A Theoretical Investigation into the Comparative Adsorption Between Dissolved Oxygen and Oxygenate Species on Zeolite 3.7 Å During Aviation Fuel Treatment for Thermal Stability Improvement

2021 ◽  
Author(s):  
Ehsan Alborzi ◽  
Irina Sergeyevna Fliagina ◽  
Detlev Conrad Mielczarek ◽  
Simon Blakey ◽  
Mohamed Pourkashanian
Keyword(s):  
Thermal Stability ◽  
Dissolved Oxygen ◽  
Theoretical Investigation ◽  
Aviation Fuel ◽  
Fuel Treatment

scholarly journals Gas–liquid mass transfer characteristics of aviation fuel scrubbing in an aircraft fuel tank

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Li Chaoyue ◽  
Feng Shiyu ◽  
Xu Lei ◽  
Peng Xiaotian ◽  
Yan Yan
Keyword(s):  
Mass Transfer ◽  
Dissolved Oxygen ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Oxygen Concentration ◽  
Gas Holdup ◽  
Aviation Fuel ◽  
Volumetric Mass Transfer Coefficient ◽  
Dissolved Oxygen Concentration ◽  
Liquid Mass Transfer

AbstractDissolved oxygen evolving from aviation fuel leads to an increase in the oxygen concentration in an inert aircraft fuel tank ullage that may increase the flammability of the tank. Aviation fuel scrubbing with nitrogen-enriched air (NEA) can largely reduce the amount of dissolved oxygen and counteract the adverse effect of oxygen evolution. The gas–liquid mass transfer characteristics of aviation fuel scrubbing are investigated using the computational fluid dynamics method, which is verified experimentally. The effects of the NEA bubble diameter, NEA superficial velocity and fuel load on oxygen transfer between NEA and aviation fuel are discussed. Findings from this work indicate that the descent rate of the average dissolved oxygen concentration, gas holdup distribution and volumetric mass transfer coefficient increase with increasing NEA superficial velocity but decrease with increasing bubble diameter and fuel load. When the bubble diameter varies from 1 to 4 mm, the maximum change of descent rate of dissolved oxygen concentration is 18.46%, the gas holdup is 8.73%, the oxygen volumetric mass transfer coefficient is 81.45%. When the NEA superficial velocities varies from 0.04 to 0.10 m/s, the maximum change of descent rate of dissolved oxygen concentration is 146.77%, the gas holdup is 77.14%, the oxygen volumetric mass transfer coefficient is 175.38%. When the fuel load varies from 35 to 80%, the maximum change of descent rate of dissolved oxygen concentration is 21.15%, the gas holdup is 49.54%, the oxygen volumetric mass transfer coefficient is 44.57%. These results provide a better understanding of the gas and liquid mass transfer characteristics of aviation fuel scrubbing in aircraft fuel tanks and can promote the optimal design of fuel scrubbing inerting systems.

scholarly journals The Thermal Stability of Aviation Fuel

1984 ◽  
Author(s):  
J. S. Mills ◽  
F. R. Edwards
Keyword(s):  
Thermal Stability ◽  
Research Tool ◽  
Aviation Fuel ◽  
Engine Oil ◽  
Thermally Stable ◽  
Fuel System ◽  
Flow Rates ◽  
Aircraft Fuel ◽  
Oil Cooler ◽  
Thermal Stability Of

The propensity of aviation turbine fuels to produce deposits in the oil-cooler and filter sections of aircraft fuel systems has been examined using a rig that simulates the fuel system of an aircraft and which employs realistic flow rates. All the fuels examined were found to be thermally stable up to temperatures in excess of those currently attained in engine oil coolers. Comparison with results obtained with the JFTOT indicates that this is not suited for use as a research tool.

scholarly journals Effect of Reactive Sulfur Removal by Activated Carbon on Aviation Fuel Thermal Stability

2020 ◽  
Vol 34 (6) ◽  
pp. 6780-6790 ◽  
Author(s):  
Ehsan Alborzi ◽  
Christopher M. Parks ◽  
Phil Gadsby ◽  
Abdolkarim Sheikhansari ◽  
Simon G. Blakey ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Activated Carbon ◽  
Sulfur Removal ◽  
Aviation Fuel

Theoretical Investigation on the Thermal Stability of Hollow Gold Nanoparticles

2009 ◽  
Vol 113 (47) ◽  
pp. 20193-20197 ◽  
Author(s):  
Luyun Jiang ◽  
Xing Yin ◽  
Jianwei Zhao ◽  
Hongmei Liu ◽  
Yunhong Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Gold Nanoparticles ◽  
Theoretical Investigation ◽  
Hollow Gold Nanoparticles ◽  
Thermal Stability Of

scholarly journals Thermal Stability Concerns of Navy Aviation Fuel

1986 ◽  
Author(s):  
C. A. Moses ◽  
M. W. Shayeson ◽  
P. A. Karpovich
Keyword(s):  
Thermal Stability ◽  
Air Force ◽  
Engine Performance ◽  
Aviation Fuel ◽  
Fuel Quality ◽  
Performance Requirements ◽  
The Impact ◽  
Thermal Stability Of ◽  
The U.S

The U.S. Navy’s concerns about the thermal stability of aviation fuel stem from a combination of increased performance requirements of engines and potential degradation in fuel quality. The results of recent atomizer fouling tests with hot fuel are presented. These are combined with similar results from Air Force programs and analyzed with respect to the impact on engine performance and reliability.

Theoretical Investigation of the Thermal Stability of Nanoscale Layered Systems

1998 ◽  
Vol 294-296 ◽  
pp. 613-616 ◽  
Author(s):  
M. Bobeth ◽  
M. Hentschel ◽  
G. Diener ◽  
W. Pompe ◽  
A. Ullrich
Keyword(s):  
Thermal Stability ◽  
Theoretical Investigation ◽  
Layered Systems ◽  
Thermal Stability Of
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