Onset of Nucleate Boiling and Onset of Fully Developed Subcooled Boiling Using Pressure Transducers Signals Spectral Analysis

The experimental technique used for detection of subcooled boiling through analysis of the fluctuation contained in pressure transducer signals is presented. This work was partly conducted at the Institut fur Kerntechnik und zertorungsfreie Prufverfahren von Hannover (IKPH, Germany) in a thermal-hyd...

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Bibliographic Details
Published in:Revista brasileira de ciências mecãnicas 2001-01, Vol.23 (4), p.513-522
Main Authors: Castro, Alfredo José Alvim de, Maprelian, Eduardo, Ting, Daniel Kao Sun
Format: Article
Language:English
Subjects:
Correlation methods
ENGINEERING, MECHANICAL
Geometry
Nucleate boiling
Pressure transducers
Spectrum analysis
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Summary:The experimental technique used for detection of subcooled boiling through analysis of the fluctuation contained in pressure transducer signals is presented. This work was partly conducted at the Institut fur Kerntechnik und zertorungsfreie Prufverfahren von Hannover (IKPH, Germany) in a thermal-hydraulic circuit with one electrically heated rod with annular geometry test section. Piezoresistive pressure sensors are used for onset of nucleate boiling (ONB) and onset of fully developed boiling (OFDB) detection using spectral analysis/signal correlation techniques. Experimental results are interpreted by phenomenological analysis of these two points and compared with existing correlation. The results allow us to conclude that this technique is adequate for the detection and monitoring of the ONB and OFDB.
ISSN:0100-7386
0100-7386
DOI:10.1590/s0100-73862001000400012