Simulation of the cool-down process for the ESS cryogenic moderator system

被引：0

作者：

Tatsumoto, H. ^{[1
]}

Horvath, A. ^{[1
]}

Arnold, P. ^{[1
]}

Boros, M. ^{[1
]}

机构：

[1] European Spallat Source ESS ERIC, Partikelgatan 2, Lund, Sweden

来源：

ADVANCES IN CRYOGENIC ENGINEERING: PROCEEDINGS OF THE CRYOGENIC ENGINEERING CONFERENCE, CEC 2023 | 2024年 / 1301卷

关键词：

D O I：

10.1088/1757-899X/1301/1/012086

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The ESS cryogenic Moderator System (CMS) has been designed to supply a subcooled liquid hydrogen (17.5 K and 1.0 MPa) to two hydrogen moderators where the nuclear heating is estimated to be 6.7 kW (to be increased to four in the future). The CMS is cooled by a helium refrigerator system with a cooling power of 30.3 kW at 15 K. In this study, a one-dimensional simulation code has been developed to understand temperature behaviors during the cool-down process. The operational methods and parameters have been optimized. The CMS cool-down process is divided into three phases (I: gaseous hydrogen above 36 K, II: condensation from 36 to 31 K, and III: liquid hydrogen below 31 K). It turns out from the simulation result that the CMS would be able to be cooled down to the nominal condition of 17 K within 27 hours.

引用

页数：8

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