An Accurate Model for Estimating H 2 Solubility in Pure Water and Aqueous NaCl Solutions

Zhiwei Zhu, Yuncheng Cao, Zihan Zheng and Duofu Chen
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Zhiwei Zhu: Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
Yuncheng Cao: Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
Zihan Zheng: Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
Duofu Chen: Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China

Energies, 2022, vol. 15, issue 14, 1-15

Abstract: By employing a specific particle interaction theory and a high-precision equation of states for the liquid and vapor phases of H 2 , respectively, a new H 2 solubility model in pure water and aqueous NaCl solutions is proposed in this study. The model established by fitting the experimental data of H 2 solubility can be used to estimate H 2 solubility in pure water at temperatures and pressures of 273.15–423.15 K and 0–1100 bar, respectively, and in salt solutions (NaCl concentration = 0–5 mol/kg) at temperatures and pressures of 273.15–373.15 K and 0–230 bar, respectively. By adopting the theory of liquid electrolyte solutions, the model can also be used to predict H 2 solubility in seawater without fitting the experimental data of a seawater system. Within or close to experimental data uncertainty, the mean absolute percentage error between the model-predicted and experimentally obtained H 2 solubilities was less than 1.14%.

Keywords: hydrogen; solubility; numerical simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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