General Motors: Final Report for Hydrogen Storage Engineering Center of Excellence

Cai, Mei¹  Chakraborty, Amlan¹  Hou, Peter¹  Kaisare, Niklet¹  Jorgensen, Scott¹  Kumar, Sudarshan¹  Li, Changpeng¹  Ortmann, Jerome¹  Raju, M.¹  Vadivelu, S. Kumar¹ 

[1] General Motors Company, Warren, MI (United States)

关键词: Hydrogen Storage;    sorbents;    storage systems;    MOF;    metal organic frameworks;    hydrogen storage engineering center of excellence;    adsorbents;    metal hydrides;   

DOI  :  10.2172/1321819
RP-ID  :  09GO19003 -- HSECE-F
PID  :  OSTI ID: 1321819

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

As part of the HSECoE team, the GM team built system models and detailed transport models for on-board hydrogen storage systems using metal hydrides and adsorbent materials. Detailed transport models have been developed for both the metal hydride and adsorbent systems with a focus on optimization of heat exchanger designs with the objective of minimizing the heat exchanger mass. We also performed work in collaboration with our partners on storage media structuring and enhancement studies for the metal hydride and adsorbent materials. Since the hydrogen storage materials are generally characterized by low density and low thermal conductivity, we conducted experiments to form pellets and add thermal conductivity enhancers to the storage material, and to improve cycling stability and durability of the metal hydride and adsorbent materials. Refueling of a MOF-5 pellet with cryogenic hydrogen was studied by developing a detailed two-dimensional axisymmetric COMSOL?? model of the process. The effects of pellet permeability, thermal conductivity, and thermal conductivity enhancers were investigated. Our key area of focus has been on designing and building a cryo-adsorption vessel for validation of cryo-adsorption models. The 3-L cryogenic tank was used to study the fast fill and discharge dynamics of a cryo-adsorbent storage system, both experimentally and numerically.