Four series of tests were performed in an accelerated deposition test facility to study the independent effects of particle size, gas temperature, and metal temperature on ash deposits from two candidate power turbine synfuels (coal and petcoke). The facility matches the gas temperature and velocity of modern first stage high pressure turbine vanes while accelerating the deposition process. Particle size was found to have a significant effect on capture efficiency with larger particles causing significant thermal barrier coating (TBC) spallation during a 4 h accelerated test. In the second series of tests, particle deposition rate was found to decrease with decreasing gas temperature. The threshold gas temperature for deposition was approximately . In the third and fourth test series, impingement cooling was applied to the back side of the target coupon to simulate internal vane cooling. Capture efficiency was reduced with increasing mass flow of coolant air; however, at low levels of cooling, the deposits attached more tenaciously to the TBC layer. Postexposure analyses of the third test series (scanning electron microscopy and X-ray spectroscopy) show decreasing TBC damage with increased cooling levels.
Skip Nav Destination
Article navigation
September 2008
Research Papers
Effects of Temperature and Particle Size on Deposition in Land Based Turbines
Jared M. Crosby,
Jared M. Crosby
Department of Mechanical Engineering,
Brigham Young University
, Provo, UT 84602
Search for other works by this author on:
Scott Lewis,
Scott Lewis
Department of Mechanical Engineering,
Brigham Young University
, Provo, UT 84602
Search for other works by this author on:
Jeffrey P. Bons,
Jeffrey P. Bons
Department of Mechanical Engineering,
Brigham Young University
, Provo, UT 84602
Search for other works by this author on:
Weiguo Ai,
Weiguo Ai
Department of Chemical Engineering,
Brigham Young University
, Provo, UT 84602
Search for other works by this author on:
Thomas H. Fletcher
Thomas H. Fletcher
Department of Chemical Engineering,
Brigham Young University
, Provo, UT 84602
Search for other works by this author on:
Jared M. Crosby
Department of Mechanical Engineering,
Brigham Young University
, Provo, UT 84602
Scott Lewis
Department of Mechanical Engineering,
Brigham Young University
, Provo, UT 84602
Jeffrey P. Bons
Department of Mechanical Engineering,
Brigham Young University
, Provo, UT 84602
Weiguo Ai
Department of Chemical Engineering,
Brigham Young University
, Provo, UT 84602
Thomas H. Fletcher
Department of Chemical Engineering,
Brigham Young University
, Provo, UT 84602J. Eng. Gas Turbines Power. Sep 2008, 130(5): 051503 (9 pages)
Published Online: June 13, 2008
Article history
Received:
September 10, 2007
Revised:
December 13, 2007
Published:
June 13, 2008
Citation
Crosby, J. M., Lewis, S., Bons, J. P., Ai, W., and Fletcher, T. H. (June 13, 2008). "Effects of Temperature and Particle Size on Deposition in Land Based Turbines." ASME. J. Eng. Gas Turbines Power. September 2008; 130(5): 051503. https://doi.org/10.1115/1.2903901
Download citation file:
Get Email Alerts
Blade Excitation Alleviation of a Nozzleless Radial Turbine by Casing Treatment Based on Reduced Order Mode
J. Eng. Gas Turbines Power
Design And Testing of a Compact, Reverse Brayton Cycle, Air (R729) Cooling Machine
J. Eng. Gas Turbines Power
Experimental Study on Liquid Jet Trajectory in Cross Flow of Swirling Air at Elevated Pressure Condition
J. Eng. Gas Turbines Power
Related Articles
Deposition Near Film Cooling Holes on a High Pressure Turbine Vane
J. Turbomach (July,2012)
Effects of Surface Deposition, Hole Blockage, and Thermal Barrier Coating Spallation on Vane Endwall Film Cooling
J. Turbomach (July,2007)
Effect of Hole Spacing on Deposition of Fine Coal Flyash Near Film Cooling Holes
J. Turbomach (July,2012)
Effects of Syngas Ash Particle Size on Deposition and Erosion of a Film Cooled Leading Edge
J. Turbomach (January,2011)
Related Chapters
Control and Operational Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Thermodynamic Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration