THE CFD PREDICATION FOR ADSORPTIVE HYDROGEN STORAGE ON METAL-ORGANIC FRAMEWORK
Hydrogen cryo-adsorption in high surface metalorganic framework (MOF) and other microporous adsorbents have generated a significant amount of interest over the past decade, due to its high gravimetric storage density, fast kinetics and complete reversibility. This paper uses computational fluid dynamics (CFD) to simulate the charging of a sorption-based hydrogen storage system. The CFD model is based on the mass, momentum and energy conservation equations of a system formed of gaseous and adsorbed hydrogen, a metal-organic framework bed and steel tank walls. The cryo-adsorption process is modeled using a modified Dubinin-Astakov adsorption isotherms extended to the supercritical regime. The variational heat of adsorption which relate to the absolute adsorption is used, derived from the model isotherms. The model is implemented using Fluent. We study the changes of temperature, pressure and adsorption during the charging and dormancy processes in the case of liquid nitrogen cooling. The simulated pressure is in a good agreement with the experimental values. The simulated temperature profiles are also generally in good agreement with the experimental values. Furthermore, we have studied the effect of the mass flow rates, the heat of adsorption and the coefficient of heat transfer on temperature and adsorption capacity.
hydrogen storage metal-organic framework cryo-adsorption computational fluid dynamics
Rong Peng Jinsheng Xiao Pierre B(e)nard Richard Chahine
School of Materials Science and Engineering, Wuhan University of Technology, Hubei 430070, China Sta State Key Laboratory of Advanced Technology for Materials Synthesis and Progressing, Wuhan Universit Hydrogen Research Institute, Universite du Quebec a Trois-Rivieres, QC, G9A 5H7, Canada
国际会议
大连
英文
56
2012-05-28（万方平台首次上网日期，不代表论文的发表时间）