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Design, manufacturing and testing of a compact thermoacoustic refrigerator
Applied Thermal Engineering ( IF 6.4 ) Pub Date : 2021-02-09 , DOI: 10.1016/j.applthermaleng.2021.116705
Islam A. Ramadan , Hélène Bailliet , Gaëlle Poignand , David Gardner

Thermoacoustic refrigeration technology is a green alternative for the conventional refrigeration system in vehicles. The former uses environmentally friendly inert gases whereas the latter uses chemical refrigerants that can have severe impacts on the environment. In order to apply thermoacoustic technology in the automobile industry, the size and the weight of plausible thermoacoustic refrigerators should be decreased.

The design of a new compact thermoacoustic refrigerator is described in this study. This thermoacoustic refrigerator uses two electroacoustic components and one thermoacoustic core. The technical details of design, fabrication, and testing processes are presented. A methodology for thermal design of the heat exchangers is proposed and validated by measurements. The effects of different parameters, such as the driver piston displacement amplitude, the phase shift between the voltage signals applied to the electroacoustic components, and the cold side temperature on the performance indices of the refrigerator are investigated.

The performance of the prototype is compared with the performance calculated by the DeltaEC design model. The overall agreement between the calculated and the measured performance parameters is fair, but further insight into the temperature distributions reveals that non-linear effects yield discrepancies between the model and the experimental results. A preliminary discussion of the origin of these discrepancies is proposed.



中文翻译:

紧凑型热声冰箱的设计,制造和测试

热声制冷技术是车辆常规制冷系统的绿色替代方案。前者使用环保的惰性气体,而后者使用化学制冷剂,会对环境造成严重影响。为了在汽车工业中应用热声技术,应该减小合理的热声冰箱的尺寸和重量。

这项研究描述了一种新型的紧凑型热声冰箱的设计。该热声制冷机使用两个电声组件和一个热声芯。介绍了设计,制造和测试过程的技术细节。提出了热交换器的热设计方法,并通过测量进行了验证。研究了驱动活塞位移幅度,施加到电声组件的电压信号之间的相移以及冷侧温度等不同参数对冰箱性能指标的影响。

将原型的性能与DeltaEC设计模型计算出的性能进行比较。计算和测量的性能参数之间的总体一致性是公平的,但是对温度分布的进一步了解表明,非线性效应会导致模型与实验结果之间出现差异。建议对这些差异的起源进行初步讨论。

更新日期:2021-02-19
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