ISSN Online: 2688-7231
ISBN Online: 978-1-56700-524-0
Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India
Numerical Study on Performance Evaluation of Multi-Tubular Sodium Alanate Hydride Reactor by Enhancing Heat and Mass Transfer Characteristics Using Nanofluids
Thermal effects occurred throughout the hydrogen sorption have a significant effect on the performance of metal hydride reactor for hydrogen storage. In this work, a numerical model of a multi-tubular sodium alanate hydride reactor is formed based on different governing equations using ANSYS Fluent for the process of hydrogen absorption. The model is validated by comparing its results with available results and observed a decent harmony with a deviance of less than 5%. For exchange of heat during sorption, oil is mostly used in hydride reactor. Since nanofluid has a greater heat exchange features, in this work the commonly used heat exchange fluid is replaced by the nanofluid and results are obtained. The CuO/HTF, Al2O3/HTF and MgO/HTF nanofluids are chosen and simulation results are presented. It is observed that CuO/HTF nanofluid with 5 vol.% concentration performed better than other selected nanofluids. The CuO/ HTF nanofluid improves the rate of heat transfer for hydride reactor up to 10% and the time for absorption of hydrogen is improved up to 14%. Thus it is beneficial to utilize the nanofluid as heat extraction fluid for the hydride reactor.