Cooling water system design of Japan's DEMO for fusion power production

The Joint Special Design Team for Fusion DEMO

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Considering the water cooling system in fusion reactors, there are several fusion-specific challenges in designs of in-vessel components and their cooling water systems (CWS). In this research, solutions of the challenges have been discussed and indicate the CWS concept of Japan's DEMO. The CWS transfers thermal energy of blanket and a part of divertor to a generator system, and thermal energy of the other part of divertor is used as heat utilization in plant. The required performance of system devices such as pumps is expected to be achieved by proven technologies and its extensions. It is also indicated that blanket can work as the low-pass filter, and can suppress the effect of fusion output fluctuation. The designed cooling water system requires 70 MW electric power and generates 620 MW power with a 1.5 GW fusion power plasma. This research indicates the basic concept of Japan's DEMO CWS that can be practically achieved.

Original languageEnglish
Pages (from-to)110-115
Number of pages6
JournalFusion Engineering and Design
Volume126
DOIs
Publication statusPublished - 2018 Jan

Keywords

  • Cooling water system
  • DEMO
  • Fusion reactor design
  • Plant design
  • Power generation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

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