In-situ Measurements of Gas Species Concentrations.
Final technical rept. 15 Nov 76-15 Jun 78,
WRIGHT STATE UNIV DAYTON OHIO
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This report gives the results of in-situ measurements of the concentrations of a simulated fuel argon in a dump combustor flow field, obtained using a sampling probe - mass spectrometer system. These data demonstrate the improved fuel-air mixing which is realized by utilizing specialized flame holders. The existence of swirl in the combustor flow field has also been established by these studies. The work described herein required more elaborate interfacing of the mass spectrometer with a gas calibration system which was designed, fabricated and tested during this reporting period. Several preliminary experiments were conducted using this gas calibration system, for the purpose of devising suitable methodology for detecting specific gas species of interest in connection with future combustion experiments. Calibration data and coefficients were obtained for the gases, methane, carbon dioxide and oxygen, and calibration data for water and carbon monoxide is presently being obtained. Some preliminary work was also accomplished in monitoring nitric oxide at the parts-per-million level, using the existing mass spectrometric diagnostic system. Finally, several experiments were conducted in sampling gaseous species from a Bunsen burner flame employing various types of sampling probes. Author
- Test Facilities, Equipment and Methods
- Combustion and Ignition