为探讨脉动燃烧干燥新技术的干燥性能 ,研制了脉动燃烧干燥试验装置 ,并进行了干燥油菜籽的试验研究。分析了频率、热负荷以及干燥管长度对干燥指标的影响。通过脉动燃烧干燥传热试验研究和理论分析 ,得出脉动燃烧器尾管内干燥的传热努塞尔数 N u与雷诺数 Re呈指数关系变化 ;脉动燃烧干燥的努塞尔数 N u是部分传统干燥器的 2～ 5倍。 In order to explore the drying performance of pulsed combustion drying technology, a pulsation combustion drying test device was developed and the experimental study of dry rapeseed was carried out. The effects of frequency, heat load and drying tube length on drying index were analyzed. Experimental and theoretical analysis of pulsating combustion heat transfer shows that the Nusselt number N u of the heat transfer in the tail pipe of the pulsating combustor changes exponentially with the Reynolds number Re. The Nusselt number N u of pulsating combustion drying is the part Traditional dryer 2 to 5 times.