Advanced power core system for the ARIES-AT power plant (DOI:10.1016/j.fusengdes.2005.06.356)

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Abstract

The ARIES-AT power core was evolved with the overall objective of achieving high performance while maintaining attractive safety features, credible maintenance and fabrication processes, and reasonable design margins as a rough indication of reliability. The blanket and divertor designs are based on Pb-17Li as coolant and breeder, and low-activation SiCf/SiC as structural material. Flowing Pb-17Li in series through the divertor and blanket is appealing since it simplifies the coolant routing and minimize the number of cooling systems. However, Pb-17Li provides marginal heat transfer performance in particular in the presence of MHD effects and the divertor design had to be adapted to accommodate the peak design heat flux of 5 MW/m2. The blanket flow scheme enables operating Pb-17Li at a high outlet temperature (about 1100 °C) for high power cycle efficiency while maintaining SiCf/SiC at a substantially lower temperature consistent with allowable limits. Waste minimization and additional cost savings are achieved by radially subdividing the blanket into two zones: a replaceable first zone and a life of plant second zone. Maintenance methods have been investigated which allow for end-of-life replacement of individual components. This paper summarizes the results of the design study of the ARIES-AT power core focusing on the blanket and divertor and including a discussion of the key parameters influencing the design, such as the SiCf/SiC properties and the MHD effects, and a description of the design configuration, analysis results and reference operating parameters. © 2007 Elsevier B.V. All rights reserved.

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Raffray, A. R., El-Guebaly, L., Malang, S., Sviatoslavsky, I., Tillack, M. S., & Wang, X. (2007, February). Advanced power core system for the ARIES-AT power plant (DOI:10.1016/j.fusengdes.2005.06.356). Fusion Engineering and Design. https://doi.org/10.1016/j.fusengdes.2007.01.002

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