High Efficiency Nuclear Power Plants Using Liquid Fluoride Thorium Reactor Technology

2021 ◽

Vol 2096 (1) ◽

pp. 012193

Author(s):

A N Egorov

Keyword(s):

Fuel Cells ◽

Nuclear Power ◽

Peak Power ◽

Power Plants ◽

Nuclear Power Plants ◽

High Efficiency ◽

Combustion Technology ◽

Power Complex ◽

Electrolysis Mode ◽

Current Stage

Abstract The article provides a comparative analysis of the efficiency of off-peak electricity conversion at nuclear power plants (NPP) using reversible fuel cells (RFC). The RFC can ensure the NPP the baseline electrical load through hydrogen production by electrolysis of water, as well as an increase in its maneuverability due to generation of peak electricity. The calculations have shown that at the current stage of technological advancements, the use of RFCs in terms of achievable efficiency of off-peak electricity conversion has advantages over the hydrogen power complex which utilizes an additional steam turbine to generate peak electricity. The achievable advantage equals 2.84-4.25% and 7.72-11.58% at the RFC efficiency in the mode of peak power generation of 50% and 60%, respectively, which is 5.1-7.66 MW and 13.9-20.85 MW more than the generated peak electricity. It should be noted that an increase in the electrolysis mode efficiency facilitates the RFC advantages – from 24.44 to 36.65% and from 29.32 to 43.98% respectively. The use of the "cold" combustion technology for hydrogen fuel ensures not only high efficiency, but also reliability and safety of the hydrogen power complex operation

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Reactor Technology Rationale for Construction of Substitution and New Power Units in Ukraine after 2035

Nuclear Power and the Environment ◽

10.31717/2311-8253.20.3.2 ◽

2020 ◽

Vol 18 ◽

pp. 10-22

Author(s):

Y. M. Niearonov ◽

◽

T. Y. Baybuzenko ◽

V. Y. Shenderovych ◽

M. I. Vlasenko ◽

...

Keyword(s):

Nuclear Power ◽

Power Plants ◽

Nuclear Power Plants ◽

Renewable Energy Sources ◽

Estimation Algorithm ◽

Original Data ◽

Comparative Assessment ◽

Energy Agency ◽

Reactor Technology ◽

Installed Capacity

An algorithm of selecting the reactor technology type were constructed. The algorithm is based on a comparative assessment of the respective nuclear power plants. The formation of qualitative and quantitative criteria is performed for the estimation algorithm. Tools of the International Atomic Energy Agency (IAEA) INPRO-KIND project on multi-criteria comparative assessment of nuclear power plants for ranking the obtained results were adapted. The sensitivity analysis of the obtained results to change of numerical values and weight of criteria is carried out. The choice of the type of reactor technology for construction in Ukraine after 2035 is substantiated. It is shown that PWR and SMR reactor technologies in Ukraine are the most promising direction in the development of nuclear energy in Ukraine. Taking into account the factors of uncertainty and sensitivity to the values of the original data and possible risks, results of the analysis shows that there is a trend of advantages of SMR reactors, which generally have higher ratings compared to PWR, BWR and HWR. At the same time, the level of multi-criteria ratings of PWR reactors is close to SMR reactors. Making a further decision on the type of reactor technology for the conditions of Ukraine, it is necessary to take into account the possibility of its maximal total installed capacity deployment. It is necessary to conduct a separate study to determine the optimal ratio of reactor technologies PWR and SMR in the power system of Ukraine, taking into account the prospects for the deployment of renewable energy sources.

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High Effieciency Nuclear Power Plants Using Liquid Fluoride Thorium Reactor Technology

6th International Energy Conversion Engineering Conference (IECEC) ◽

10.2514/6.2008-5699 ◽

2008 ◽

Author(s):

Albert Juhasz

Keyword(s):

Nuclear Power ◽

Power Plants ◽

Nuclear Power Plants ◽

Reactor Technology

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Development of Technologies on Innovative-Simplified Nuclear Power Plant Using High-Efficiency Steam Injectors: Part 9—System Outline and Endurance Test of Low-Pressure Steam Injectors

Volume 3: Structural Integrity; Nuclear Engineering Advances; Next Generation Systems; Near Term Deployment and Promotion of Nuclear Energy ◽

10.1115/icone14-89391 ◽

2006 ◽

Author(s):

Shuichi Ohmori ◽

Michitsugu Mori ◽

Shoji Goto ◽

Tadashi Narabayashi ◽

Chikako Iwaki ◽

...

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Direct Contact ◽

Nuclear Power ◽

Power Plants ◽

Nuclear Power Plants ◽

High Efficiency ◽

Low Pressure ◽

Injection System ◽

System A

A Steam Injector (SI) is a simple, compact and passive pump and also acts as a high-performance direct-contact compact heater. This provides SI with capability to serve also as a direct-contact feedwater heater that heats up feedwater by using extracted steam from the turbine. We are developing technology for “Innovative Simplified Nuclear Power Plants” in order to further improve the economy and safety of nuclear power plants. Our technology development aims to significantly simplify equipment and reduce physical quantities by applying “High-Efficiency SI”, which are applicable to a wide range of operation regimes beyond the performance and applicable range of existing SIs and enables unprecedented multistage and parallel operation, to the low-pressure feedwater heaters and Emergency Core Cooling Systems (ECCS) of nuclear power plants, as well as achieve high inherent safety to prevent severe accidents by keeping the core covered with water (a Severe Accident-Free Concept). The innovative-simplified nuclear power plant consists of a simplified feedwater heating system, a passive core injection system and a passive containment cooling system. This report describes the results of the endurance and performance tests of low-pressure SIs for feedwater heaters with Jet-deaerator and core injection system. A part of this report are fruits of research which is carried out by Tokyo Electric Power Company (TEPCO), Toshiba, and 7 Universities in Japan, funded from the Ministry of Economy, Trade and Industry (METI) of Japan as the national public research-funded program.

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