Design of the Cooling Water System Upgrade for 42T Resistive Magnet at the CHMFL

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-11 DOI:10.1115/1.4065919

Jiali Tang, Ming Fang, Chenfei Zhou, Peng Zhou

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Abstract

In order to meet the operation requirements of the 42 Tesla(T) resistive magnet which will be built by Chinese High Magnetic Field Laboratory(CHMFL) in future, the cooling water system needs to be upgraded accordingly. The cooling water system will improve its performance based on the existing cooling system. This paper will make a detailed analysis about the system upgrading and transformation plan. In terms of the refrigeration, in order to meet the requirements of larger refrigeration temperature difference, a new centrifugal chiller with large temperature difference will be added in series with the existing unit of the refrigeration. With the increase of heat load, the system will connect a new plate heat exchanger in parallel on the basis of the original heat exchange capacity. However, the circulating cooling water flow rate of the 42 T resistive magnet is expected to exceed 1200 m3/h, the purification flow rate of the de-ionized water also need to be upgraded, and the purification ratio is expected to reach more than 6%. In addition, the control system will be also combined with the new equipment and pipelines to realize a variety of chilled water storage and supply modes to better meet the operation of the new-built magnet.

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CHMFL 42T 电阻磁体冷却水系统升级设计

为满足中国高磁场实验室（CHMFL）未来建设的 42 特斯拉（T）电阻磁体的运行要求，需要对冷却水系统进行相应升级。冷却水系统将在现有冷却系统的基础上提高其性能。本文将对系统的升级改造方案进行详细分析。在制冷方面，为满足更大制冷温差的要求，将新增一台大温差离心式冷水机组与现有制冷机组串联。随着热负荷的增加，系统将在原有换热能力的基础上并联一台新的板式换热器。但 42 T 电阻磁体的循环冷却水流量预计将超过 1200 m3/h，去离子水的净化流量也需要升级，净化率预计将达到 6% 以上。此外，控制系统还将结合新设备和管道，实现多种冷冻水储存和供应模式，以更好地满足新建磁体的运行需要。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.