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China Megawatt space nuclear reactor has passed the acceptance test


May 12, 2010
China's first space nuclear reactor passes acceptance.

Daily reporter Changfeng Wu

On August 25th, "MW super-small liquid metal cooled space nuclear reactor power supply" led by academician Wu Yican of Chinese Academy of Sciences successfully passed the comprehensive performance evaluation of the project organized by the Ministry of Science and Technology.

Photo courtesy of interviewee

The comprehensive performance evaluation of this project is organized by the High-tech Research and Development Center of the Ministry of Science and Technology, and the evaluation experts are from China National Nuclear Corporation, China General Nuclear Power Corporation, State Power Investment Corporation, China Aerospace Science and Technology Corporation, Nuclear and Radiation Safety Center of the Ministry of Ecology and Environment, Tsinghua University, China Academy of Atomic Energy, Institute of Physics of Chinese Academy of Sciences, etc.

The expert group believes that the project results have formed a set of innovative design of megawatt lithium-cooled space nuclear reactor power supply with technical parameters at the international advanced level, and built a non-nuclear integrated principle prototype of lithium-cooled space nuclear reactor. The operating temperature is the highest in the world for similar devices, and a series of research results have been obtained in design software and digital prototype, process samples of key equipment, integrated principle prototype, etc., which provides an alternative technical route for the research and development of space nuclear reactor power supply in China, and helps to promote the innovation and development of space and nuclear energy technology in China.

After three years of hard work, the project partners successfully completed the power supply design scheme and non-nuclear integration principle prototype of the megawatt lithium-cooled space nuclear reactor at the international advanced level, developed the thermal system analysis, safety analysis, system simulation, transient analysis of physical and thermal coupling of the core, propulsion track design and other software of the lithium-cooled space nuclear reactor, and formed a digital prototype of the concept power supply of the lithium-cooled space nuclear reactor, and developed key equipment such as reactive compensation mechanism, heat exchanger, radiant radiator, liquid metal pump, high-efficiency power generation turbine and lightweight composite pipe fittings.

It is reported that this project focuses on the long-life small high-power demand of China's space deep space exploration, solves the problem of high-power space energy supply and propulsion, and provides the innovative implementation path of a new megawatt-class small space nuclear reactor power supply with inherent safety, intelligence and autonomous control, light weight and long life, which will promote the continuous improvement of China's space and nuclear energy technology and make an important contribution to China's space power.


科技日报记者 吴长锋








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