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Experimental study of the solubility and diffusivity of CO2 and O2 in RP-3 jet fuel

Chaoyue Li (Key Laboratory of Aircraft Environment Control and Life Support, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Shiyu Feng (Key Laboratory of Aircraft Environment Control and Life Support, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Lei Shao (Key Laboratory of Aircraft Environment Control and Life Support, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Jun Pan (Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing Engineering Institute of Aircraft Systems, Aviation Industry Corporation of China, Shenyang, China)
Weihua Liu (Key Laboratory of Aircraft Environment Control and Life Support, MIIT, Nanjing University of Aeronautics and Astronautics, Nanjing, China)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 8 January 2019

Issue publication date: 6 March 2019

161

Abstract

Purpose

This study aims to get the essential data of the solubility and diffusion coefficient of gas in jet fuel for appropriately designing a kind of on-board inert gas generation system.

Design/methodology/approach

A test apparatus based on pressure–decay method was constructed to measure solubility and diffusion coefficient of gas in liquid. The test apparatus and method were verified via measurement of solubility and diffusion of CO2 in the pure water.

Findings

The solubility of CO2 and O2 in RP-3 jet fuel with the temperature from 253 to 313 K under three various pressures were measured and compared with theoretical value calculated by a relative density method provided in the standard of ASTM D2780-92, and the deviation is within 10 per cent. The diffusion coefficients of CO2 and O2 in RP-3 jet fuel are determined by monitoring the gas pressure in a hermetic cell versus time with the temperature from 253 to 333 K. The measured diffusivity-temperature relation can be well fitted through the Arrhenius equation for engineering applications. The obtained correlation can be used to predict the diffusion coefficient of CO2 and O2 in RP-3 jet fuel under a wide temperature range.

Practical implications

The semi-empirical correlation of solubility and diffusion coefficient in RP-3 jet fuel obtained from the experimental data could be used to support the design of an inert gas generation system.

Originality/value

There are no essential data of solubility and diffusion of CO2 and O2 in RP-3 jet fuel; therefore, it is fatal if the quantity and rate of mass transfer of CO2 and O2 in RP-3 jet fuel must be assessed, e.g. during the design of green on-board inert gas generation system.

Keywords

Acknowledgements

This work was supported by Aeronautical Science Foundation of China (20132852040), Postgraduate Research and Practice Innovation Program of Jiangsu Province (KYCX17_0279), Aviation Industry Corporation of China Technology Innovation Fund for Fundamental Research (2014D60931R), Funding of Ministry of Industry and Information Technology for Civil aircraft ([2016]37), Jiangsu Innovation Program for Graduate Education (KYLX15_0231), The Fundamental Research Funds for the Central Universities and Priority Academic Program Development of Jiangsu Higher Education Institutions.

Citation

Li, C., Feng, S., Shao, L., Pan, J. and Liu, W. (2018), "Experimental study of the solubility and diffusivity of CO2 and O2 in RP-3 jet fuel", Aircraft Engineering and Aerospace Technology, Vol. 91 No. 2, pp. 216-224. https://doi.org/10.1108/AEAT-05-2017-0133

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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