Solubilities of CO2, O2 and N2 in rocket propellant 5 under low pressure

Chaoyue Li; Shiyu Feng; Lei Xu; Xiaotian Peng; Weihua Liu

doi:10.1038/s41598-022-08340-8

Solubilities of CO₂, O₂ and N₂ in rocket propellant 5 under low pressure

Sci Rep. 2022 Mar 16;12(1):4533. doi: 10.1038/s41598-022-08340-8.

Authors

Chaoyue Li^{1

2}, Shiyu Feng³, Lei Xu¹, Xiaotian Peng², Weihua Liu²

Affiliations

¹ School of Mechanical and Electrical Engineering, Jinling Institute of Technology, Nanjing, 211169, China.
² School of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
³ School of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China. shiyuf@nuaa.edu.cn.

Abstract

The static method of isochoric saturation was used to measure the solubilities of CO₂, O₂ and N₂ in rocket propellant 5 (RP5) at temperatures ranging from 253.15 to 323.15 K in 10 K intervals and pressures ranging from 0 to 120 kPa. The measurement accuracy of the constructed experimental setup was verified by measuring the solubility of CO₂ in water. The relative expanded uncertainty (k = 2) in the solubility data was less than 4.0%. The solubilities of CO₂, O₂ and N₂ in RP5 increased with pressure. As the temperature increased, the solubility decreased for CO₂ solubility and increased for O₂ and N₂. Henry's constants for the three gases in RP5 decreased over the experimental temperature and pressure ranges in the order of N₂ > O₂ > CO₂. The measured solubilities of CO₂, O₂ and N₂ could be fitted with a modified Krichevsky-Kasarnovsky equation, and the maximum deviation between the measured and calculated data was less than 8.04%, 7.03% and 6.18%, respectively.

Abstract

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