Development of excel based static simulator for various test phases of iter prototype cryoline

The prototype of multi process pipe ITER cryoline will be tested at ITER-India laboratory to measure heat load at 5 K and 80 K level, thermal shield temperature profile, stresses at critical locations and temperature of outer vacuum jacket during Loss of Insulation Vacuum scenario.

The cold test of PTCL will be performed using helium gas to measure the heat load. Considering the complex thermo-hydraulics involved, Microsoft Excel, Hepak© and NIST material data has been integratedtodevelop the static simulator which performs detailed thermo-hydraulic calculations for various input data to estimate pressure and temperature profile of fluid along the process pipes of PTCL as well as to estimate the cooldown/warmup duration and total inventory of helium during the test.

The present paper describes the test set up, major phases of PTCL test, background calculations performed, various in-built options in the simulator and results for specific cases.