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Simplified Methodology To Estimate The Maximum Liquid Helium Lhe Cryostat Pressure From A Vacuum Jacket Failure
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Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781794002159 Total Pages :34 pages Book Rating :4.0/5 (21 download)
Book Synopsis Simplified Methodology to Estimate the Maximum Liquid Helium (Lhe) Cryostat Pressure from a Vacuum Jacket Failure by : National Aeronautics and Space Adm Nasa
Download or read book Simplified Methodology to Estimate the Maximum Liquid Helium (Lhe) Cryostat Pressure from a Vacuum Jacket Failure written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-13 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aircraft-based Stratospheric Observatory for Infrared Astronomy (SOFIA) is a platform for multiple infrared astronomical observation experiments. These experiments carry sensors cooled to liquid helium temperatures. The liquid helium supply is contained in large (i.e., 10 liters or more) vacuum-insulated dewars. Should the dewar vacuum insulation fail, the inrushing air will condense and freeze on the dewar wall, resulting in a large heat flux on the dewar's contents. The heat flux results in a rise in pressure and the actuation of the dewar pressure relief system. A previous NASA Engineering and Safety Center (NESC) assessment provided recommendations for the wall heat flux that would be expected from a loss of vacuum and detailed an appropriate method to use in calculating the maximum pressure that would occur in a loss of vacuum event. This method involved building a detailed supercritical helium compressible flow thermal/fluid model of the vent stack and exercising the model over the appropriate range of parameters. The experimenters designing science instruments for SOFIA are not experts in compressible supercritical flows and do not generally have access to the thermal/fluid modeling packages that are required to build detailed models of the vent stacks. Therefore, the SOFIA Program engaged the NESC to develop a simplified methodology to estimate the maximum pressure in a liquid helium dewar after the loss of vacuum insulation. The method would allow the university-based science instrument development teams to conservatively determine the cryostat's vent neck sizing during preliminary design of new SOFIA Science Instruments. This report details the development of the simplified method, the method itself, and the limits of its applicability. The simplified methodology provides an estimate of the dewar pressure after a loss of vacuum insulation that can be used for the initial design of the liquid helium dewar vent stacks. However, since it is not an exact t
Book Synopsis Simplified Methodology to Estimate the Maximum Liquid Helium (LHe) Cryostat Pressure from a Vacuum Jacket Failure by : W. Lance Richards
Download or read book Simplified Methodology to Estimate the Maximum Liquid Helium (LHe) Cryostat Pressure from a Vacuum Jacket Failure written by W. Lance Richards and published by . This book was released on 2015 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Helium Pressures in RHIC Vacuum Cryostats and Relief Valve Requirements from Magnet Cooling Line Failure by :
Download or read book Helium Pressures in RHIC Vacuum Cryostats and Relief Valve Requirements from Magnet Cooling Line Failure written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A catastrophic failure of the RHIC magnet cooling lines, similar to the LHC superconducting bus failure incident, would pressurize the insulating vacuum in the magnet and transfer line cryostats. Insufficient relief valves on the cryostats could cause a structural failure. A SINDA/FLUINT{reg_sign} model, which simulated the 4.5K/4 atm helium flowing through the magnet cooling system distribution lines, then through a line break into the vacuum cryostat and discharging via the reliefs into the RHIC tunnel, had been developed to calculate the helium pressure inside the cryostat. Arc flash energy deposition and heat load from the ambient temperature cryostat surfaces were included in the simulations. Three typical areas: the sextant arc, the Triplet/DX/D0 magnets, and the injection area, had been analyzed. Existing relief valve sizes were reviewed to make sure that the maximum stresses, caused by the calculated maximum pressures inside the cryostats, did not exceed the allowable stresses, based on the ASME Code B31.3 and ANSYS results. The conclusions are as follows: (1) The S/F simulation results show that the highest internal pressure in the cryostats, due to the magnet line failure, is ≈37 psig (255115 Pa); (2) Based on the simulation, the temperature on the cryostat chamber, INJ Q8-Q9, could drop to 228 K, which is lower than the material minimum design temperature allowed by the Code; (3) Based on the ASME Code and ANSYS results, the reliefs on all the cryostats inside the RHIC tunnel are adequate to protect the vacuum chambers when the magnet cooling lines fail; and (4) In addition to the pressure loading, the thermal deformations, due to the temperature decrease on the cryostat chambers, could also cause a high stress on the chamber, if not properly supported.
