Multizone ultrasonic thermometry with application to coal gasification systems
The decrease of sound velocity with temperature in solid media is utilized in ultrasonic thermometry. A multizone sensor generally consists of a thin rod on which small notches are made to partition the sensor length into various zones. The change of acoustic impedance at the notches causes the sound waves to be partly reflected back, and the measurement of time intervals between the successive pairs of reflected signals provides an indication of the average temperatures in the corresponding zones. This paper addresses the application of ultrasonic senses to temperature profiling in the reactors of coal gasification systems. In particular, results on the sensor development, materials testing, and signal processing are presented. 14 references, 8 figures, 1 table.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5173510
- Report Number(s):
- CONF-840577-2; ON: DE84006450
- Resource Relation:
- Conference: 30. international instrumentation symposium, Denver, CO, USA, 7 May 1984
- Country of Publication:
- United States
- Language:
- English
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