热声热机的频率特性研究  

FREQUENCY CHARACTERISTIC INVESTIGATION ON THERMOACOUSTIC ENGINES

作　　者：张富珍 姜任秋[1] 李青[2] 陈熙[3] 禹智斌[2] 

机构地区：[1]哈尔滨工程大学动力与核能工程学院 [2]中国科学院理化技术研究所 [3]华中科技大学低温实验室

出　　处：《低温工程》2004年第4期41-44,54,共5页Cryogenics

摘　　要：热声效应是热声回热器与热声工质在一定的温度梯度作用下相互作用的结果 ,热声热机的频率是热声系统的一个重要参数 ,对于热声制冷机其直接决定了消耗声功而泵热的可能性。分别分析了不考虑热粘效应和考虑热粘效应时空谐振管的谐振频率 ,认为考虑热粘效应时 ,谐振频率大于不考虑热粘效应时的频率 ,同时分析了有温度梯度存在时的热声驱动器和热声制冷机的谐振频率 ,认为热声器件的存在改变了系统的频率特性 ,使系统的频率高于没有板叠存在时的频率。此结论对于热声制冷机的设计有重要的指导意义。Thermoacoustic effect is the interaction between the regenerator and working substance at gradient temperature. The frequency of the system is an important parameter. It determines if the system can realize the target to transfer heat from the cold end to the hot end. The paper analyzed the frequency of empty resonators from two view-thermal hysteresis and viscous effects are not considered and considered. The results indicated that the thermal and visual effects increased frequency of the system. At the same time, the paper analyzed the frequency of a thermoacoustic system with a gradient temperature stack. The thermoacoustic components change the frequency of the resonator and increase the frequency of the empty resonator,too. The results are important to thermoacoustic engine designe.

关 键 词：热声热机 频率 热粘效应 热声效应 热声制冷机 

分 类 号：TB651[一般工业技术—制冷工程]