Book Synopsis Low Temperature Flow of He4 Through Narrow Channels by : E. F. Hammel
Download or read book Low Temperature Flow of He4 Through Narrow Channels written by E. F. Hammel and published by . This book was released on 1958 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low Temperature Techniques by : Alistair Christopher Rose-Innes
Download or read book Low Temperature Techniques written by Alistair Christopher Rose-Innes and published by . This book was released on 1964 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Thermodynamic Pressure in Superfluid Helium and Its Implications for the Phonon Dispersion Curve by : Albert Robert Menard
Download or read book The Thermodynamic Pressure in Superfluid Helium and Its Implications for the Phonon Dispersion Curve written by Albert Robert Menard and published by Palala Press. This book was released on 2018-03-03 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis International Thermodynamic Tables of the Fluid State by : S. Angus
Download or read book International Thermodynamic Tables of the Fluid State written by S. Angus and published by Elsevier. This book was released on 2013-10-22 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Thermodynamic Tables of the Fluid State - 7 Propylene (Propene) is a compilation of internationally agreed values of the equilibrium thermodynamic properties of propylene. This book is composed of three chapters, and begins with the presentation of experimental result of thermodynamic studies compared with the equations used to generate the tables. The succeeding chapter deals with correlating equations for thermodynamic property determination of propylene. The last chapter provides the tabulations of the propylene's thermodynamic properties and constants. This book will prove useful to physical chemists.
Download or read book Astromag written by and published by . This book was released on 1988 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Magnetic Thermonuclear Reactor Design by : Vasilij A. Glukhikh
Download or read book Fundamentals of Magnetic Thermonuclear Reactor Design written by Vasilij A. Glukhikh and published by Woodhead Publishing. This book was released on 2018-05-21 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Magnetic Thermonuclear Reactor Design is a comprehensive resource on fusion technology and energy systems written by renowned scientists and engineers from the Russian nuclear industry. It brings together a wealth of invaluable experience and knowledge on controlled thermonuclear fusion (CTF) facilities with magnetic plasma confinement – from the first semi-commercial tokamak T-3, to the multi-billion international experimental thermonuclear reactor ITER, now in construction in France. As the INTOR and ITER projects have made an immense contribution in the past few decades, this book focuses on its practical engineering aspects and the basics of technical physics and electrical engineering. Users will gain an understanding of the key ratios between plasma and technical parameters, design streamlining algorithms and engineering solutions. Written by a team of qualified experts who have been involved in the design of thermonuclear reactors for over 50 years Outlines the most important features of the ITER project in France which is building the largest tokamak, including the design, material selection, safety and economic considerations Includes data on how to design magnetic fusion reactors using CAD tools, along with relevant regulatory documents
Download or read book Superconductivity written by R.G. Sharma and published by Springer. This book was released on 2015-02-26 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the basics and applications of superconducting magnets. It explains the phenomenon of superconductivity, theories of superconductivity, type II superconductors and high-temperature cuprate superconductors. The main focus of the book is on the application to superconducting magnets to accelerators and fusion reactors and other applications of superconducting magnets. The thermal and electromagnetic stability criteria of the conductors and the present status of the fabrication techniques for future magnet applications are addressed. The book is based on the long experience of the author in studying superconducting materials, building magnets and numerous lectures delivered to scholars. A researcher and graduate student will enjoy reading the book to learn various aspects of magnet applications of superconductivity. The book provides the knowledge in the field of applied superconductivity in a comprehensive way.
Author :Frederick J. Edeskuty Publisher :Springer Science & Business Media ISBN 13 :1489903070 Total Pages :239 pages Book Rating :4.4/5 (899 download)
Book Synopsis Safety in the Handling of Cryogenic Fluids by : Frederick J. Edeskuty
Download or read book Safety in the Handling of Cryogenic Fluids written by Frederick J. Edeskuty and published by Springer Science & Business Media. This book was released on 2013-11-22 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of safety in any scientific endeavor is never in question. However, when cryogenic temperatures are involved, safety is especially important. In addition to observing the normal precautions, one must also take into account the variations of physical properties that occur at low temperatures. At these tempera tures, some properties not only exhibit large differences from their normal values but also can vary widely over a small temperature range. Before any cryogenic project is started, a thorough knowledge of the possible hazards is necessary. Only in this way can the safest operation be attained. Over the hundred-year history of cryogenic research, this has been shown to be the case. Keeping this requirement in mind is an essential ingredient in the quest for accident-free work. The past four or five decades have seen a great expansion of cryogenic technology. Cryogenic liquids, such as oxygen, nitrogen, hydrogen, and helium, have become commonly used in a number of different applications and are easily available in any part of the United States and, indeed, almost anywhere in the world. Not only are these liquids available, they have become less expensive and also available in ever larger quantities. As quantities increase, so also do the conse quences of mishaps. The future seems to hold promise of ever larger and more widespread use of the common cryogens. Thus, the importance of safety also increases as time progresses.
