Temperature Effects on Fuel Thermal Stability

[+] Author and Article Information
J. S. Chin, A. H. Lefebvre

Thermal Science and Propulsion Center, Purdue University, West Lafayette, IN 47907

F. T.-Y. Sun

Gas Turbine Fuel Systems Division, Parker Hannifin Corp., Cleveland, OH 44112

J. Eng. Gas Turbines Power 114(2), 353-358 (Apr 01, 1992) (6 pages) doi:10.1115/1.2906596 History: Received February 19, 1991; Online April 24, 2008


The thermal stability characteristics of four kerosine-type fuels are examined using a heated-tube apparatus that allows independent control of fuel pressure, fuel temperature, tube-wall temperature, and fuel flow rate. It is a closed loop system, and fuel flows through the heated tube for periods ranging from 6 to 22 h. The deposition rates of carbon on the tube walls are measured by weighing the tube before and after each test. The results obtained show that tube-wall and fuel temperatures both have a marked influence on deposition rates, the impact of fuel temperature being stronger than that of wall temperature. It is also found that deposition rates increase continuously with increases in tube-wall temperature. This finding contradicts the results of previous studies, which had led to the conclusion that deposition rates increase with increase in wall temperature up to a certain value, beyond which any further increase in wall temperature causes the deposition rate to decline.

Copyright © 1992 by The American Society of Mechanical Engineers
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