DocumentCode :
3466380
Title :
Temperature measurement of gases using acoustic means
Author :
Moss, Brian ; Leen, Gabriel ; Lewis, Elfed ; Bremer, Kort ; Niven, Andrew
Author_Institution :
Opt. Fibre Sensor Res. Centre, Univ. of Limerick, Limerick
fYear :
2009
fDate :
23-26 March 2009
Firstpage :
1
Lastpage :
6
Abstract :
Traditional temperature measurement devices such as bimetallic strips, thermocouples, RTDs, radiation devices (i.e. Infrared), silicon P-N junctions etc. all have limitations such as range or slow response times due to them having to dasiareachpsila temperature. These limitations, while normally not an issue become so where high speed operation or large temperature ranges are either required and/or likely to be encountered. Kleppe [1, 2] and Stones[3] describe methods based on Acoustic Pyrometry for high speed high temperature measurement in flue gas flows and high pressure burner combustors. However most Acoustic Pyrometric schemes use active acoustics in that an acoustic wave of sufficient power and frequency (usually ultrasonic) is introduced into the medium to be received by an appropriate transducer a distance away. From the resultant time of flight (TOF) of the transmitted signal the speed of sound in that gas region can be determined. The aim of this paper is to discuss the use of passive acoustic sensors that utilise the self generating pressure pulses in a dynamic gas flow.
Keywords :
acoustic measurement; acoustic transducers; flow measurement; high-pressure effects; pyrometers; acoustic pyrometry; bimetallic strips; dynamic gas flow; flue gas flows; high pressure burner combustors; passive acoustic sensors; radiation devices; self generating pressure pulses; silicon P-N junctions; temperature measurement devices; thermocouples; time of flight; Acoustic devices; Acoustic waves; Delay; Flue gases; Frequency; P-n junctions; Silicon; Strips; Temperature distribution; Temperature measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Systems, Signals and Devices, 2009. SSD '09. 6th International Multi-Conference on
Conference_Location :
Djerba
Print_ISBN :
978-1-4244-4345-1
Electronic_ISBN :
978-1-4244-4346-8
Type :
conf
DOI :
10.1109/SSD.2009.4956712
Filename :
4956712
Link To Document :
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