Cryogenics

1. Research data used in this research; 2. FORTRAN source program of MI-PSO.

This doc contains the calculation in more detail

The Files include 3 source programs of FORTRAN or Aspen plus, 2 processed data and 1 measured data about a 17000Nm3/h cryogenic air separation column.

The helium inlet is one of the most important components of the ITER Poloidal Field (PF) coils. The insulation structure of the helium inlet is critical to provide sufficient electrical and mechanical properties for a practical application. In this paper, an ITER PF6 coil double pancake helium inlet trial mock-up was designed and manufactured by simulating the actual manufacturing process. A thermal cycling test on the sample was carried out from 280 K to77 K, also before and after the thermal cycling, a turn-to-turn DC HV test and Paschen test were performed. The test results satisfied the ITER requirements. It has therefore been verified that the PF6 coil double pancake helium inlet insulation has good electrical properties, and can be applied to the formal production of the PF6 coil double pancakes.

The thermal conductivity of 7050 aluminum alloy subjected to solution, aging and deep cryogenic treatment was measured under the temperature ranging from 77 K to 300 K. Microstructure was also characterized to analyze the mechanism of the changes in thermal conductivity induced by different treatments. This work was also conducive to clarifying the mechanisms of deep cryogenic treatment on 7050 aluminum alloy based upon the physical essence.

Related Article: Jiahao Gao, Zuhua Chen, Xinqi Zheng, Guochun Zhang, Shilin Yu, Zhenxing Li, Heng Tu, Jun Shen|2024|Cryogenics|141|103875|doi:10.1016/j.cryogenics.2024.103875