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Determination Of The Equivalence Ratio During Fire, Comparison Of Techniques

Andersson, B., Holmstedt, G. and Dagneryd, A., 2003. Determination Of The Equivalence Ratio During Fire, Comparison Of Techniques. Fire Safety Science 7: 295-308. doi:10.3801/IAFSS.FSS.7-295


Equivalence ratios have been determined with two different techniques. The first, called the phi-meter, is a modification of the phi-meter earlier presented by Babrauskas et al. [1], while the other utilizes a mass spectrometer as the analyzing instrument. Results are presented from experiments with both techniques and a discussion concerning the deviations from theoretically calculated results is presented. The two methods presented are possible candidates in situations where global and/or local equivalence ratios need to be measured. In its present conformation, the phi-meter gives more consistent results than the mass spectrometer approach but the latter can be considerably improved by using a mass spectrometer with better resolution.


equivalence ratio, phi value, global equivalence ratio, phi-meter, mass spectrometer

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