Title of article :
Numerical investigation of coupled heat and mass transfer during desorption of hydrogen in metal hydride beds
Author/Authors :
Muthukumar، نويسنده , , P. and Satheesh، نويسنده , , A. and Madhavakrishna، نويسنده , , U. and Dewan، نويسنده , , Anupam، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
7
From page :
69
To page :
75
Abstract :
This paper presents a numerical investigation of two-dimensional coupled heat and mass transfer processes in MmNi4.6Fe0.4 and MmNi4.6Al0.4 based metal hydride beds of cylindrical configuration during desorption of hydrogen using a commercial software FLUENT 6.1.22. Temperature and concentration profiles at different radial locations, variation of average bed temperature and amount of hydrogen desorbed are presented at different hot fluid temperatures and bed thicknesses ranging from 30 to 50 °C and 5 to 15 mm, respectively. The numerical results show that the dehydriding process for both the alloys depends on the temperature distribution in the metal hydride bed. At a given hot fluid temperature of 50 °C, MmNi4.6Fe0.4 and MmNi4.6Al0.4 desorb the maximum hydrogen of about 1.11 and 1.28 wt%, respectively at the supply conditions of 30 bar and 25 °C. The present computational results are also compared with the experimental data reported in the literature and a good agreement was found between the two.
Keywords :
FLUENT 6.1.22 , Coupled heat and mass transfer , Desorption , Hydrogen storage
Journal title :
Energy Conversion and Management
Serial Year :
2009
Journal title :
Energy Conversion and Management
Record number :
2334417
Link To Document :
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