Abstract
The article considers the influence of the geometric characteristics of a wire spiral turbulator on the heat transfer coefficient of combustion products. The design and operation principle of a fire-tube boiler are described. A technique for thermal calculation of a fire-tube boiler and a model for calculating the heat transfer coefficient when using a turbulator are presented. A computational experiment has been carried out and a comparative analysis of the change in the heat transfer coefficient of combustion products depending on various geometric characteristics of a wire spiral turbulator has been carried out. The maximum increase in the heat transfer coefficient by 58 % was recorded with an increase in the angle of inclination of the turns of the turbulator from 30° to 80°
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