Design and integration of the DTT water coolant systems

IF 2 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Fusion Engineering and Design Pub Date : 2025-08-11 DOI:10.1016/j.fusengdes.2025.115347

M. Utili , A. Cucchiaro , P. Fusco , M. De Santis , A. Iaboni , P. Meller , M. Micheletti , N. Paganucci , A. Pizzuto , G.M. Polli

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引用次数: 0

Abstract

The primary water cooling system of Divertor Tokamak Test (DTT) facility consists of the circuit which directly cool down the plasma face components of the tokamak, the Inner, TOP and Outboard First Wall and Divertor modules. The systems have been designed in order to handle the maximum plasma heating power of 32.2MW from the First Wall and 30MW for the Divertor modules for 100 s and to perform the baking of the FW and DIV modules. The FW Water Coolant System (WCS) is constituted by the pumping system, heat exchanger storage tanks placed in the auxiliary building (building 174) and pipe lines, pressuriser, instrumentation and valves, placed in the torus hall (building 185). The FW-WCS can manage the total mass flow rate of 381kg/s at 60 °C in five lines: Inner standard and limiter FW; Top FW and Outboard FW Port 2 and Port 3. During the Light Baking the system will be operated at 130 °C and 200 °C during the Strong Baking. Instead, the Divertor WCS is able to manage the total mass flow rate of 577kg/s for the 54 standard divertor modules.

The WCSs have been designed and integrated in the vacuum vessel, cryostat and torus hall taking into account the requirements of the Remote Handling System and diagnostics.

The paper describes the thermo-fluid dynamic design of the FW and DIV primary Water Cooling Systems, the sizing of main components and pipes network and the integration inside DTT facility. The P&ID and 3D modeling in torus hall are presented.

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DTT水冷却系统的设计和集成

转向器托卡马克试验（DTT）设施的一次水冷却系统由直接冷却托卡马克等离子体面组件、内、顶、外第一壁和转向器模块的电路组成。该系统的设计目的是为了处理来自第一墙的32.2MW和分流器模块的30MW的最大等离子体加热功率，持续100秒，并执行FW和DIV模块的烘烤。FW水冷剂系统（WCS）由泵送系统、位于辅楼（174号楼）的热交换器储罐和位于环形大厅（185号楼）的管道、稳压器、仪表和阀门组成。FW- wcs可在60℃下控制总质量流量为381kg/s，分为5条线：内标和限位FW；Top FW和Outboard FW的端口2和端口3。在轻度烘焙期间，系统将在130°C和200°C下运行。相反，分流器WCS能够管理54个标准分流器模块的总质量流量为577kg/s。考虑到远程处理系统和诊断的要求，在真空容器、低温恒温器和环面大厅中设计和集成了wcs。本文介绍了FW和DIV一次水冷却系统的热流体动力学设计、主要部件和管网的选型以及DTT设备内部的集成。给出了环面厅的P&；ID和三维建模方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fusion Engineering and Design 工程技术-核科学技术

CiteScore

3.50

自引率

23.50%

发文量

275

审稿时长

3.8 months

期刊介绍： The journal accepts papers about experiments (both plasma and technology), theory, models, methods, and designs in areas relating to technology, engineering, and applied science aspects of magnetic and inertial fusion energy. Specific areas of interest include: MFE and IFE design studies for experiments and reactors; fusion nuclear technologies and materials, including blankets and shields; analysis of reactor plasmas; plasma heating, fuelling, and vacuum systems; drivers, targets, and special technologies for IFE, controls and diagnostics; fuel cycle analysis and tritium reprocessing and handling; operations and remote maintenance of reactors; safety, decommissioning, and waste management; economic and environmental analysis of components and systems.