Simulation Analysis and Experimental Research on Complex Structure Processing Technology of Fan Vent

Abstract

Aiming at the problems of large temperature differences and inconsistent baking speeds at different positions in the tobacco chamber of the tobacco baking room, this paper proposes a complex structure processing technology of fan vent. according to the structure and drying principle of the baking room, ANSYS fluent simulation software was used to analyze the processing parameters of the heat flow field inside the baking room. combining the characteristics of positive and negative air supply baking, the processing and manufacturing parameters of the baking room were optimized, and then the baking comparison test was performed. The results show that: the forward and reverse air-baking method and the complex structure reduces the temperature difference in the interior of the smoke chamber; the forward and reverse air-bake method reduces the baking time by 11 hours, and reduces the coal consumption and power consumption by 12.6%, 48.5%, the standard deviation of temperature monitoring points in the baking room decreased by 44%.

Based on metabolomics, the optimum wind speed process parameters of flue-cured tobacco in heat pump bulk curing barn were explored

“…The fan parameters of the current bulk curing barn design are only high and low, and the wind speed is measured to be equivalent to 900 r/min and 1300 r/min. Because the yellowing stage of tobacco leaves is the key period for the accumulation of tobacco precursors, and the control requirements for the water loss rate of tobacco leaves are high in the late yellowing stage 24,25 , in this experiment we divided the yellowing stage into two stages with 38 °C as the boundary. Based on this, the fan speed for different stages was established (Table 2).…”