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News & Media

Latest ITER Newsline

  • Vacuum vessel | First segment completed in Korea

    The technically challenging fabrication of the ITER vacuum vessel is progressing in Korea, where Hyundai Heavy Industries has completed the first poloidal segme [...]

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  • Project progress | How do we know where we stand?

    If ITER were an ordinary project, like the building of a bridge, the construction of a highway or even the launching of a satellite into space, it would be rela [...]

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  • Radial walls| Thickest rebar and most intricate geometry

    The combined mass of the ITER Tokamak and its enveloping cryostat is equivalent to that of three Eiffel Towers. But not only is it heavy (23,000 tonnes) ... it [...]

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  • Next step | Japan revises its DEMO strategy

    In light of recent progress on the construction of ITER and developments in domestic fusion research, the Science and Technology Committee on Fusion Energy—part [...]

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  • Monaco-ITER Fellows | Campaign opens for the 6th generation

    The ink has only just dried on the second Monaco-ITER Partnership Arrangement. Funded by the Principality of Monaco, the Arrangement allows the ITER Organizatio [...]

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Of Interest

See archived articles

Evacuate and dissipate

If ITER were an industrial fusion plant, the better part of the heat generated by the burning plasmas would be used to produce pressurized steam and (by way of turbines and generators) electricity. Only residual heat would need to be dissipated.

Work is ongoing on one of the ''final links'' of the cooling water system: a vast (6,000 m²) zone that accommodates two large basins and a cooling tower installation made of 10 independent cells. Fabrication of the cooling tower elements has begun in India. (Click to view larger version...)
Work is ongoing on one of the ''final links'' of the cooling water system: a vast (6,000 m²) zone that accommodates two large basins and a cooling tower installation made of 10 independent cells. Fabrication of the cooling tower elements has begun in India.
But as an experimental installation, not designed to produce electricity, ITER will need to evacuate and dissipate all the power the fusion reaction generates.

And this means a lot. During the plasma burn phase, the amount of heat to be evacuated from the Tokamak and its auxiliary systems will be in the range of 1100 MW.

The complex system of piping, pumps, open and closed loops that form the ITER cooling water system ends up here, in a 6,000 m² area that accommodates cold and hot basins with a total volume of 20,000 m³ as well as an induced-draft cooling tower installation located above the cold basin.

Seen from above, the cooling water zone at the northeast end of the ITER site. (Click to view larger version...)
Seen from above, the cooling water zone at the northeast end of the ITER site.
These supersize pipes (one metre and more in diameter) for the heat rejection system are designed for a flow rate of two cubic metres per second. (Click to view larger version...)
These supersize pipes (one metre and more in diameter) for the heat rejection system are designed for a flow rate of two cubic metres per second.



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