Modular nitrogen boiling thermosyphons for multi-kiloampere current lead cooling

IF 2.1 3区工程技术 Q3 PHYSICS, APPLIED

Cryogenics Pub Date : 2025-09-03 DOI:10.1016/j.cryogenics.2025.104184

Jurrie Bruggeman , Jasper van der Werf , Benoit Curé , Alexey Dudarev , Weronika Gluchowska , Matthias Mentink

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Abstract

A high cooling power, low-complexity and passive system for pre-cooling of multi-kiloampere current leads for cryogenic applications with boiling nitrogen is presented. The system consists of a modular heat interceptor part with passively induced flow based on the thermosyphon effect, where evaporated nitrogen is vented into the atmosphere. This heat interceptor module may be placed between a normal conducting and superconducting cable, to substantially reduce the thermal load on a cryogenic setup. Two prototype heat interceptors with similar cross-sectional areas and boiling surface but different coolant channel geometries were designed, manufactured, and characterized. Both prototypes displayed a cold-end temperature below 79.3 K up to heat loads of 0.90 ± 0.09 kW for the wide flow-channel design and 1.25 ± 0.05 kW for the thin flow-channel design. The designed heat interceptors offer cooling capacities sufficient for intercepting heat loads from multi-kiloampere current leads without active pumping or flow regulation while being economical and relatively compact. This system can be useful when combined with cryocoolers, substantially reducing the load on the cold mass.

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用于数千安培电流铅冷却的模块化氮沸腾热虹吸管

提出了一种高冷却功率、低复杂性的无源系统，可用于沸腾氮低温应用中几千安培电流引线的预冷却。该系统由一个模块化的热拦截器部分组成，该部分基于热虹吸效应被动诱导流动，其中蒸发的氮被排放到大气中。这种热拦截器模块可以放置在普通导电电缆和超导电缆之间，以大大减少低温装置的热负荷。设计、制造和表征了两种具有相似截面积和沸腾面但不同冷却剂通道几何形状的原型热拦截器。两种原型的冷端温度均低于79.3 K，宽流道设计的热负荷为0.90±0.09 kW，薄流道设计的热负荷为1.25±0.05 kW。设计的热拦截器提供足够的冷却能力，可以拦截来自数千安培电流引线的热负荷，而无需主动泵送或流量调节，同时经济且相对紧凑。当与低温冷却器结合使用时，该系统是有用的，大大减少了冷质量的负荷。

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