Speaker
Andre Kunze
(Institute for Neutron Physics and Reactor Technology)
Description
For the testing of helium cooled plasma facing components in HELOKA-HP homogeneous surface heat flux densities of up to 500 kW/m² have to be reproduced. It has been proposed to use infrared radiation heaters which consist of several quartz glass (fused silica) tubes with tungsten filaments inside to generate the heat flux. This paper presents a numerical model of the latest type of heater which has been investigated in the SIRHEX (“Surface Infrared Radiation Heating Experiment”) facility at KIT. The model uses a transient simulation to assess the heat flux distribution on the surface of the test mock-up. It is compared with the latest results from SIRHEX which show that the newest type and set-up of heaters can produce at least 300 kW/m² for a full run of an ITER-like load (3000 cycles with 400 s plateau and 600 s dwell time) without significant signs of degradation. With the experimentally confirmed model the heater set-up will be optimized for a homogeneous distribution also for higher heat loads for future tests of plasma facing components.
Co-authors
Andre Kunze
(Institute for Neutron Physics and Reactor Technology, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany)
Bradut-Eugen Ghidersa
(Institute for Neutron Physics and Reactor Technology, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany)
