Technology Development Roadmap For The Advanced High Temperature Reactor Secondary Heat Exchanger
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Technology Development Roadmap For The Advanced High Temperature Reactor Secondary Heat Exchanger
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Author :
language : en
Publisher:
Release Date : 2012
Technology Development Roadmap For The Advanced High Temperature Reactor Secondary Heat Exchanger written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
This Technology Development Roadmap (TDRM) presents the path forward for deploying large-scale molten salt secondary heat exchangers (MS-SHX) and recognizing the benefits of using molten salt as the heat transport medium for advanced high temperature reactors (AHTR). This TDRM will aid in the development and selection of the required heat exchanger for: power production (the first anticipated process heat application), hydrogen production, steam methane reforming, methanol to gasoline production, or ammonia production. This TDRM (a) establishes the current state of molten salt SHX technology readiness, (b) defines a path forward that systematically and effectively tests this technology to overcome areas of uncertainty, (c) demonstrates the achievement of an appropriate level of maturity prior to construction and plant operation, and (d) identifies issues and prioritizes future work for maturing the state of SHX technology. This study discusses the results of a preliminary design analysis of the SHX and explains the evaluation and selection methodology. An important engineering challenge will be to prevent the molten salt from freezing during normal and off-normal operations because of its high melting temperature (390°C for KF ZrF4). The efficient transfer of energy for industrial applications depends on the ability to incorporate cost-effective heat exchangers between the nuclear heat transport system and industrial process heat transport system. The need for efficiency, compactness, and safety challenge the capabilities of existing heat exchanger technology. The description of potential heat exchanger configurations or designs (such as printed circuit, spiral or helical coiled, ceramic, plate and fin, and plate type) were covered in an earlier report (Sabharwall et al. 2011). Significant future work, much of which is suggested in this report, is needed before the benefits and full potential of the AHTR can be realized. The execution of this TDRM will focuses research efforts on the near-term qualification, selection, or maturation strategy as detailed in this report. Development of the integration methodology feasibility study, along with research and development (R & D) needs, are ongoing tasks that will be covered in the future reports as work progresses. Section 2 briefly presents the integration of AHTR technology with conventional chemical industrial processes., See Idaho National Laboratory (INL) TEV-1160 (2011) for further details.
Secondary Heat Exchanger Design And Comparison For Advanced High Temperature Reactor
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Author :
language : en
Publisher:
Release Date : 2012
Secondary Heat Exchanger Design And Comparison For Advanced High Temperature Reactor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
The goals of next generation nuclear reactors, such as the high temperature gas-cooled reactor and advance high temperature reactor (AHTR), are to increase energy efficiency in the production of electricity and provide high temperature heat for industrial processes. The efficient transfer of energy for industrial applications depends on the ability to incorporate effective heat exchangers between the nuclear heat transport system and the industrial process heat transport system. The need for efficiency, compactness, and safety challenge the boundaries of existing heat exchanger technology, giving rise to the following study. Various studies have been performed in attempts to update the secondary heat exchanger that is downstream of the primary heat exchanger, mostly because its performance is strongly tied to the ability to employ more efficient conversion cycles, such as the Rankine super critical and subcritical cycles. This study considers two different types of heat exchangers--helical coiled heat exchanger and printed circuit heat exchanger--as possible options for the AHTR secondary heat exchangers with the following three different options: (1) A single heat exchanger transfers all the heat (3,400 MW(t)) from the intermediate heat transfer loop to the power conversion system or process plants; (2) Two heat exchangers share heat to transfer total heat of 3,400 MW(t) from the intermediate heat transfer loop to the power conversion system or process plants, each exchanger transfers 1,700 MW(t) with a parallel configuration; and (3) Three heat exchangers share heat to transfer total heat of 3,400 MW(t) from the intermediate heat transfer loop to the power conversion system or process plants. Each heat exchanger transfers 1,130 MW(t) with a parallel configuration. A preliminary cost comparison will be provided for all different cases along with challenges and recommendations.
Process Heat Exchanger Options For The Advanced High Temperature Reactor
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Author :
language : en
Publisher:
Release Date : 2011
Process Heat Exchanger Options For The Advanced High Temperature Reactor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
The work reported herein is a significant intermediate step in reaching the final goal of commercial-scale deployment and usage of molten salt as the heat transport medium for process heat applications. The primary purpose of this study is to aid in the development and selection of the required heat exchanger for power production and process heat application, which would support large-scale deployment.
Feasibility Study Of Secondary Heat Exchanger Concepts For The Advanced High Temperature Reactor
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Author :
language : en
Publisher:
Release Date : 2011
Feasibility Study Of Secondary Heat Exchanger Concepts For The Advanced High Temperature Reactor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
The work reported herein represents a significant step in the preliminary design of heat exchanger options (material options, thermal design, selection and evaluation methodology with existing challenges). The primary purpose of this study is to aid in the development and selection of the required heat exchanger for power production using either a subcritical or supercritical Rankine cycle.
Analysis Of Transients And Control Of Advanced High Temperature Reactor Coupled Heat Exchangers System
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Author : Isaac James Skavdahl
language : en
Publisher:
Release Date : 2016
Analysis Of Transients And Control Of Advanced High Temperature Reactor Coupled Heat Exchangers System written by Isaac James Skavdahl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Nuclear reactors categories.
