| Autor: |
Alahautala, Taito, Lassila, Erkki, Hernberg, Rolf, Härkönen, Esko, Vuorio, Petteri |
| Předmět: |
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| Zdroj: |
Measurement Science & Technology; Nov2004, Vol. 15 Issue 11, p2256-2262, 7p |
| Abstrakt: |
An optical method based on light extinction was used in measuring pulp quantity in the plate gap of a 10 MW thermomechanical pulping refiner for the first time. The relationship between pulp quantity and light extinction was determined by empirical laboratory experiments. The empirical relationship was then applied to interpret the image data obtained from field measurements. The results show the local distribution of pulp in the refiner plate gap for different rotor plate positions and refiner operation points. The maximum relative uncertainty in the measured pulp quantity was 50%. Relative pulp distributions were measured at higher accuracy. The measurements have influenced the development of a laser-based optical diagnostic method that can be applied to the quantitative visualization of technically demanding industrial processes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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