Efficiency mark of the two-product power complex of nuclear power plant

• Published in: Journal of physics. Conference series 2017-11, Vol.891 (1), p.12178
• Main Authors: Khrustalev, V A, Suchkov, V M
• Format: Article
• Language: English
• Subjects: Capacity factor; Coastal zone; Condensates; Desalination; Distillates; Distillation; Distilled water; Economic analysis; Electrical loads; Fresh water; Freshwater resources; Geographical locations; Graphs; Low pressure; Nuclear power plants; Nuclear reactors; Payback periods; Physics; Pressurized water reactors; Time of use electricity pricing; Turbines; Working fluids
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/891/1/012178

The article discusses the combining nuclear power plants (NPP) with pressurized water reactors and distillation-desalination plants (DDP), their joint mode of operation during periods of coating failures of the electric power load graphs and thermo-economical efficiency. Along with the release of heat and generation of electric energy a desalination complex with the nuclear power plant produces distillate. Part of the selected steam "irretrievably lost" with a mix of condensation of this vapor in a desalination machine with a flow of water for distillation. It means that this steam transforms into condition of acquired product - distillate. The article presents technical solutions for the return of the working fluid for turbine К-1000-60/1500-2 и К-1200-6,8/50, as well as permissible part of low pressure regime according to the number of desalination units for each turbine. Patent for the proposed two-product energy complex, obtained by Gagarin State Technical University is analyzed. The energy complex has such system advantages as increasing the capacity factor of a nuclear reactor and also allows to solve the problem of shortage of fresh water. Thermo-economics effectiveness of this complex is determined by introducing a factor-"thermo-economic index". During analyzing of the results of the calculations of a thermo-economic index we can see a strong influence of the cost factor of the distillate on the market. Then higher participation of the desalination plant in coverage of the failures of the graphs of the electric loading then smaller the payback period of the NPP. It is manifested more clearly, as it's shown in the article, when pricing options depend on time of day and the configuration of the daily electric load diagram. In the geographical locations of the NPPs with PWR the Russian performance in a number of regions with low freshwater resources and weak internal electrical connections combined with DDP might be one of the ways to improve the competitiveness of NPPs, especially for foreign coastal areas.