A closed-cycle dilution refrigerator for space applications
A closed-cycle dilution refrigerator for space applications
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DOI：
10.1016/j.cryogenics.2012.05.004
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发表时间：
2012-10-01
期刊：
影响因子：
2.1
通讯作者：
Vermeulen, Gerard
中科院分区：
文献类型：
--
作者：
Chaudhry, Gunaranjan;Volpe, Angela;Vermeulen, Gerard
我们讨论了一种重力不敏感稀释制冷机的开发，该制冷机改编自用于普朗克任务的开式循环制冷机。由于 He-3 和 He-4 成分是循环的（He-4 通过在大约 2 K 下运行的喷泉效应泵实现，He-3 通过在室温下运行的压缩机实现）而不是喷射到太空中，因此闭路循环制冷机的使用寿命不受可用 He-3 和 He-4 数量的限制。在这项工作中，我们专注于冰箱冷端（逆流热交换器和混合室）的设计和性能。我们讨论热交换器的尺寸并介绍冷却功率测量。我们详细介绍喷泉泵的工作原理。我们还简要讨论了一些实际问题，包括 He-3 压缩机的选择和稀释制冷机的预冷要求。 (c) 2012 Elsevier Ltd. 保留所有权利。
We discuss the development of a gravity-insensitive dilution refrigerator adapted from the open-cycle refrigerator used for the Planck mission. Since the He-3 and He-4 components are circulated (the He-4 by a fountain-effect pump operating at about 2 K, the He-3 by a compressor at room temperature) rather than ejected into space, the lifetime of a closed-cycle refrigerator is not limited by the quantity of He-3 and He-4 available. In this work, we concentrate on the design and performance of the cold end (counterflow heat exchanger and mixing chamber) of the refrigerator. We discuss the sizing of the heat exchanger and present cooling power measurements. We detail the working of the fountain pump. We also briefly touch upon some practical issues including the choice of a He-3 compressor and the pre-cooling requirements for the dilution refrigerator. (c) 2012 Elsevier Ltd. All rights reserved.