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Experimental Study of Hot Surface Ignition of Prevaporized Jet-A and Canola Methyl Ester

[+] Author Affiliations
Alex Spens, Jesse Harter, Ramkumar N. Parthasarathy, Subramanya R. Gollahalli

University of Oklahoma, Norman, OK

Paper No. IMECE2016-65663, pp. V06AT08A002; 15 pages
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 6A: Energy
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5058-9
  • Copyright © 2016 by ASME


In order to understand the ignition characteristics of liquid biofels such as canola methyl ester (CME), a set-up was built and tested. The rectangular combustion chamber (7 cm by 7 cm by 33cm high) had a viewing window in the front. Liquid fuel was injected into a stream of hot air, vaporized and mixed and the fuel/air mixture was passed through the combustion chamber vertically upward. The combustion chamber was filled with mixtures of various equivalence ratios. A 120V dryer heating element was mounted horizontally at the center of the chamber and served as the hot surface. The power input to the hot surface, the temperatures at different locations inside the chamber and images obtained from a high speed camera were recorded simultaneously. The ignition delay, ignition energy and flame velocities were documented over a range of equivalence ratios with Jet-A and CME as fuels. The ignition delay and ignition energy reached minimum values around equivalence ratios of 1.1–1.3. The ignition delay and ignition energy values for CME were comparable to those of Jet A and the flame velocities were 30% lower. This set-up can be used to measure relative ignition characteristics of liquid biofuels and blends of biofuels and petroleum fuels.

Copyright © 2016 by ASME
Topics: Ester , Ignition



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