N. Fialko, R. Navrodska, G. Gnedash, G. Presich, S. Shevchuk
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Study of Heat Recovery Systems for Heating and Moisturing Combustion Air of Boiler Units
thermal and hydraulic calculation of a heat-recovery installation, known calculation methods were used, taking into account the experimental data obtained. Results. The laws of heat transfer during deep cooling of exhaust-gases with moisture content X = 0.15— 0.30 kg/kg d.g. are established. The thermal, hydraulic and operating characteristics of the proposed complex heat-recovery installation with heating and humidification of the combustion air in different modes of operation of the boiler are determined. This installation has been introduced; its tests have been carried out, which have confirmed high thermal and environmental efficiency. Conclusions. The application of the proposed complex heat-recovery unit allows increasing the coefficient of the use heat of fuel of boiler depending on its operating mode by 13—20%.
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