Control of advanced reactor system consisting of a nuclear reactor, an intermediate heat exchanger (IHX), and a secondary heat exchanger (SHX) is investigated in this research. Initial transient analysis of the system was conducted using commercially available process simulation softwares PRO-II and DYNSIM. System parameters of significance--controlled and manipulated variables--were identified, and a control strategy was developed to maintain the controlled variables at their set points. The system response was simulated for various load disturbances, initially for the coupled heat exchangers system, followed by incorporation of the reactor dynamics in the system. Alternate strategies to control the temperature entering the process or power conversion unit (PCU) by either manipulating the secondary loop flow rate, controlling reactor power, or a combination of the two methods were investigated. Combining both methods of control showed great utility in controlling the temperature entering the process and may be an ideal method for control.
Thermal Transport And Heat Exchanger Design For The Space Molten Salt Reactor Concept
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Author : Justin M. Flanders
language : en
Publisher:
Release Date : 2012
Thermal Transport And Heat Exchanger Design For The Space Molten Salt Reactor Concept written by Justin M. Flanders and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Abstract: Surface power and nuclear electric propulsion in space necessitate the development of high energy density, long term continuous power sources. Research at The Ohio State University under the NASA Ralph Steckler Space Grant Colonization Research and Technology Development Opportunity has identified molten salt reactors (MSRs) as a potentially appealing technology for high power, high temperature space fission systems. This thesis examines component specific design related to thermal transport in an attempt to further establish the feasibility of MSRs in space. Specifically, the optimization of the associated heat exchangers for a Brayton power cycle is discussed in detail. In addition, power cycle and secondary coolant selection, material selection, and general MSR design considerations are discussed. The primary heat exchanger was optimized to maximize the margin to super prompt critical (MSPC), with a final MSPC equal to 513 pcm. The secondary and tertiary heat exchangers were optimized to minimize helium pressure drop, with a combined pressure loss of 2.62 kPa obtained.
Fluoride Salt Cooled High Temperature Reactor Technology Development And Demonstration Roadmap
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Author :
language : en
Publisher:
Release Date : 2013
Fluoride Salt Cooled High Temperature Reactor Technology Development And Demonstration Roadmap written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Fluoride salt-cooled High-temperature Reactors (FHRs) are an emerging reactor class with potentially advantageous performance characteristics, and fully passive safety. This roadmap describes the principal remaining FHR technology challenges and the development path needed to address the challenges. This roadmap also provides an integrated overview of the current status of the broad set of technologies necessary to design, evaluate, license, construct, operate, and maintain FHRs. First-generation FHRs will not require any technology breakthroughs, but do require significant concept development, system integration, and technology maturation. FHRs are currently entering early phase engineering development. As such, this roadmap is not as technically detailed or specific as would be the case for a more mature reactor class. The higher cost of fuel and coolant, the lack of an approved licensing framework, the lack of qualified, salt-compatible structural materials, and the potential for tritium release into the environment are the most obvious issues that remain to be resolved.
Preliminary Design For Conventional And Compact Secondary Heat Exchanger In A Molten Salt Reactor
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Author :
language : en
Publisher:
Release Date : 2012
Preliminary Design For Conventional And Compact Secondary Heat Exchanger In A Molten Salt Reactor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
The strategic goal of the Advance Reactors such as AHTR is to broaden the environmental and economic benefits of nuclear energy in the United States by producing power to meet growing energy demands and demonstrating its applicability to market sectors not being served by light water reactors.
Current Status Of The Advanced High Temperature Reactor
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Author :
language : en
Publisher:
Release Date : 2012
Current Status Of The Advanced High Temperature Reactor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
The Advanced High Temperature Reactor (AHTR) is a design concept for a central station type [1500 MW(e)] Fluoride salt-cooled High-temperature Reactor (FHR) that is currently under development by Oak Ridge National Laboratory for the U.S. Department of Energy, Office of Nuclear Energy's Advanced Reactor Concepts program. FHRs, by definition, feature low-pressure liquid fluoride salt cooling, coated-particle fuel, a high-temperature power cycle, and fully passive decay heat rejection. The overall goal of the AHTR development program is to demonstrate the technical feasibility of FHRs as low-cost, large-size power producers while maintaining full passive safety. The AHTR design option exploration is a multidisciplinary design effort that combines core neutronic and fuel configuration evaluation with structural, thermal, and hydraulic analysis to produce a reactor and vessel concept and place it within a power generation station. The AHTR design remains at the notional level of maturity, as key technologies require further development and a logically complete integrated design has not been finalized. The present design space exploration, however, indicates that reasonable options exist for the AHTR core, primary heat transport path, and fuel cycle provided that materials and systems technologies develop as anticipated.
Handbook Of Generation Iv Nuclear Reactors
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Author : Igor Pioro
language : en
Publisher: Woodhead Publishing
Release Date : 2022-12-07
Handbook Of Generation Iv Nuclear Reactors written by Igor Pioro and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-07 with Technology & Engineering categories.
Handbook of Generation IV Nuclear Reactors, Second Edition is a fully revised and updated comprehensive resource on the latest research and advances in generation IV nuclear reactor concepts. Editor Igor Pioro and his team of expert contributors have updated every chapter to reflect advances in the field since the first edition published in 2016. The book teaches the reader about available technologies, future prospects and the feasibility of each concept presented, equipping them users with a strong skillset which they can apply to their own work and research. Provides a fully updated, revised and comprehensive handbook dedicated entirely to generation IV nuclear reactors Includes new trends and developments since the first publication, as well as brand new case studies and appendices Covers the latest research, developments and design information surrounding generation IV nuclear reactors