Empirical correlations for density, viscosity, and thermal conductivity of pure gaseous hydrogen

Abstract

This study addresses the critical need for reliable tools to calculate the thermophysical properties of pure gaseous hydrogen across a wide range of temperatures and pressures. This work proposes accurate and user-friendly functions of temperature and pressure based on a meticulous analysis of an extensive dataset sourced from the open literature.These functions are designed to predict volumetric, transport, and derived properties.The dataset comprises 3,396 data points for density, 940 data points for viscosity, and 2,287 data points for thermal conductivity, covering an extensive temperature and pressure spectrum. For density, the data covers a temperature range from 97 to 873 K and pressures ranging from atmospheric to 1.983 GPa. Viscosity data span temperatures from 100 to 1,100 K and pressures from atmospheric to 217 MPa, while thermal conductivity data extend from 98 to 873 K, with pressures ranging from atmospheric to 99 MPa. The data have been meticulously curated to ensure reliability and representativeness. The proposed correlations exhibit exceptional accuracy, as evidenced by the Absolute Average Deviation results: 0.66% for density, 1.21% for viscosity, and 1.65% for thermal conductivity. To ensure the reliability, the correlations were validated against data from REFPROP 10. In addition to the absolute average deviations, maximum absolute deviations, Coefficients of Determination, and the Percentage of Accuracy-Precision are also included. The proposed correlations have been formulated and validated for a range of key parameters, including isothermal compressibility, volume expansion, fugacity coefficient, enthalpy, entropy, Helmholtz energy, Gibbs energy, adiabatic bulk modulus, speed of sound, as well as kinematic viscosity and thermal diffusivity.

Document Type: Original article

Cited as: Heidaryan, E., Aryana, S. A. Empirical correlations for density, viscosity, and thermal conductivity of pure gaseous hydrogen. Advances in Geo-Energy Research, 2024, 11(1): 54-73. https://doi.org/10.46690/ager.2024.01.06

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