Numerical and experimental investigation of 12 W/60 K high-efficiency coaxial pulse tube cryocooler

IF 1.8 3区工程技术 Q3 PHYSICS, APPLIED

Cryogenics Pub Date : 2024-08-30 DOI:10.1016/j.cryogenics.2024.103941

Yanen Li , Nailiang Wang , Miguang Zhao , Qingjun Tang , Yuqiang Xun

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引用次数: 0

Abstract

Maintaining a low-temperature environment is paramount in pursuing reliable operation for infrared detectors. To address the rising demand for long-wave infrared detectors functioning in low-temperature environments around 60 K, this study investigates the enhanced efficiency of a 60 K coaxial pulse tube cryocooler (PTC) through both simulation analysis and experimental methods. A PTC model was developed using Sage software to optimize parameters such as cold finger size. Analysis of the internal flow field highlighted that variations in cold head temperature, frequency, and input power significantly impact phase angle distribution within the regenerator. Experimental results yielded the same conclusion and confirmed how these critical factors affect the PTC’s performance. Through systematic optimization of simulations and experiments, a cooling performance of 12.7 W/60 K was achieved with an input power of 300 W. Furthermore, when the input power of the PTC was 200 W, a cooling capacity of 9.2 W/60 K was achieved, demonstrating a relative Carnot efficiency of 18.3 %.

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12 W/60 K 高效同轴脉冲管低温冷却器的数值和实验研究

保持低温环境对红外探测器的可靠运行至关重要。为了满足在 60 K 左右低温环境中运行的长波红外探测器日益增长的需求，本研究通过模拟分析和实验方法研究了如何提高 60 K 同轴脉冲管低温冷却器（PTC）的效率。使用 Sage 软件开发了 PTC 模型，以优化冷指尺寸等参数。对内部流场的分析突出表明，冷头温度、频率和输入功率的变化对再生器内部的相角分布有显著影响。实验结果也得出了同样的结论，并证实了这些关键因素对 PTC 性能的影响。此外，当 PTC 的输入功率为 200 W 时，冷却能力为 9.2 W/60 K，相对卡诺效率为 18.3%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cryogenics 物理-热力学

CiteScore

3.80

自引率

9.50%

发文量

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