Download or read book A Technique for Cryopumping Hydrogen written by Jack Grobman and published by . This book was released on 1961 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental tests performed in vacuo indicated that a chemical adsorption reaction can be used to facilitate the cryopumping of H with liquidN-cooled condensers. Cryopumping is accomplished by reacting H with O to form H2O, which will readily condense on a liquid-N-cooled surface. The reaction in vacuo was performed on a solid catalyst, which consisted of a bed of Pd-coated alumina pellets. Cryopumping was observed at pressures as low as about 0.4 micron of mercury. A laboratory cryopump consisting of 5.8 lb of catalyst and a liquid-N-cooled condenser achieved a pumping speed of about 570 l/sec at 1.0 micron of Hg. A laboratory model of a cryopump which could be used in an electric rocket test facility was studied. The experimental data obtained were used to estimate the size of the catalyst bed necessary to test a 50-kw electric thermal rocket with an H propellant flow rate of 0.00063 kg/sec (a pumping speed of 580,000 l/sec at an operating pressure of 10 microns of Hg. (Author).

Download or read book Cryopumping written by René A. Haefer and published by Oxford University Press, USA. This book was released on 1989 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the physical theory, practical techniques, and applications of cryopumping--the production of a vacuum through the use of low temperatures. The importance of this technique has increased greatly in recent years due to the proliferation of new uses and the demand in many vacuum procedures for ultraclean gas atmospheres, low final pressures, and high specific pumping speeds. The author reviews recent developments that have resulted in safer pumps that allow full automation and that are superior to conventional pumps in installation and operation costs.

Download or read book Cryopumping by Three Arrays at Pressures of 10 3 to 10 8 Mm Hg written by Carlisle B. Barnes (Jr.) and published by . This book was released on 1961 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three arrangements of surfaces cooled to 21.5 K were investigated theoretically and tested to determine condensing rates and resultant vacuum pumping performance of the arrays at pressures of 1/1000 to 10 to the -8 mm Hg. These are identified as unshielded, flat shielded, and angled fin arrays. Theoretical performance and experimental performances were correlated. Measurement of vacua below 1/10,000 mm Hg. were shown to be of uncertain accuracy.

Download or read book Official Gazette of the United States Patent and Trademark Office written by and published by . This book was released on 1993 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Note written by and published by . This book was released on 1968 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Investigations of Solid Nitrogen Formed by Cryopumping written by K. W. Rogers and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Self evacuated Multilayer Insulation of Lightweight Prefabricated Panels for Cryogenic Storage Tanks written by and published by . This book was released on 1968 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Cryogenic Engineering written by K.D. Timmerhaus and published by Springer Science & Business Media. This book was released on 2013-12-14 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1961 Cryogenic Engineering Conference Committee is pleased to present the papers of the 1961 Cryogenic Engineering Conference. We are grateful to have had the University of Michigan at Ann Arbor, Michigan as our host for the seventh annual meeting of this group. The Conference Committee in presenting the papers oftbis Conference takes this opportunity to acknowledge the assistance of an Editorial Committee in the selection of papers for the program. Since over one hundred and twenty papers were submitted, their task of screening and evaluating the papers was a dif ficult one. The Committee guided by G. j. V an Wylen, who also served as chair man of the Conference Committee, included R. W. Arnett, B. W. Birmingham, D. B. Chelton, R. j. Corruccini, C. j. Guntner, M. j. Hiza, R. B. jacobs, A. J. Kidnay, R. H. Kropschot, j. Macinko, D. B. Mann, R. P. Mikesell, R. L. Powell, J. R. Purcell, R. P. Reed, R. j. Richards, A. F. Schmidt, R. B. Stewart, and K. A. Warren.

