Acoustic pyrometry in flames

作者：Srinivasan K^*; Sundararajan T; Narayanan S; Jothi T J S; Sarma C S L V Rohit

来源：Measurement, 2013, 46(1): 315-323.

DOI：10.1016/j.measurement.2012.07.003

• Acoustic pyrometry
• Hartmann whistle
• Time-of-flight applications

This paper investigates temperature measurement using acoustic pyrometry in hot zones and flames. For experiments in flameless hot zones, a Hartmann whistle is used as the acoustic source. Time of flight of sound waves in the heated path is calculated by cross-correlating the signals received by two microphones placed at pipe ends. Acoustic pyrometry is also performed for estimation of flame temperature in kerosene wick and candle flames, using a speaker as the acoustic source. Since length scales of single flames are small, leading to short times-of-flight, appropriate temperature profiling strategies for flame temperature estimation are identified.

• 出版日期2013-1