带压力放大器的驻波型热声发动机驱动RC负载的模拟研究  

Simulation On Standing-Wave Thermoacoustically Driven RC Load With A Pressure Amplifier

作　　者：寿琳[1] 陈国邦[1] 曹卫华[1] 包锐[1] 汤珂[1] 裘圆[1] 

机构地区：[1]浙江大学制冷与低温工程研究所201室,浙江杭州310027

出　　处：《低温与特气》2006年第5期9-11,共3页Low Temperature and Specialty Gases

摘　　要：对驻波型热声发动机压力放大器长度对系统性能的影响进行了模拟计算,根据计算分析得知压力放大器的实际最佳长度应该小于系统1/4波长,并且受热声发动机的加热功率、工作压力和负载大小的影响;在负载的声阻固定的情况下,一定范围内振动频率、加热温度、负载入口声功随着压力放大器长度的增大而增大;压力放大器可以提高负载入口声功和效率。The influence of length of the pressure amplifier on the performance of the standing-wave thermoacoustic engine was simulated. It is shown that the practical optimum length of the pressure amplifier should be shorter than one fourth of the system＇s wavelength, and it is also infected by the input power, working pressure, load and so on; when the acoustic resistance of the load is fixed, oscillating frequency, heating temperature and input power to RC load will increase along with the increase of the length of the pressure amplifier in a certain range. In addition, the pressure amplifier amplifies both the acoustic power and the efficiency.

关 键 词：驻波 热声发动机 阻容负载 压力放大器 

分 类 号：TK40[动力工程及工程热物理—动力机械及工程]