本发明公开一种采用液态金属磁流体发电换热器的空间核电系统及发电方法，属于能源综合利用领域。在该发明的核反应堆发电系统中除利用氦气发电，还通过利用液态金属的性质来进行发电，在磁流体发电换热器的换热管管内壁上下分别加上永磁铁，使换热管管内形成磁场，液态金属在磁场管道中流动，切割磁感线，在与气体进行换热的同时，也可以进行发电，同时由于管内电磁场和洛伦兹力等的综合影响，使得管内液态金属呈M型流速分布，从而也进一步提高了换热效率。并且在发电机失效，气体供应不足的情况下，也能够单独作为发电机使用，从而提高核反应堆发电系统的稳定性，安全性，并且提高能源利用率。

The invention discloses a space nuclear power system using a liquid metal magnetic fluid power generation heat exchanger and a power generation method, belonging to the field of comprehensive utilization of energy. In the nuclear reactor power generation system of the invention, in addition to using helium to generate electricity, the property of liquid metal is also used to generate electricity. Permanent magnets are added to the wall of the heat exchange tube of the magnetic fluid power generation heat exchanger respectively, so that a magnetic field is formed in the heat exchange tube. Liquid metal flows in the magnetic field pipe, cutting the magnetic inductance line, and electricity can be generated while heat is exchanged with gas. At the same time, due to the comprehensive influence of electromagnetic field and Lorentz force in the pipe, the liquid metal in the pipe presents an M-shaped flow velocity distribution, which further improves the heat transfer efficiency. And in case of generator failure and gas supply shortage, it can also be used as a generator alone, so as to improve the stability and safety of the nuclear reactor power generation system, and improve the efficiency of energy.