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Experiments on solid state hydrogen storage device with a finned tube heat exchanger
Anurag Singh,
Published in Elsevier Ltd
2017
Volume: 42
   
Issue: 22
Pages: 15226 - 15235
Abstract
The absorption and desorption performances of a solid state (metal hydride) hydrogen storage device with a finned tube heat exchanger are experimentally investigated. The heat exchanger design consists of two “U” shaped cooling tubes and perforated annular copper fins. Copper flakes are also inserted in between the fins to increase the overall effective thermal conductivity of the metal hydride bed. Experiments are performed on the storage device containing 1 kg of hydriding alloy LaNi5, at various hydrogen supply pressures. Water is used as the heat transfer fluid. The performance of the storage device is investigated for different operating parameters such as hydrogen supply pressure, cooling fluid temperature and heating fluid temperature. The shortest charging time found is 490 s for the absorption capacity of 1.2 wt% at a supply pressure of 15 bar and cooling fluid temperature and velocity of 288 K and 1 m/s respectively. The effect of copper flakes on absorption performance is also investigated and compared with a similar storage device without copper flakes. © 2017 Hydrogen Energy Publications LLC
About the journal
JournalData powered by TypesetInternational Journal of Hydrogen Energy
PublisherData powered by TypesetElsevier Ltd
ISSN03603199
Open AccessNo
Concepts (22)
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    Absorption cooling
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    Cooling
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    Copper
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    Fins (heat exchange)
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    Heat affected zone
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    Heat exchangers
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    Heat transfer
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    Hydrides
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    Hydrogen
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    Lanthanum alloys
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    Thermal conductivity
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    Tubes (components)
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    Virtual storage
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    ABSORPTION AND DESORPTIONS
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    ABSORPTION PERFORMANCE
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    Effective thermal conductivity
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    FINNED TUBE HEAT EXCHANGERS
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    HYDROGEN STORAGE DEVICE
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    LANI<SUB>5</SUB>
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    Metal hydrides
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    Solid-state hydrogen storage
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    Hydrogen storage