Numerical Calculation of the Performance of a Thermoacoustic System with Engine and Cooler Stacks in a Looped Tube
Numerical Calculation of the Performance of a Thermoacoustic System with Engine and Cooler Stacks in a Looped Tube
复制标题
DOI：
10.3390/app7070672
复制
发表时间：
2017-06
期刊：
影响因子：
--
通讯作者：
Irna Farikhah;Y. Ueda
中科院分区：
文献类型：
--
作者：
Irna Farikhah;Y. Ueda
对由环形管、发动机堆、冷却器堆和四个换热器组成的热声系统的性能进行了数值研究。每一堆具有狭窄的流道，由两个换热器夹在中间，并位于环形管中。为了给设计提供指导，通过改变发动机堆内流道半径、冷却器堆内流道半径和冷却器堆相对位置三个参数对系统的性能进行了数值计算。结果表明，当三个参数优化时，发动机堆的效率达到卡诺效率的75%，冷却器堆的性能系数(COP)为卡诺效率的53%，而发动机堆产生的声功率的33%被用于冷却器堆。
The performance of a thermoacoustic system that is composed of a looped tube, an engine stack, a cooler stack, and four heat exchangers, is numerically investigated. Each stack has narrow flow channels, is sandwiched by two heat exchangers, and is located in the looped tube. In order to provide a design guide, the performance of the system is numerically calculated by changing the following three parameters: the radius of the flow channels in the engine stack, the radius of the flow channels in the cooler stack, and the relative position of the cooler stack. It was found that when the three parameters are optimized, the efficiency of the engine stack reaches 75% of Carnot’s efficiency and the coefficient of the performance (COP) of the cooler stack is 53% of Carnot’s COP, whereas 33% of the acoustic power generated by the engine stack is utilized in the cooler stack.