Using oxygen-quenched pressure-sensitive paint for oxygen concentration measurements in low-temperature combustion environments

Summary, in English

The feasibility of using pressure-sensitive paint for oxygen concentration measurements in low-temperature combustion environments has been investigated and applied to slow combustion processes. In addition, the temperature limitation for this application was studied. A Nd:YAG laser system, a PMT and fiber-optics were used for developing a compact probe for oxygen measurements. The lifetime sensitivity to oxygen concentration and temperature of a commercially available pressure-sensitive paint has been investigated with regard to possible abilities and limitations. After calibrations with regard to temperature, measurements in slow combustion environments showed that the technique is capable of accurately measuring oxygen concentration in environments up to 180 degrees C. The measurements indicate usability also in the combustion area despite issues of thermal quenching and quenching from NO. The compact design of the system makes it a useful tool for oxygen measurements in situations where suction probes and other oxygen measurement techniques are too intrusive.

• Author: Gustaf Särner; Ulf Göransson; Johannes Lindén; Mattias Richter; Marcus Aldén
• Department/s: Combustion Physics; Division of Fire Safety Engineering
• Publishing year: 2008
• Language: English
• Publication/Series: Measurement Science & Technology
• Volume: 19
• Issue: 8
• Links: http://dx.doi.org/10.1088/0957-0233/19/8/085307
• Document type: Journal article
• Publisher: IOP Publishing
• Topic: Building Technologies; Other Civil Engineering; Atom and Molecular Physics and Optics
• Keywords: pyrolysis; combustion; laser; laser-induced; pressure-sensitive paint; PSP; oxygen sensing; oxygen concentration; optical fiber probe
• Status: Published
• ISBN/ISSN/Other: ISSN: 0957-0233