Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems
- Greenway Energy, Aiken, SC (United States)
Traditional high-pressure mechanical compressors account for over half of the car station’s cost, have insufficient reliability, and are not feasible for a large-scale fuel cell market. An alternative technology, employing a two-stage, hybrid system based on electrochemical and metal hydride compression technologies, represents an excellent alternative to conventional compressors. The high-pressure stage, operating at 100–875 bar, is based on a metal hydride thermal system. A techno-economic analysis of the metal hydride system is presented and discussed. A model of the metal hydride system was developed, integrating a lumped parameter mass and energy balance model with an economic model. A novel metal hydride heat exchanger configuration is also presented, based on minichannel heat transfer systems, allowing for effective high-pressure compression. Several metal hydrides were analyzed and screened, demonstrating that one selected material, namely (Ti0.97Zr0.03)1.1Cr1.6Mn0.4, is likely the best candidate material to be employed for high-pressure compressors under the specific conditions. System efficiency and costs were assessed based on the properties of currently available materials at industrial levels. Results show that the system can reach pressures on the order of 875 bar with thermal power provided at approximately 150 °C. The system cost is comparable with the current mechanical compressors and can be reduced in several ways as discussed in the paper.
- Research Organization:
- Greenway Energy, Aiken, SC (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office
- Grant/Contract Number:
- EE0007648
- OSTI ID:
- 1510526
- Journal Information:
- Metals, Vol. 8, Issue 6; ISSN 2075-4701
- Publisher:
- MDPICopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
High pressure thermal hydrogen compression employing Ti 1.1 CrMn metal hydride material
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journal | December 2019 |
Thermodynamic Insights for Electrochemical Hydrogen Compression with Proton-Conducting Membranes
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journal | July 2019 |
Towards Non-Mechanical Hybrid Hydrogen Compression for Decentralized Hydrogen Facilities
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journal | June 2020 |
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