A decision problem under uncertainty for nuclear power system development

1982 ◽  
Vol 6 (1) ◽  
pp. 47-59 ◽  
Author(s):  
M. Pavelescu ◽  
I. Ursu
2021 ◽  
Author(s):  
Evgeny Pavlovich Velikhov ◽  
Vladimir Dmitrievich Davidenko ◽  
Viktor Filippovich Tsybulskiy

Nuclear energy system development in the current century is considered in the article. The importance of this issue both for the future and for the choice of ways to solve current energy problems is high, which is largely due to the increasing environmental restrictions. Nuclear energy using promises negative impact of the energy system on enviroment minimizing. However, the danger of radiative pollution of the environment is a significant deterrent to the large scale industry development. The article discusses the problem of the nuclear power system development in the variant of the coordinated use of fission reactors for energy production and hybrid thermonuclear reactors for production of artificial fuel from thorium raw materials for fission reactors. Estimates are presented to substantiate the preferences of the structure of the nuclear power system under consideration.


1992 ◽  
Author(s):  
Hyop S. Rhee ◽  
Joseph R. Wetch ◽  
Norman Gunther ◽  
Robert R. Hobson ◽  
Cinian Zheng ◽  
...  

2020 ◽  
Vol 52 (1) ◽  
pp. 78-86
Author(s):  
Jingling Zhang ◽  
Daizhong Su ◽  
Yan Zhuang ◽  
Furong QIU

Author(s):  
Ersheng You ◽  
Lei Shi

Nuclear energy is a challenging and ambitious choice for space power system in contrast to solar and chemical fuel. It is able to realize high power and long operating time simultaneously to meet the need of potential applications. Aiming at the thermodynamic performances of the regenerative Brayton cycle with two-stage compression, the paper is objective to get a set of reasonable and competitive operating parameters for the design of the space nuclear power system. Thermodynamic process calculation is applied to analyze the relations of cycle efficiency and influence factors including compression ratio, gas temperature at cold side and hot side, recuperator efficiency, system pressure. The mass estimate model is established to calculate total mass and specific mass of the system with the variation of such design parameters. The calculating results using MATLAB code show that the optimal compression ratio of single compressor varies between 1.2 and 2 along with the other parameters. Either decreasing the cold side temperature or increasing the hot side temperature contributes to enhance the cycle efficiency to about 50%. When the recuperator efficiency changes from 60% to 98%, an ideal heat exchange efficiency, the efficiency corresponding to the optimal compression ratio increase from 35.8% to 52%. But the total mass will also rise from 9.1 tons to 29 tons. It is concluded that the system with cold side and hot side temperature of 450 K and 1300 K, recuperation efficiency of 80% is capable to obtain the maximum cycle efficiency of 36% and the system mass of 10.2 tons. Supposing a space nuclear power system with thermal power of 5 MW, the specific mass is only 5.8 kg/kWe, which indicates obvious technical and economic advantages.


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