Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Evaluation Of Specialized Thermocouples For High Temperature In Pile Testing
Download Evaluation Of Specialized Thermocouples For High Temperature In Pile Testing full books in PDF, epub, and Kindle. Read online Evaluation Of Specialized Thermocouples For High Temperature In Pile Testing ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Evaluation of Specialized Thermocouples for High-Temperature In-Pile Testing by :
Download or read book Evaluation of Specialized Thermocouples for High-Temperature In-Pile Testing written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Many advanced nuclear reactor designs require new fuel, cladding, and structural materials. Data are needed to characterize the performance of these new materials in high temperature, oxidizing, and radiation conditions. To obtain this data, robust instrumentation is needed that can survive proposed test conditions. Standard thermocuoples for measuring temperature in-pile degrade at temperatures above 1100 oC. Hence, INL initiated a project to develop specialized thermocouples for high temperature in-pile applications. Results from efforts to develop, fabricate, and evaluate specialized high-temperature thermocouples for in-pile applications suggest that several material combinations are viable. Tests show that several low neutron cross-section candidate materials are resistant to material interactions and remain ductile at high temperatures. In addition, results indicate that the thermoelectric response is singlevalued and repeatable with acceptable resolution for the candidate thermoelements considered. The final selection of the thermocouple materials will depend on the desired peak temperature and accuracy requirements. If thermocouples are needed that measure temperatures at 1600 oC or higher, the doped Mo / Nb-1%Zr and Mo-1.6% Nb / Nb-1%Zr thermoelement wire combinations are recommended with HfO2 insulation, and a Nb-1%Zr sheath. Additional evaluations are underway to characterize the performance of this proposed thermocouple design. INL has worked to optimize this thermocouple's stability. With appropriate heat treatment and fabrication approaches, results indicate that the effects of thermal cycling on the calibration of the proposed thermocouple design can be minimized. INL has initiated a series of high temperature (from 1200 to 1800 oC) long duration (up to six months) tests. Initial results indicate the INL-developed thermocouple's termoelectric response is stable with less than 15 oC drift observed in over 3500 hours of the planned 4000 hours of tests at 1200 oC. In comparison, commercially-available Type K and N thermocouples included in these 1200 oC tests have experienced drifts up to of over100 oC.
Book Synopsis Enhancements to High Temperature In-Pile Thermocouple Performance by :
Download or read book Enhancements to High Temperature In-Pile Thermocouple Performance written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A joint University of Idaho (UI) and Idaho National Laboratory (INL) University Nuclear Research Initiative (UNERI) was to initiated to extend initial INL efforts to develop doped molybdenum/niobium alloy High Temperature Irradiation Resistant Thermocouples (HTIR-TCs). The overall objective of this UNERI was to develop recommendations for an optimized thermocouple design for high temperature, long duration, in-pile testing by expanding upon results from initial INL efforts. Tasks to quantify the impact of candidate enhancements, such as alternate alloys, alternate geometries, and alternate thermocouple fabrication techniques, on thermocouple performance were completed at INL's High Temperature Test Laboratory (HTTL), a state of the art facility equipped with specialized equipment and trained staff in the area of high temperature instrumentation development and evaluation. Key results of these evaluations, which are documented in this report, are as follows. The doped molybdenum and Nb-1%Zr, which were proposed in the initial INL HTIR-TC design, were found to retain ductility better than the developmental molybdenum-low niobium alloys and the niobium-low molybdenum alloys evaluated. Hence, the performance and lower cost of the commercially available KW-Mo makes a thermocouple containing KW-Mo and Nb-1%Zr the best option at this time. HTIR-TCs containing larger diameter wires offer the potential to increase HTIR-TC stability and reliability at higher temperatures. HTIR-TC heat treatment temperatures and times should be limited to not more than 100 C above the proposed operating temperatures and to durations of at least 4 to 5 hours. Preliminary investigations suggest that the performance of swaged and loose assembly HTIR-TC designs is similar. However, the swaged designs are less expensive and easier to construct. In addition to optimizing HTIR-TC performance, This UNERI project provided unique opportunities to several University of Idaho students, allowing them to become familiar with the techniques and equipment used for specialized high temperature instrumentation fabrication and evaluation and to author/coauthor several key conference papers and journal articles.
