理想斯特林冰箱中的压力-容积关系

IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED
Danielle Yang, Michael Gschwendtner, Zindh Waleed, Michael Protheroe
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引用次数: 0

摘要

据说,压缩或膨胀气体与邻近壁面之间热量传递的滞后损失在斯特林机器中起着重要作用,它增加了所需的 p-V 功。以往的研究将滞后损失与压力相移联系起来。本研究探讨了压力相移对单空间净 p-V 功的影响。使用实验性活塞密封装置对 Sage 模型进行了验证。此外,还利用迭代模型讨论了传热的时间依赖性及其如何影响压力相移。对施密特方程进行了处理,以确定理想斯特林制冷机中压力和容积振荡之间的相移。研究发现,即使是理想化的斯特林冰箱,为了产生制冷效果,压力和容积之间的相移也不能为零。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The pressure-volume relationship in an ideal Stirling refrigerator

Hysteresis losses in the heat transfer between compressing or expanding gas and the adjacent wall is said to play an important role in Stirling machines, where it increases the amount of required p-V work. Previous studies have linked hysteresis loss with the pressure phase shift. In the context of this research, the effect of the pressure phase shift on the net p-V work in a single space is examined.

A Sage model of a single space piston-cylinder device is used to investigate the underlying mechanisms of the pressure phase shift. The Sage model is validated using an experimental piston seal rig. In addition, the time dependence of heat transfer is discussed along with how it affects the pressure phase shift, using an iterative model. The Schmidt equations were manipulated to determine the phase shift between pressure and volumetric oscillation in an ideal Stirling refrigerator.

The results of this investigation are surprising. It was found that even in the case of an idealized Stirling refrigerator, the phase shift between pressure and volume is non-zero in order to produce a refrigeration effect.

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来源期刊
Cryogenics
Cryogenics 物理-热力学
CiteScore
3.80
自引率
9.50%
发文量
0
审稿时长
2.1 months
期刊介绍: Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are: - Applications of superconductivity: magnets, electronics, devices - Superconductors and their properties - Properties of materials: metals, alloys, composites, polymers, insulations - New applications of cryogenic technology to processes, devices, machinery - Refrigeration and liquefaction technology - Thermodynamics - Fluid properties and fluid mechanics - Heat transfer - Thermometry and measurement science - Cryogenics in medicine - Cryoelectronics
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