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首页> 外文期刊>Applied thermal engineering: Design, processes, equipment, economics >Design of a thermoacoustic heat engine for low temperature waste heat recovery in food manufacturing A thermoacoustic device for heat recovery
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Design of a thermoacoustic heat engine for low temperature waste heat recovery in food manufacturing A thermoacoustic device for heat recovery

机译：用于食品制造中的低温余热回收的热声热机的设计一种用于热回收的热声装置

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摘要

There is currently an urgent demand to reuse waste heat from industrial processes with approaches that require minimal investment and low cost of ownership. Thermoacoustic heat engines (TAHEs) are a kind of prime mover that convert thermal energy to acoustic energy, consisting of two heat exchangers and a stack of parallel plates, all enclosed in a cylindrical casing. This simple design and the absence of any moving mechanical parts make such devices suitable for a variety of heat recovery applications in industry. In this present work the application of a standing-wave TAHE to utilise waste heat from baking ovens in biscuit manufacturing is investigated. An iterative design methodology is employed to determine the design parameter values of the device that not only maximise acoustic power output and ultimately overall efficiency, but also utilise as much of the high volume waste heat as possible. At the core of the methodology employed is DeltaEC, a simulation software which calculates performance of thermoacoustic equipment. Our investigation has shown that even at such a comparatively low temperature of 150℃ it is possible to recover waste heat to deliver an output of 1029.10 W of acoustic power with a thermal engine efficiency of 5.42%.
机译：当前，迫切需要以最小的投资和较低的拥有成本的方法来重复利用来自工业过程的废热。热声热机（TAHE）是一种将原热能转换为声能的原动力，由两个热交换器和一叠平行板组成，所有这些热交换器都封装在一个圆柱形外壳中。这种简单的设计以及没有任何移动的机械零件，使得此类设备适用于工业中的各种热回收应用。在本工作中，研究了驻波TAHE在饼干制造中利用烘烤炉的余热的应用。采用迭代设计方法来确定设备的设计参数值，该参数不仅使声功率输出和最终的整体效率最大化，而且还要利用尽可能多的大量废热。所采用方法的核心是DeltaEC，这是一种模拟软件，可计算热声设备的性能。我们的研究表明，即使在如此低的150℃温度下，也有可能回收废热，以使热能效率达到5.42％来输出1029.10 W的声功率。

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