扬声器驱动热声制冷机的频率特性研究  

INVESTIGATION OF FREQUENCY CHARACTERISTIC OF LOUDSPEAKER-DRIVEN THERMOACOUSTIC REFRIGERATOR

作　　者：丁国忠[1] 胡兴华[1] 郭方中[1] 黄素逸[1] 陈正军[1] 李嘉[1] 

机构地区：[1]华中科技大学能源与动力工程学院制冷及低温实验室,湖北武汉430074

出　　处：《真空与低温》2006年第2期100-103,共4页Vacuum and Cryogenics

基　　金：国家自然科学基金(50276064)资助

摘　　要：对电声制冷机的电声效率的影响因素及与工作频率的关系做了实验研究。实验表明,回热器长度和填料种类、位置以及谐振腔长度、工作气体等都对工作频率有影响,存在一个频率迁移,使制冷机工作在优化范围。对于扬声器参数及电声效率计算采用网络模型做了验证计算。计算结果和实验是一致的。The frequency characteristic of loudspeaker-driven thermoacoustic refrigerator （TAR） and the influence factors are investigated. Experimental results under different conditions show that frequency characteristic is affected by the length of stack and types and location of stack materials and the length of resonator and gas types. A narrow frequency transmission band is existent to make TAR generate strong oscillating and cause thermoacoustic effect, the TAR achieves optimum performance at resonance frequency. The frequency characteristic is determined by compositive network elements of TAR. Then the network model is built to validate the experimental results.

关 键 词：热声制冷机 频率特性 电声效率 网络模型 

分 类 号：TB651[一般工业技术—制冷工程]