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RESEARCH PAPERS: Gas Turbines: Combustion and Fuels

Effects of Temperature on Formation of Insolubles in Aviation Fuels

[+] Author and Article Information
W. J. Balster, E. G. Jones

Innovative Scientific Solutions, Inc., 2786 Indian Ripple, Road, Dayton, OH 45440-3638

J. Eng. Gas Turbines Power 120(2), 289-293 (Apr 01, 1998) (5 pages) doi:10.1115/1.2818119 History: Received July 01, 1997; Online November 19, 2007

Abstract

Ten aviation turbine fuels (five Jet-A fuels, three JP-5, one JP-8, and one JPTS) were stressed at 185 and 225°C in a single-pass heat exchanger. On the basis of several criteria applied at 185°C, these fuels cover a broad thermal-stability range from lesser-quality fuels to the most stable JPTS fuel. Three of these fuels contain significant concentrations of dissolved metal (copper, >30 ppb). The surface and bulk insolubles formed from each fuel have been quantified using surface-carbon burnoff of tubing sections and of in-line filters. The total insolubles measured at 185 and 225°C fall in the range 0.3–7.5 μg/mL, and 0.1–2 μg/mL, respectively. In general, the greater the quantity of insolubles formed at 185°C, the greater its reduction at 225°C. Possible explanations for this effect are offered, and implications relative to understanding surface fouling are discussed.

Copyright © 1998 by The American Society of Mechanical Engineers
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