| OCR Text |
Show effects are minimized. Continuous on-line gas analyses 4re performed during a run using paramagnetic (02), nondispersive-infrared (CH/,CO,C02,NO) and -ultraviolet (N0?), chemiluminescent (NO ), and chromatographic (N?, HC) detection. 3.3.3. Radical Species Composition Conventional optical techniques [16,19,20] are used to measure the concentrations of important transient species in the flame gases. These are primarily based on the principle of ultraviolet absorption. The key free radical species for C-H-0 combustion efficiency determinations is OH [16]. NO pollution kinetics will be monitored by following NH^, NH2, NH, and NO concentrations [19,20]. Although the thrust of this program is to finesse the reduction and analysis of straightforwardly acquired data, a minor effort will be devoted toward the development of an optical absorption technique for the H02 species. It is becoming increasingly evident that H0~ may play a major role in the combustion and inhibition of gaseous hydrocarbons [16,17]. A preliminary procedure for the optical measurement of HO2 has been briefly discussed [25]. Data on H02 concentrations would be valuable to the goals of this study. 3.4. Data Reduction Information from the carefully selected experiments will be analyzed using new methods recently developed by the senior author. The concepts of dissociation/recombination requirements imposed by stoichiometry [16], partial-equilibrium- state theory [3,16-18], dissociation efficiency [16,17], and fuel- [16] and oxidant- [17] self inhibition will be the basic chemical principles used to systemize observations of ignition and flammability phenomena over a range of equivalence ratios. /^-20- |
