Acoustic pyrometry in flames

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• 作者：K. Srinivasan ; ^{ksri@iitm.ac.in} ; T. Sundararajan ; S. Narayanan ; T.J.S. Jothi ; C.S.L.V. Rohit Sarma
• 关键词：Acoustic pyrometry ; Hartmann whistle ; Time-of-flight applications
• 刊名：Measurement
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：46
• 期：1
• 页码：315-323
• 全文大小：1297 K

文摘

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.