Measurement of the coolant flow rate using correlation of temperature fluctuations |
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Authors: | G. Por M. Berta M. Csuvar |
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Affiliation: | aBudapest University of Technology and Economics, H-1525, Budapest, Hungary |
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Abstract: | The transit time of the coolant, and thus its velocity, has been measured using the temperature fluctuation at the outlet of a reactor core. An impulse response function estimation is introduced, which substitutes the widely used cross-correlation measurement technique. It is shown in theory and practice that the time delay estimation is improved when using the impulse response function instead of the cross-correlation function in parameter estimation. Extremely low velocities (down to 2 cm/sec) have been measured in a natural circulation regime in a research reactor. |
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Keywords: | transfer function impulse response cross correlation function fluctuation measurements coolant velocity estimation |
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