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Article

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

Greenway Energy, 301 Gateway Drive, Aiken, SC 29803, USA
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Metals 2018, 8(6), 469; https://doi.org/10.3390/met8060469
Received: 1 June 2018 / Revised: 16 June 2018 / Accepted: 18 June 2018 / Published: 20 June 2018
(This article belongs to the Special Issue Metals in Hydrogen Technology)
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. View Full-Text
Keywords: high-pressure hydrogen; metal hydride-based high-pressure compression; techno-economic analysis; Ti-based AB2 metal hydrides; minichannel heat exchanger high-pressure hydrogen; metal hydride-based high-pressure compression; techno-economic analysis; Ti-based AB2 metal hydrides; minichannel heat exchanger
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MDPI and ACS Style

Corgnale, C.; Sulic, M. Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems. Metals 2018, 8, 469. https://doi.org/10.3390/met8060469

AMA Style

Corgnale C, Sulic M. Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems. Metals. 2018; 8(6):469. https://doi.org/10.3390/met8060469

Chicago/Turabian Style

Corgnale, Claudio, and Martin Sulic. 2018. "Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems" Metals 8, no. 6: 469. https://doi.org/10.3390/met8060469

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