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• W4385274676 abstract "The goal of the current study is to develop a dynamic model for forecasting the absorption and desorption behavior of metal hydride hydrogen system. The accuracy of the developed dynamic model is verified with the actual model. The effect of reactor diameter (10–25 mm), hydrogen supply pressure (5–20 bar) and desorption temperature (40–70 °C) on the accuracy of the temperature profile predicted by the dynamic model as compared to the actual model is investigated. The results showed that the percentage deviation of the dynamic model with actual model increase with the reactor diameter. The dynamic model predicted the average bed temperature during absorption with a maximum deviation of 4.32% (14 K) for a reactor of 25 mm diameter compared to the actual model. A maximum deviation of only 2.11% (6.32 K) was observed for the same reactor during desorption at 323 K. Further, the percentage deviation increases with the supply pressure and desorption temperature. Overall, it is observed that the slower the absorption/desorption, the better is the prediction accuracy of the dynamic model. On the other hand, the dynamic model is over 300 times faster than the actual, which saves computational time and cost. Furthermore, the dynamic model is extended for studying the coupled reactor system of a dual-stage metal hydride hydrogen compressor. Four alloy pairs are compared in terms of compression ratio, the amount of energy lost due to hysteresis, average hydrogen discharge rate, and isentropic efficiency. The comparison results suggested that an appropriate combination of AB5-AB2 type alloy is suitable for higher delivery plateau pressure, lower energy loss due to hysteresis, and a reasonable compression ratio." @default.
• W4385274676 created "2023-07-27" @default.
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• W4385274676 date "2023-07-01" @default.
• W4385274676 modified "2023-09-25" @default.
• W4385274676 title "A dynamic model for predicting the absorption and desorption behaviors of metal hydride systems and its implementation for screening of alloys for metal hydride hydrogen compressor" @default.
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• W4385274676 doi "https://doi.org/10.1016/j.ijhydene.2023.06.275" @default.
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