In order to further understand the heat transfer characteristics of pulse combustion drying process, a Helmholtz type pulsing burner was used to carry out heattransfer experiments. Through a convective heat-transfer experiment between pulsing air and brass ball by the method of lumped heat capacity, the convective heat-transfer coefficient in different frequencies pulse air was determined, and the impact of pulse frequency on the convective heat-transfer coefficient between material and airflow was investigated, the criterion correlation between Nu and pulse frequency was also established. By using the established correlation, the drying process of the refractory clay particles in the pulse combustion was forecasted. Compared with the experimental value, the results showed that the predicted values and the experimental results matched well.
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路倩倩,杨德勇,郎芝花,刘相东.脉动燃烧干燥换热特性分析与实[J].农业机械学报,2010,41(3):123-127. and Experiment of Heat Transfer in Helmholtz Pulse Combustion Dryer[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(3):123-127.