Download or read book A User s Guide to Vacuum Technology written by John F. O'Hanlon and published by John Wiley & Sons. This book was released on 2003-07-04 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the decade and a half since the publication of the Second Edition of A User?s Guide to Vacuum Technology there have been many important advances in the field, including spinning rotor gauges, dry mechanical pumps, magnetically levitated turbo pumps, and ultraclean system designs. These, along with improved cleaning and assembly techniques have made contamination-free manufacturing a reality. Designed to bridge the gap in both knowledge and training between designers and end users of vacuum equipment, the Third Edition offers a practical perspective on today?s vacuum technology. With a focus on the operation, understanding, and selection of equipment for industrial processes used in semiconductor, optics, packaging, and related coating technologies, A User?s Guide to Vacuum Technology, Third Edition provides a detailed treatment of this important field. While emphasizing the fundamentals and touching on significant topics not adequately covered elsewhere, the text avoids topics not relevant to the typical user.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1984 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Reports written by and published by . This book was released on 1961 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Columbia Accident Investigation Board Report written by United States. Columbia Accident Investigation Board and published by . This book was released on 2003 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1965 Transactions of the Third International Vacuum Congress written by H. Adam and published by Elsevier. This book was released on 2016-04-16 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1965 Transactions of the Third International Vacuum Congress, Volume 1: Invited Papers is the first of two-volumes that review the state of knowledge in vacuum technology. The present volume comprises the opening address by Prof Auwárter and the twelve comprehensive main lectures. In keeping with the purpose of an international congress, the organizers took great pains to ensure that the choice of topics for the main lectures not only covered the scientific fundamentals as a whole, but also gave appropriate consideration to the technical applications. An analysis of the submitted topics shows that the strong points of research and development lie in the fields of ""Coating and Thin Layers"", ""Adsorption and Desorption,"" and ""Pressure Measurement and Leak Detection"". In the fields of application, ""Vacuum Metallurgy"" ranks highly. The papers published in the transactions originate from many European and overseas countries, proof that vacuum science is not only keenly pursued in all major industrial countries, but also that the new organizational form of the IUVSTA is capable of winning the services of all these countries for fruitful international cooperation in the vacuum field.

Download or read book Cryogenic Technology and Applications written by A.R. Jha and published by Elsevier. This book was released on 2011-04-01 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cryogenic Technology and Applications describes the need for smaller cryo-coolers as a result of the advances in the miniaturization of electrical and optical devices and the need for cooling and conducting efficiency. Cryogenic technology deals with materials at low temperatures and the physics of their behavior at these temps. The book demonstrates the ongoing new applications being discovered for cryo-cooled electrical and optical sensors and devices, with particular emphasis on high-end commercial applications in medical and scientific fields as well as in the aerospace and military industries. This book summarizes the important aspects of cryogenic technology critical to the design and development of refrigerators, cryo-coolers, and micro-coolers needed by various commercial, industrial, space and military systems. Cryogenic cooling plays an important role in unmanned aerial vehicle systems, infrared search and track sensors, missile warning receivers, satellite tracking systems, and a host of other commercial and military systems. * Provides an overview of the history of the development of cryogenic technology * Includes the latest information on micro-coolers for military and space applications * Offers detailed information on high-capacity cryogenic refrigerator systems used in applications such as food storage, high-power microwave and laser sensors, medical diagnostics, and infrared detectors

Download or read book Hyphenated Techniques in Supercritical Fluid Chromatography and Extraction written by K. Jinno and published by Elsevier. This book was released on 1992-07-21 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to focus on the latest developments in hyphenated techniques using supercritical fluids. The advantages of SFC in hyphenation with various detection modes, such as FTIR, MS, MPD and ICP and others are clearly featured throughout the book. Special attention is paid to coupling of SFE with GC or SFC. In this edited volume, chapters are written by leading experts in the field. The book will be of interest to professionals in academia, as well as to those researchers working in an industrial environment, such as analytical instrumentation, pharmaceuticals, agriculture, food, petrochemicals and environmental.

Download or read book Advances in Cryogenic Engineering written by Peter Kittel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1973 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hyatt Regency Hotel, Columbus, Ohio was the venue for the 1995 Cryogenic Engineering Conference. The meeting was held jointly with the International Cryogenic Materials Conference. Jim Peeples, of CVI, Inc., was conference chairman. Columbus is the home of the Battelle Memorial Institute, a pioneer in cryogenic materials development; the home of CVI, Inc., and Lake Shore Cryotronics, Inc., two leading manufacturers of cryogenic equipment; and it is the home of Ohio State University, where research on liquid helium has long been conducted. The program consisted of 315 CEC papers, nearly the same number as for CEC-91. This was the second largest number of papers ever submitted to the CEC. Of these, 252 papers are published here, in Volume 41 of Advances in Cryogenic Engineering. Once again the volume is published in two books. This volume includes a number of photographs taken during the awards lunch on July 20, 1995. Photographs have often been taken during the conferences, but they have never been used. The pictures are of the awardees, the conference chairs, and the organizers. They are distributed through out the books on pages that would otherwise have been blank. The pictures can be found on the following pages: 28, 232, 334, 536, 640, 826, 990, 1032, 1202, 1462,1682,1888, and 1994.

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1966 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: