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Title: Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems

Journal Article · · Metals
DOI:https://doi.org/10.3390/met8060469· OSTI ID:1510526
 [1];  [1]
  1. 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
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (3)

High pressure thermal hydrogen compression employing Ti 1.1 CrMn metal hydride material journal December 2019
Thermodynamic Insights for Electrochemical Hydrogen Compression with Proton-Conducting Membranes journal July 2019
Towards Non-Mechanical Hybrid Hydrogen Compression for Decentralized Hydrogen Facilities journal June 2020