scholarly journals A NEW APPROACH TO THE DESIGN OF STEAM GENERATORS FOR MOLTEN SALT REACTOR POWER PLANTS.

1971 ◽  
Author(s):  
A. P. Fraas
Keyword(s):  
Molten Salt ◽  
Power Plants ◽  
Reactor Power ◽  
Molten Salt Reactor ◽  
Steam Generators ◽  
New Approach

A Potassium-Steam Binary Vapor Cycle for a Molten-Salt Reactor Power Plant

1966 ◽  
Vol 88 (4) ◽  
pp. 355-364 ◽  
Author(s):  
A. P. Fraas
Keyword(s):  
Molten Salt ◽  
Heat Exchangers ◽  
Reactor Power ◽  
Molten Salt Reactor ◽  
Binary Cycle ◽  
Pressure Steam ◽  
Potassium Vapor ◽  
And Performance ◽  
Steam Plant ◽  
Reactor Power Plant

A conceptual design for one embodiment of a binary vapor cycle coupled to a molten-salt reactor has been prepared to determine whether such a plant is sufficiently attractive to warrant further investigation. Its overall thermal efficiency is estimated to be 54 percent, while its heat rejection to the condensers is about half of that for a modern steam plant. The quantities of material required for the heat exchangers and piping for both a coal-fired supercritical-pressure steam plant and a nuclear-powered potassium vapor and supercritical-steam plant are estimated and compared along with the associated costs. The resulting cost and performance data indicate that the nuclear plant with a potassium-vapor and steam binary cycle may give both lower capital charges and a much higher overall efficiency than a coal-fired super-critical-pressure steam plant.

scholarly journals The Combined Power Generation in Pre-Start Thermostating Systems

2019 ◽  
Vol 8 (10) ◽  
pp. 1197-1201
Keyword(s):  
Power Generation ◽  
Power Plants ◽  
External Source ◽  
Reactor Power ◽  
Power Supplies ◽  
Launch Vehicles ◽  
Operational Parameters ◽  
Normal Functioning ◽  
New Approach ◽  
Solar Power Plants

Modern requirements to the operational parameters of pre-start thermostating systems require a new approach to their creation or upgrading. Therefore, there is a need to consider the possibilities of using the combined power generation in pre-start thermostating systems. Launch vehicles include the equipment that requires certain temperature conditions for operation, which modifies its characteristics and disrupts normal functioning. The temperature also determines the characteristics of onboard power supplies, the reliability of the engine units and pre-start thermostating systems. For the normal functioning of pre-start thermostating systems, it is necessary to supply various combinations of power for the spacecraft. The recent open access publications were considered, including the combined types of power generation in pre-start thermostating systems. The thermostating systems of spacecrafts should have several sources of power, i.e. the combined power generation in pre-start thermostating systems has not been considered yet. The examination of the possibilities of using the combined power generation in pre-start thermostating systems. The thermostatic systems for performing the functions of pre-start thermostating systems are to have several sources of energy that will increase the reliability of their operation. Energy can also be supplied from an external source, which is essential for pre-start thermostating systems, especially in launch units. The possibilities of using the combined power generation in pre-start thermostating systems are considered, providing the reliability increase of their functioning. The application of mechanical, thermal, electrochemical and solar power plants, as well as the use of nuclear isotope and reactor power plants is suggested

Numerical Investigation of Safety System Parameters in Molten Salt Reactor: Wall Effect on Freeze Valve Opening Time

2021 ◽  
Author(s):  
Muhammad Ilham ◽  
Indarta Kuncoro Aji ◽  
Tomio Okawa
Keyword(s):  
Molten Salt ◽  
Power Plants ◽  
Melting Process ◽  
Wall Effect ◽  
Fourth Generation ◽  
Reactor Wall ◽  
Molten Salt Reactor ◽  
Oak Ridge ◽  
Valve System ◽  
The Core

Abstract Molten Salt Reactor (MSRs) is one of the fourth generation Nuclear Power Plants with better capabilities and potentialities compared to previous generation, the enthusiasm for molten fuel reactor has been increasing around the world. MSRs has passive safety where if the core is overheating cause by accident event, the liquid salt fuel was required to be moved to the safety drain tank underneath the core vessel by gravity force. During this occasion, the freeze valve (FV) that formed in the pipe located between the core and drain tank must be melt out promptly to prevent the vessel to reach it is melting point. In this paper, we conduct on thermal analysis of the freeze valve at the solidification and melting process based on finite elements methods. The enthalpy-porosity method adopted by ANSYS Fluent was used to simulated the designed system at specified condition. The Oak Ridge National Laboratory of Molten Salt Reactor Experiment Freeze valve system was used as a references for parameters investigation. Using pipe wall thickness of 5 mm, 10 mm, and 15 mm to examined the wall effect to thermal properties of the designed freeze valve. The wall pipe for FV systems material was also investigate in order to examine its effect to the opening time. Further, the temperature distributions of the valve system were obtained and analyzed. It was found that the wall effect has significant impact to the solidification and melting process.

Transient Analyses of Passive Residual Heat Removal System of 10MW Molten Salt Reactor Experiment

2014 ◽  
Vol 953-954 ◽  
pp. 621-626
Author(s):  
Hang Bin Zhao ◽  
Chang Qi Yan ◽  
Li Cheng Sun ◽  
Kai Bin Zhao
Keyword(s):  
Molten Salt ◽  
Power Plants ◽  
Heat Removal ◽  
Molten Salt Reactor ◽  
Inherent Safety ◽  
Decay Heat ◽  
Reactor Experiment ◽  
Heat Removal System ◽  
Removal System ◽  
Residual Heat

In order to improve the inherent safety of the Molten Salt Reactor (MSR), a concept of passive residual heat removal system (PRHRS) for the 10MW Molten Salt Reactor Experiment (MSRE) was put forward. Its transient characteristics were investigated by developing a model of it using C++ code. The effects of environmental temperature, finned tube number and chimney height on the PRHRS were analyzed. The results show that the PRHRS can remove the decay heat timely. Three natural circulations are established in the PRHRS when it begins to operate. With the decay heat power reducing, the PRHRS can automatically adjust its heat removal ability. It needs not any external power for the PRHRS to operate, which enhances the inherent safety and reliability of the reactor, especially under the condition that power plants lose power.

Signatures of plutonium diversion in Molten Salt Reactor dynamics

2021 ◽  
Vol 160 ◽  
pp. 108370
Author(s):  
Alexander M. Wheeler ◽  
Ondřej Chvála ◽  
Steven Skutnik
Keyword(s):  
Molten Salt ◽  
Molten Salt Reactor ◽  
Reactor Dynamics

Analyses of production capacity of 89Sr and 90Sr in the 2 MW molten salt reactor

2021 ◽  
Vol 173 ◽  
pp. 109714
Author(s):  
Chen Wu ◽  
Chenggang Yu ◽  
Ao Zhang ◽  
Chunyan Zou ◽  
Yuwen Ma ◽  
...  
Keyword(s):  
Molten Salt ◽  
Production Capacity ◽  
Molten Salt Reactor
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