| |
|
S10 Fluidodinâmica de Escoamento Multifásico |
| |
|
Title:
|
ONSET OF NUCLEATE BOILING AND ONSET OF FULLY DEVELOPED SUBCOOLED BOILING DETECTION USING PRESSURE TRANSDUCERS SIGNALS SPECTRAL ANALYSIS
|
| |
|
Summary :
|
|
THE EXPERIMENTAL TECHNIQUE USED FOR DETECTION OF SUBCOOLED BOILING THROUGH ANALYSIS OF THE FLUCTUATION CONTAINED IN PRESSURE TRANSDUCERS SIGNALS IS PRESENTED. THE EXPERIMENTAL PART OF THIS WORK WAS CONDUCTED AT THE INSTITUT FÜR KERNTECHNIK UND ZERTÖRUNGSFREIE PRÜFVERFAHREN 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 ALLOWS US TO CONCLUDE THAT THIS TECHNIQUE IS ADEQUATE FOR THE DETECTION AND MONITORING OF THE ONB AND OFDB.
KEY-WORDS: SUBCOOLED BOILING, SPECTRAL ANALYSIS, EXPERIMENT.
|
| |
|
Author :
|
de Castro, Alfredo José Alvim
Maprelian, Eduardo 0
Maprelian, Eduardo 0
Ting, Daniel Kao Sun
|
| |
|
Paper View :
|
|