Book Synopsis Thermocouples For High Temperature In-Pile Testing by : J. L. Rempe
Download or read book Thermocouples For High Temperature In-Pile Testing written by J. L. Rempe and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Many advanced nuclear reactor designs require new fuel, cladding and structural materials. Data are needed to characeterize the performance of these new materials in high temperature, oxidizing and radiation conditions. To obtain this data, robust instrumentation is needed htat can survive proposed test conditions. Traditional methods for measuring temperature in-pile degrade at temperatures above 1080 degrees C. Hence, a project was intiated to develop specialized thermocouples for high temperature in-pile applications (see Rempe and Wilkins, 2005). This paper summarizes efforts to develop, fabricate and evaluate these specialized thermocouples.
Book Synopsis High Temperature Thermocouples For In-pile Applications by :
Download or read book High Temperature Thermocouples For In-pile Applications written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional methods for measuring temperature in-pile degrade at temperatures above 1080 degrees C. Hence, a project has been initiated to explore the use of specialized thermocouples that are composed of materials that are able to withstand higher temperature, in-pile test conditions. Results from efforts to develop, fabricate and evaluate the performance of these specialized thermocouples are reported in this paper. Candidate materials were evaluated for their ability to withstand irradiation, to resit material interactions and to remain ductile at high temperatures. In addition, candidate thermocouples were evaluated based on their resolution over the temperature ranges of interest. Results from these evaluations are reported, and additional on-going development activities are summarized.
Book Synopsis Benchmark Experiments, Development and Needs in Support of Advanced Reactor Design by : Mark David DeHart
Download or read book Benchmark Experiments, Development and Needs in Support of Advanced Reactor Design written by Mark David DeHart and published by Frontiers Media SA. This book was released on 2023-08-01 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications, Reports, and Papers for 1966 from Oak Ridge National Laboratory by : F. M. O'Hara
Download or read book Publications, Reports, and Papers for 1966 from Oak Ridge National Laboratory written by F. M. O'Hara and published by . This book was released on 1967 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Far Eastern Review written by and published by . This book was released on 1923 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Far Eastern Review, Engineering, Finance, Commerce by :
Download or read book The Far Eastern Review, Engineering, Finance, Commerce written by and published by . This book was released on 1923 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Materials Research and Standards by :
Download or read book Materials Research and Standards written by and published by . This book was released on 1967 with total page 1034 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In-pile Loop Tests of GCRE Elements (I-IT and I-I'T) by : S. Nakazato
Download or read book In-pile Loop Tests of GCRE Elements (I-IT and I-I'T) written by S. Nakazato and published by . This book was released on 1959 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-11 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Special Report - Corps of Engineers, U.S. Army, Cold Regions Research and Engineering Laboratory by : Cold Regions Research and Engineering Laboratory (U.S.)
Download or read book Special Report - Corps of Engineers, U.S. Army, Cold Regions Research and Engineering Laboratory written by Cold Regions Research and Engineering Laboratory (U.S.) and published by . This book was released on 1972 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Technical Progress Report by :
Download or read book Annual Technical Progress Report written by and published by . This book was released on 1961 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis and Experimental Evaluation of an Ultra-high Temperature Pyrolytic Graphite Thermocouple by : C. A. Klein
Download or read book Analysis and Experimental Evaluation of an Ultra-high Temperature Pyrolytic Graphite Thermocouple written by C. A. Klein and published by . This book was released on 1966 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is made up of three segments as follows: (1) A theoretical analysis of thermoelectricity along graphite layer planes. It is shown how the TEP can be derived from first principles using the Slonczewski-Weiss description of the graphite band structure. From the density of state equation we derive rigorous indications on the energy dependence of the scattering parameter, which allow us to undertake valid comparisons with experimental results. (2) Chapter II summarizes the experimental procedure. Great care was taken in order to arrive at reliable Seebeck coefficients. Thermocouple work was plagued by experimental difficulties (furnace conductance) of a similar nature as experienced by other investigators. (3) Finally, measured TEP was assessed in the light of the theory developed in Chapter I. New light is thus shed upon critical parameters such as the mobility ratio, which leads to a much improved description of transport in pyrolytic graphite and alloys of pyrolytic graphite. It is demonstrated that BPG/PG thermocouples are intrinsically capable of delivering exceptionally favorable output characteristics; a reduction to practice will require further efforts, in particular in connection with proper test-furnace design. (Author).
