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Effect of scrubbing efficiency on fuel scrubbing inerting for aircraft fuel tanks

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

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 19 November 2018

Issue publication date: 6 March 2019

Abstract

Purpose

This paper aims to improve the previous fuel scrubbing model and find out the relationship between bubble diameter and scrubbing efficiency (ƞ).

Design/methodology/approach

A fuel tank scrubbing test bench was established to verify the accuracy of this model. Ullage and dissolved oxygen concentration were measured, and images of bubble size and distribution were collected and analyzed using image analysis software.

Findings

The bubble diameter has a great influence on ullage and dissolved oxygen concentration during the fuel scrubbing process. The scrubbing efficiency (ƞ) has an exponential relationship with bubble diameter and decreases rapidly as the bubble diameter increases.

Practical implications

The variation of the ullage and dissolved oxygen concentration predicted by this model is more accurate than that of the previous model. In addition, the study of bubble size can provide a guidance for the design of fuel scrubber.

Originality/value

This study not only improves the previous fuel scrubbing model but also develops a method to calculate scrubbing efficiency (ƞ) based on bubble diameter. In addition, a series of tests and analyses were conducted, including numerical calculation, experiment and image analysis.

Keywords

Citation

Shao, L., Feng, S., Li, C., Liu, W. and Huang, X. (2018), "Effect of scrubbing efficiency on fuel scrubbing inerting for aircraft fuel tanks", Aircraft Engineering and Aerospace Technology, Vol. 91 No. 2, pp. 225-234. https://doi.org/10.1108/AEAT-10-2017-0215

Publisher

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Emerald Publishing Limited

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