在热声板堆中移动的温度变量气体的热传递定律研究
1School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China.
Scientific reports
|April 25, 2024
概括
这项研究模拟了声音场中的热传递,揭示了空气质量的振幅显著影响热传递. 热声制冷器需要运行频率高于冷却的临界值,受堆温度梯度的影响.
科学领域:
- 热力学是一种热力学.
- 声学 声学 在声学上
- 热传递热量转移的方法
背景情况:
- 热声学效应描述了由声场驱动的传热现象.
- 了解传热动力学对于开发冰箱等热声设备至关重要.
研究的目的:
- 建立一个数学模型的热传递在一个工作周期,涉及移动的变量温度的空气质量在一个声音场.
- 分析影响热传输的因素,并确定在热声系统中有效制冷的条件.
主要方法:
- 在单一工作周期中开发热传递的数学模型.
- 分析空气质量幅度和运行频率对传热的影响.
- 研究关键工作频率,堆温度梯度和相对于压力腹的位置之间的关系.
主要成果:
- 热传递受到空气质量幅度的显著影响,与其平方成比例.
- 热声制冷器存在一个关键的操作频率;在这个频率以上的操作是必要的冷却.
- 关键运行频率独立于振幅,但随着堆温度梯度和距离压力腹的距离而增加.
结论:
- 已建立的模型为热声效应提供了新的见解.
- 优化空气质量振幅和操作频率是高效的热声制冷的关键.
- 建议使用短板重叠的概念来解释特定配置中的温度差异.
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