are summarized. Through comparisons of PVT, saturated properties, heat capacity, and speed of sound among the latest EOSs for hydrogen, their features are discussed. The proper use of the EOSs, including a consideration of the nuclear isomers (ortho- and parahydrogen), is of great importance, especially for saturated properties, heat capacity, and speed of sound because these properties are different between the nuclear isomers. The present review concludes with recommendations for use of the EOSs for hydrogen.