Cold Test and Performance Evaluation of Prototype Cryoline-X

Cryogenic Engineering Conference 2017

材料科学;物理学

Shah, N.^1 ; Choukekar, K.^1 ; Kapoor, H.^1 ; Muralidhara, S.^1 ; Garg, A.^1 ; Kumar, U.^1 ; Jadon, M.^1 ; Dash, B.^1 ; Bhattachrya, R.^1 ; Badgujar, S.^1 ; Billot, V.^2 ; Bravais, P.^2 ; Cadeau, P.^2

ITER-India, Institute for Plasma Research, Near Indira Bridge, Bhat, Gandhinagar

382 428, India^1

Air Liquide Advanced Technologies, Rue De Clémencière, 2, Sassenage

38360, France^2

关键词: Cryogenic temperatures;    Enthalpy differences;    Multi-Processes;    Performance evaluations;    Regulatory requirements;    Risk mitigation;    Temperature profiles;    Thermal shields;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/278/1/012015/pdf
DOI  :  10.1088/1757-899X/278/1/012015

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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.