Recent studies have indicated that small changes in concentration of higher hydrocarbons in natural gas can severely reduce ignition delay times of methane-based fuels. To increase the database of autoignition delay times for methane-based fuel mixtures characteristic of natural gas, experiments to measure autoignition delay times have been performed for a variety of gaseous fuels in an atmospheric flow reactor. Autoignition delay times were measured for pure fuels in air including methane, ethylene, ethane, and propane. The effect of higher hydrocarbon addition on methane-based fuel ignition delay was then investigated for fuel mixtures composed of methane/ethylene, methane/ethane, and methane/propane where methane composition varied from 25-95% by volume. Autoignition delay times were also measured for multi-component methane-based fuels composed of methane/ethane/propane and air. Finally the effect of CO 2 addition on methane autoignition was investigated. For all experiments, Φ ranged between 0.5 and 1.25 and temperatures ranged from 931 K to 1137 K. The measurements made in this study will benefit the combustion community by both providing valuable insight into the effects of additives on methane ignition as well as validation data for chemical kinetics mechanisms for predicting ignition of methane-based fuels.
|Commitee:||Sunderland, Peter, Zachariah, Michael|
|School:||University of Maryland, College Park|
|School Location:||United States -- Maryland|
|Source:||MAI 47/03M, Masters Abstracts International|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be