European development of He-cooled divertors for fusion power plants
European development of He-cooled divertors for fusion power plants
复制标题
DOI：
10.1088/0029-5515/45/11/007
复制
发表时间：
2005-11
期刊：
影响因子：
3.3
通讯作者：
P. Norajitra;R. Giniyatulin;T. Ihli;G. Janeschitz;P. Karditsas;W. Krauss;R. Krüssmann;V. Kuznetsov-V.-Kuz
中科院分区：
文献类型：
--
作者：
P. Norajitra;R. Giniyatulin;T. Ihli;G. Janeschitz;P. Karditsas;W. Krauss;R. Krüssmann;V. Kuznetsov-V.-Kuz
出于安全原因，氦冷却偏滤器概念被认为适用于聚变发电厂，因为它们能够使用与任何包层概念兼容的冷却剂，因为水是不可接受的，例如与使用大量铍的陶瓷增殖包层有关。此外，它们允许高的冷却剂出口温度以提高功率转换系统的效率。在欧洲发电厂概念研究的框架内，意大利的ENEA Frascati和德国的Forschungszentrum Karlsruhe正在研究基于不同传热机制的不同氦冷偏滤器概念。它们基于模块化设计，有助于减少热应力。设计目标是承受约10-15 MW m-2的高热通量，该值被认为与ITER之后建造的未来聚变发电厂相关。偏滤器概念的开发和优化需要采用迭代设计方法，包括分析、研究材料和制造技术以及进行实验。这些问题和偏滤器研制的最新技术水平将是本报告的主题。
Helium-cooled divertor concepts are considered suitable for use in fusion power plants for safety reasons, as they enable the use of a coolant compatible with any blanket concept, since water would not be acceptable, e.g. in connection with ceramic breeder blankets using large amounts of beryllium. Moreover, they allow for a high coolant exit temperature for increasing the efficiency of the power conversion system. Within the framework of the European power plant conceptual study, different helium-cooled divertor concepts based on different heat transfer mechanisms are being investigated at ENEA Frascati, Italy, and Forschungszentrum Karlsruhe, Germany. They are based on a modular design which helps reduce thermal stresses. The design goal is to withstand a high heat flux of about 10–15 MW m−2, a value which is considered relevant to future fusion power plants to be built after ITER. The development and optimization of the divertor concepts require an iterative design approach with analyses, studies of materials and fabrication technologies and the execution of experiments. These issues and the state of the art of divertor development shall be the subject of this report.