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  • estimation of radiative properties and temperature distributions in coal-fired boiler furnaces by a portable image processing system

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1043
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this paper presented an experimental investigation on the estimation of radiative properties and temperature distributions in a 670 t/h coal-fired boiler furnace by a portable imaging processing system. the portable system has been calibrated by a blackbody furnace. flame temperatures and emissivities were measured by the portable system and equivalent blackbody temperatures were deduced. comparing the equivalent blackbody temperatures measured by the portable system and the infrared pyrometer, the relative difference is less than 4%. the reconstructed pseudo-instantaneous 2-d temperature distributions in two cross-sections can disclose the combustion status inside the furnace. the measured radiative properties of particles in the furnace proved there is significant scattering in coal-fired boiler furnaces and it can provide useful information for the calculation of radiative heat transfer and numerical simulation of combustion in coal-fired boiler furnaces. the preliminary experimental results show this technology will be helpful for the combustion diagnosis in coal-fired boiler furnaces.

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