Performance of high power metal hydride reactors |
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| Affiliation: | 1. Thermal Electric Devices, Albuquerque, NM, USA;2. Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131, USA;3. Westinghouse Savannah River Company, Savannah River Technology Center, Aiken, SC 29808, USA;1. Department of Imaging and Applied Physics, Fuels and Energy Technology Institute, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;2. Interdisciplinary Nanoscience Center (iNANO) & Institut for Kemi, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark;1. Department of Mechanical Engineering, Inha University, 100 Inha-ro Nam-Gu, Incheon 402-751, Republic of Korea;2. National Fusion Research Institute, Gwahagno 113, Yuseong-gu, Daejeon 305-333, Republic of Korea;3. Department of Applied Chemistry, Konkuk University, 322 Danwol-Dong, Chungju, Chungbuk 380-701, Republic of Korea;4. Material Engineering and Science, Hongik University, Jochiwon-eup, Yeongi-gun, Chungnam 339-701, Republic of Korea;5. Department of Materials Science and Engineering, Korea National University of Transportation, Chungju 380-702, Republic of Korea;1. School of Chemical Engineering, Sichuan University, Chengdu 610065, China;2. Department of Chemical Safety, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, D-12205 Berlin, Germany;1. Helmholtz-Zentrum Hereon, Institute of Hydrogen Technology, Max-Planck-Straße 1, 21502 Geesthacht, Germany;2. Helmut Schmidt Universität – University of the Federal Armed Forces Hamburg, Institute of Materials Science, Holstenhofweg 85, 22043 Hamburg, Germany;1. Nigde Omer Halisdemir University, Prof. Dr. T. Nejat Veziroglu Clean Energy Research Center, 51240, Nigde, Türkiye;2. Nigde Omer Halisdemir University, Mechanical Engineering Department, 51240, Nigde, Türkiye;3. Nigde Omer Halisdemir University, Nigde Vocational School of Technical Sciences, 51200, Nigde, Türkiye;1. HySA Systems Competence Centre, South African Institute for Advanced Materials Chemistry (SAIAMC), University of the Western Cape, South Africa;2. Impala Platinum Ltd, Springs, South Africa;3. TF DESIGN (Pty) Ltd., Stellenbosch, South Africa |
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| Abstract: | Metal hydride reactors were built with porous powder metal hydride (PMH) compacts. An improved reactor built with copper coated PMH compacts of LaNi5 with a 1.27 cm diameter produced a nominal specific cooling power of 1.5 kW/kg hydride. A similar reactor, built with copper coated PMH compacts of Ca0.4Mm0.6Ni5, showed 2.2 kW/kg hydride. Results with copper coated PMH compacts showed improved thermal conductivity. The compacts are structurally strong and prevent migration of fine metal hydride particles. Life-cycle tests were performed on the reactor with LaNi5 for over 3000 cycles and the cooling power of the reactor gradually decreased by approximately 55%. |
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