基于热声效应的多功能声波制冷系统的研制

STUDY OF MULTI-FUNCTION SOUND REFRIGERATION SYSTEM BASED ON THERMO-ACOUSTIC EFFECT

在详细分析了热声效应的微观工作原理的基础上,结合有关温度、压力等参数测量与控制技术,完成了以天然工质——空气为制冷工质的声波制冷主机系统、电气控制系统、高精度动态测试系统和高速数据采集系统的研制与开发,最终形成了一套相对完整的多功能声波制冷测试实验平台。在实验系统的运行范围内,温度测量的准确度为0.5 K,通道扫描数为50/s,压力测量的准确度为量程的0.1%,最大采样时间为3μs。大量的实际运行结果表明:新研制的多功能声波制冷实验系统性能稳定,测试结果可靠,利用该实验系统既可获得声波制冷各个参数间的动态关联特性,同时可以完成声波制冷的综合性能测试及优化对比实验,为声波制冷的理论研究和实用化进程提供可靠的实验数据。

In order to solve the serious environmental pollution problem including global warming, depletion of ozone, based on the microcosmic analysis to working process of the acoustic refrigeration and the research on the dynamic measuring technology about the temperature and pressure, a new mtdti-function sound wave refrigeration experimental system was developed, which consists of a sound wave refrigerator, a electrical controlling system, a dynamic measurement system with high accuracy, and a high-speed data collecting system. With the new experimental system, not only can we accomplish the experimental research about dynamic correlative characteristic between every parameter of sound wave refrigeration and the optimum experiment of refrigeration performance, but also do the experimental research about acoustic characteristic in standing wave tube, which provides an experimental basis for academic research and practicality process of acoustic refrigeration.