Startup characteristics of space nuclear power system with multiple Brayton loops from an electric perspective

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Design Pub Date : 2025-03-06 DOI:10.1016/j.nucengdes.2025.113959

Chuping Yang, Wenkui Ma, Yinan Geng, Xiaoyong Yang, Jie Wang

引用次数: 0

Abstract

The closed Brayton cycle (CBC) is a promising power conversion unit (PCU) to convert heat from the reactor to electric power for high-power space nuclear power system (SNPS) because of its high efficiency, small volume, light weight and stable operation. To ensure system redundancy and eliminate the gyrostatic effect, the SNPS usually uses multiple Brayton loops (SNPS-MBL), with each Brayton loop sharing one reactor. For the SNPS-MBL, the startup characteristic is an essential part. In this study, the simulation model of the startup was established. The startup processes of simultaneous startup and sequential startup for SNPS with dual Brayton loops (SNPS-DBL) were compared and analyzed from the electric perspective, and the effect of mechanical load torque on the startup process was further analyzed. This study provides a reference for the starting process of the SNPS from an electric perspective.

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来源期刊

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

CiteScore

3.40

自引率

11.80%

发文量

377

审稿时长

5 months

期刊介绍： Nuclear Engineering and Design covers the wide range of disciplines involved in the engineering, design, safety and construction of nuclear fission reactors. The Editors welcome papers both on applied and innovative aspects and developments in nuclear science and technology. Fundamentals of Reactor Design include: • Thermal-Hydraulics and Core Physics • Safety Analysis, Risk Assessment (PSA) • Structural and Mechanical Engineering • Materials Science • Fuel Behavior and Design • Structural Plant Design • Engineering of Reactor Components • Experiments Aspects beyond fundamentals of Reactor Design covered: • Accident Mitigation Measures • Reactor Control Systems • Licensing Issues • Safeguard Engineering • Economy of Plants • Reprocessing / Waste Disposal • Applications of Nuclear Energy • Maintenance • Decommissioning Papers on new reactor ideas and developments (Generation IV reactors) such as inherently safe modular HTRs, High Performance LWRs/HWRs and LMFBs/GFR will be considered; Actinide Burners, Accelerator Driven Systems, Energy Amplifiers and other special designs of power and research reactors and their applications are also encouraged.