The findings show the new method to be a significant improvement in automatic glare reduction compared with earlier methods. The method is not computationally demanding, so it can in the future be evaluated clinically in high-definition endoscopic imaging systems and developed further in this environment.
In order to achieve ultra-low NOx emissions, the effects of total excess air
coefficient, air coefficient in main combustion zone, blended-coal
combustion and ammonia nitrogen molar ratio on a 330 MW coal-fired boiler
combustion were studied by numerical simulation. The results show that the
velocity field and temperature field in the furnace have synergy, the better
the synergy is, the faster the temperature rises, and the more NOx it
generates. Compared before and after urea spraying, the NOx concentration
decreased with the decrease of the total excess air coefficient, the optimum
total excess air coefficient is about 1.15, and the denitrification rate is
as high as 76.2%. The smaller the air coefficient in the main combustion
zone is, the smaller the NOx concentration is. The optimum air coefficient
in the main combustion zone is about 0.92, and the denitrification rate is
85%. After urea injection, the denitrification rate of high volatile coal
combustion is higher than that of low volatile coal combustion, and the
reasonable blending mode of coal can reduce NOx emissions. The larger the
ammonia-nitrogen molar ratio is, the lower the NOx concentration is. When
the ammonia-nitrogen molar ratio is greater than 2, the amount of ammonia
escape at the flue outlet exceeds the standard. When the ammonia-nitrogen
molar ratio is less than 1, the NOx concentration at the flue outlet is
greater than that before urea injection. The optimal ammonia-nitrogen molar
ratio is about 2.
In the paper the measurement program of transformer winding temperature was proposed by using the fluorescence lifetime. We produced a probe to measure the temperature of the oil immersed transformer winding and used high temperature fiber to transfer fluorescence. Three methods were used to calculate the fluorescent life. By comparing advantages and disadvantages of three methods, the Prony algorithm was selected .Because it can fit multi-exponential and improve the accuracy of temperature measurement which is suitable for the fluorescence curve. At the same time, the calibration experiments of the measured temperature were carried out to achieve a real-time measurement of oil temperature.
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