Impact of Gedeon streaming on the efficiency of a double-inlet pulse tube refrigerator
Impact of Gedeon streaming on the efficiency of a double-inlet pulse tube refrigerator
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Gedeon 流对双入口脉冲管制冷机效率的影响
DOI：
10.1016/j.applthermaleng.2016.09.118
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发表时间：
2017
影响因子：
6.4
通讯作者：
Yang Rui
中科院分区：
文献类型：
--
作者：
Tang Ke;Feng Ye;Jin Tao;Jin Shenghan;Yang Rui
Gedeon流动会使双入口脉管制冷机的效率显著下降，传统观点认为这是由Gedeon流动带来的热损失引起的。本文从不同的角度解释了Gedeon流对双进气脉管制冷机效率影响的机理。对一种典型的双入口脉管制冷机进行了模拟计算，分析了不同Gedeon流量下Gedeon流量与回热器和脉管内局部温度之间的相互影响。重点讨论了声场的特性、Gedeon流对温度分布的影响以及冷端换热器的能量流动。结果表明，不同流量下Gedeon流动引起的回热器和脉冲管内部不同的温度分布可以大大改变某些能量流量，例如由于熵传输而产生的等效传导热流量。这是Gedeon流动影响双入口脉管制冷机效率的根本机制，而不是Gedeon流动本身携带的焓流引起的热损失。
Gedeon streaming can cause a considerable deterioration in the efficiency of a double-inlet pulse tube refrigerator, which is usually ascribed to the thermal loss carried by the streaming in the conventional view. This paper addresses a different explanation of the mechanism behind the effect of Gedeon streaming on the efficiency of the double-inlet pulse tube refrigerator. Simulations of a typical double-inlet pulse tube refrigerator for various Gedeon streaming have been conducted to analyze the interaction between the enthalpy flow rate delivered by Gedeon streaming and the local temperature inside the regenerator and the pulse tube. The discussions are focused on the characteristics of acoustic field, the impact of Gedeon streaming on the temperature profiles, and the energy flows at the cold heat exchanger. The results indicate that different temperature profiles inside the regenerator and the pulse tube, caused by Gedeon streaming at various flow rate, can substantially change certain energy flow rates, e.g. equivalent conduction heat flow rate due to entropy transportation. This is the essential mechanism for Gedeon streaming affecting the efficiency of the double-inlet pulse tube refrigerator, instead of the thermal loss due to the enthalpy flow carried by the Gedeon streaming itself.