Investigation on the pressure drop characteristics of ITER thermal shield cooling pipes

This paper presents the experimental results of the pressure drop through the cooling pipes of the ITER Thermal Shield (TS) panels. High pressure and room temperature nitrogen gas is selected for the experiment, which is equivalent operating condition with the 80 K helium gas from fluid mechanics po...

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Bibliographic Details
Published inFusion engineering and design Vol. 201; p. 114247
Main Author Nam, Kwanwoo
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2024
Subjects
Cooling pipe
Friction factor
ITER
Pressure drop
Thermal shield
Friction factor
Thermal shield
ITER
Pressure drop
Cooling pipe
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Summary:This paper presents the experimental results of the pressure drop through the cooling pipes of the ITER Thermal Shield (TS) panels. High pressure and room temperature nitrogen gas is selected for the experiment, which is equivalent operating condition with the 80 K helium gas from fluid mechanics point of view. Flow rate is set by a mass flow controller and pressure difference between the inlet and the outlet of the cooling pipe is measured by a differential pressure gauge. The experimental set-up is open loop type, which is connected to high pressure gas bottle. Flexible corrugated pipes are used to connect the TS cooling pipes with the measurement system line. The effect of the corrugated pipe is evaluated separately and excluded from the measurement results of the TS pipes. Test results of several TS panels are shown in this paper and are compared with the calculation using existing friction factor correlation and local loss coefficient of the pipe bends. The limitation of the calculation is discussed considering the hydrodynamic developing flow in the pipe routing.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2024.114247