Study on the development of a capacitance-type flowmeter for slush hydrogen |
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| Affiliation: | 1. Department of Hydrogen Energy Systems, NEDO, Sunshine 60, 3-1-1 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-6028, Japan;2. Nagasaki R&D Center, Mitsubishi Heavy Industries Ltd., 5-717-1 Fukahori-machi, Nagasaki 851-0392, Japan;1. Departamento de Física, Instituto de Ciências Exatas e Naturais e Educação (ICENE), Universidade Federal do Triângulo Mineiro - UFTM, 38064-200 Uberaba, MG, Brazil;2. Instituto de Física, Universidade Federal de Goiás, Campus Samambaia, 74690-900 Goiânia, GO, Brazil;3. Instituto de Física de São Carlos, Universidade de São Paulo, 13560-970 São Carlos, SP, Brazil;1. Institut für Geophysik und Meteorologie, Universität zu Köln, Albertus-Magnus-Platz, 50923 Köln, Germany;2. Space Exploration Sector, Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723, USA;1. School of Nuclear Science, University of Science and Technology of China, Hefei 230026, China;2. Nuclear Power Institute of China, Chengdu 610041, China;1. School of Control and Computer Engineering, North China Electric Power University, Changping District, Beijing, 102206, China;2. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Changping District, Beijing, 102206, China;1. Department of Chemical and Biomolecular Engineering, The Ohio State University, 140 West 19th Ave, Columbus, OH 43210, United States;2. Tech4Imaging LLC, 4171 Fairfax Dr, Columbus, OH 43220, United States;3. NASA Glenn Research Center, 21000 Brookpark Rd, Cleveland, OH 44135, United States |
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| Abstract: | Slush hydrogen is a two-phase solid–liquid cryogenic fluid consisting of solid hydrogen particles in liquid hydrogen, various applications for which are anticipated, including fuel for reusable space shuttles. Noting the slight fluctuation in the distribution of solid hydrogen particles in slush hydrogen, i.e., slush hydrogen density, the authors of the current study placed capacitance-type densimeters at two locations along the piped flow to measure the density and to detect density fluctuations. The flow velocity was also calculated from the densimeter distance and delay time when the cross correlation function of the two density signals was at a maximum. This capacitance-type flowmeter has no moving mechanical parts and no probe in the flow stream. This paper reports the development of a prototype slush hydrogen capacitance-type flowmeter, together with the fabrication of required test equipment, and confirmation of flowmeter accuracy. |
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