Book Synopsis The Art of Experimental Physics by : Daryl W. Preston
Download or read book The Art of Experimental Physics written by Daryl W. Preston and published by John Wiley & Sons, Incorporated. This book was released on 1991-01-16 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fills the need for an experimental physics text. There are three main sections of the text. The first is an introduction that offers valuable insights into the importance of the human element in physics and traces the course of its historical development. This section also explains the objectives of the physics laboratory and the skills you must master to maintain a ``Notebook'' and analyze data, and presents a general discussion of spectroscopy experiments. The second section discusses the unique and valuable role of the computer in the laboratory and explains how to use it; software is included with the text. The final section contains over twenty experiments, providing students with a broad introduction into the use of a variety of instruments for carrying out many different measurements.
Book Synopsis Safety for Particle Accelerators by : Thomas Otto
Download or read book Safety for Particle Accelerators written by Thomas Otto and published by Springer Nature. This book was released on 2020-12-29 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of non-standard technologies such as superconductivity, cryogenics and radiofrequency pose challenges for the safe operation of accelerator facilities that cannot be addressed using only best practice from occupational safety in conventional industry. This book introduces readers to different occupational safety issues at accelerator facilities and is directed to managers, scientists, technical personnel and students working at current or future accelerator facilities. While the focus is on occupational safety – how to protect the people working at these facilities – the book also touches on “machine safety” – how to prevent accelerators from doing structural damage to themselves. This open access book offers a first introduction to safety at accelerator facilities. Presenting an overview of the safety-related aspects of the specific technologies employed in particle accelerators, it highlights the potential hazards at such facilities and current prevention and protection measures. It closes with a review of safety management and organization at accelerator facilities.
Book Synopsis Composite Superconductors by : K. Osamura
Download or read book Composite Superconductors written by K. Osamura and published by CRC Press. This book was released on 1993-11-16 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference examines the tremendous benefits produced by the use of superconductivity, including the realization of a commercial fusion reactor for the generation of electricity. Providing a comprehensive coverage of superconductivity and magnet design - incorporating background information for beginners as well as research advances for specialists - this work: discusses the historical development of superconductivity and its engineering applications; explains the mechanical properties of the metal matrix composite; describes the important electromagnetic factors for the design of composite superconductors; analyzes the fabrication and optimization of various composite superconductors; and assesses the future development of high Tc oxide superconductors for engineering applicaitons.;This title is intended for: physicists; metallurgists; materials scientists; materials, electrical, mechanical, cryogenic and medical engineers; and graduate students in these disciplines.
Book Synopsis Ramjet Engines by : Mikhail Makarovich Bondari͡u︡k
Download or read book Ramjet Engines written by Mikhail Makarovich Bondari͡u︡k and published by . This book was released on 1969 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applied Superconductivity by : Paul Seidel
Download or read book Applied Superconductivity written by Paul Seidel and published by John Wiley & Sons. This book was released on 2015-03-23 with total page 1334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This wide-ranging presentation of applied superconductivity, from fundamentals and materials right up to the details of many applications, is an essential reference for physicists and engineers in academic research as well as in industry. Readers looking for a comprehensive overview on basic effects related to superconductivity and superconducting materials will expand their knowledge and understanding of both low and high Tc superconductors with respect to their application. Technology, preparation and characterization are covered for bulk, single crystals, thins fi lms as well as electronic devices, wires and tapes. The main benefit of this work lies in its broad coverage of significant applications in magnets, power engineering, electronics, sensors and quantum metrology. The reader will find information on superconducting magnets for diverse applications like particle physics, fusion research, medicine, and biomagnetism as well as materials processing. SQUIDs and their usage in medicine or geophysics are thoroughly covered, as are superconducting radiation and particle detectors, aspects on superconductor digital electronics, leading readers to quantum computing and new devices.
Book Synopsis Superconductivity and Its Applications by : Yi-Han Kao
Download or read book Superconductivity and Its Applications written by Yi-Han Kao and published by American Institute of Physics. This book was released on 1992 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
