Cold Test and Performance Evaluation of Prototype Cryoline-X

N. Shah, K. Choukekar, H. Kapoor, S. Muralidhara, A. Garg, U. Kumar, M. Jadon, B. Dash, R. Bhattachrya, S. Badgujar, V. Billot, P. Bravais, P. Cadeau

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

The multi-process pipe vacuum jacketed cryolines for the ITER project are probably world's most complex cryolines in terms of layout, load cases, quality, safety and regulatory requirements. As a risk mitigation plan, design, manufacturing and testing of prototype cryoline (PTCL) was planned before the approval of final design of ITER cryolines. The 29 meter long PTCL consist of 6 process pipes encased by thermal shield inside Outer Vacuum Jacket of DN 600 size and carries cold helium at 4.5 K and 80 K. The global heat load limit was defined as 1.2 W/m at 4.5 K and 4.5 W/m at 80 K. The PTCL-X (PTCL for Group-X cryolines) was specified in detail by ITER-India and designed as well as manufactured by Air Liquide. PTCL-X was installed and tested at cryogenic temperature at ITER-India Cryogenic Laboratory in 2016. The heat load at 4.5 K and 80 K, estimated using enthalpy difference method, was found to be approximately 0.8 W/m at 4.5 K, 4.2 W/m at 80 K, which is well within the defined limits. Thermal shield temperature profile was also found to be satisfactory. Paper summarizes the cold test results of PTCL-X.

Original languageEnglish
Article number012015
JournalIOP Conference Series: Materials Science and Engineering
Volume278
Issue number1
DOIs
StatePublished - Dec 30 2017
Externally publishedYes
Event2017 Cryogenic Engineering Conference, CEC 2017 - Madison, United States
Duration: Jul 9 2017Jul 13 2017

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