Experimental Study of Thermal Management and Enhancement of Adsorption-Based Onboard Hydrogen Storage System
- Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322
- Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401
Abstract Although hydrogen has one of the highest specific energies, its energy density in terms of volume is very poor compared to liquid fuels. Thus, to achieve attractive energy density for hydrogen, either high-pressure compression or a storage method is needed. For onboard (vehicles) hydrogen storage, up to 700 bars are needed for commercial fuel cell vehicles. This creates extreme requirements for material strength and thus safety concerns. A new metal-organic framework 5 (MOF-5) was selected as the adsorbent for H2 storage, as it provides promising storage capacity and is commercially available. Under the same H2 storage capacity and tank volume, the adsorption system is expected several folds reduction in pressure. Under the current study, a unique thermal management design using Modular Adsorbing Tank Insert (MATI) is paired with conduction-enhanced compressed MOF-5 beds. Compared to bare beds without conduction enhancement, all beds with conduction enhancement using either aluminum pins or expanded natural graphite (ENG) have shown various levels of improvement on bed thermal response, which can potentially help expedite system charge and discharge cycle times for real applications.
- Research Organization:
- US Department of Energy (USDOE), Washington, DC (United States). Office of Energy Efficiency and Renewable Energy (EERE), Hydrogen Storage Engineering Center of Excellence (HSECoE)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1982925
- Journal Information:
- Journal of Electrochemical Energy Conversion and Storage, Vol. 19, Issue 1; ISSN 2381-6872
- Publisher:
- ASME
- Country of Publication:
- United States
- Language:
- English
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