Realistic simulation in a single stage hydrogen compressor based on AB2 alloys

E, A.R. Galvis; Leardini, Fabrice; Bodega, J.; Ares, J.R.; Fernandez, Jose Francisco

doi:10.1016/j.ijhydene.2016.01.125

Cited by 23 publications

(9 citation statements)

References 26 publications

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“…4 back-scattered electron images of the alloys can be seen. As described in previous works with alloys of similar composition [43,51], the sample is mainly composed by a mixture of two distinctive areas (light and dark presented in table 1 and shown in Fig. 4) with different compositions.…”

Section: Fig3 X-ray Diffractograms With Rietveld Refinement Of M1 M2 and M3mentioning

confidence: 84%

“…Analogous deviations are found for M2 and M3 alloys. This variation results from the sloping nature of the plateau pressure which is not considered in the ideal Van´t Hoff plots [5,51]. Indeed, the increase in the real absorption pressure at each stage requires a correlated increase in the desorption temperature of the previous one.…”

Section: Realistic Thermodynamic Simulation Approachmentioning

confidence: 99%

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Simulation and design of a three-stage metal hydride hydrogen compressor based on experimental thermodynamic data

Leardini

Ares

et al. 2018

International Journal of Hydrogen Energy

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A semi-empirical method was developed to design a three stage Metal Hydride Hydrogen Compressor (MHHC) through the determination of thermodynamic properties of several hydrides. As a first step, three AB 2 -type alloys that satisfy operation conditions were selected from published thermodynamic data entailing over 200 single plateau hydrides. These alloys were synthetized by arc melting and characterized by X-Ray Powder Diffraction (XRPD), Scanning Electron Microscopy (SEM) and Energy Dispersion X-ray spectroscopy (EDX). Absorption and desorption Pressure-composition-Isotherms (P-c-I) were determined between 23 and 80 ºC to characterize their thermodynamic properties. Subsequently, an algorithm that uses these experimental data and a real equation of state for gaseous H 2 was implemented to simulate the volume, alloy mass, pressure and temperature of operation for each compressor stage, while optimizing the compression ratio and total number of compressed H 2 moles. Optimal desorption temperatures for the three stages were identified within the range of 110 to 132 °C. A system compression ratio (CR) of 92 was achieved. The number of H 2 moles compressed, the alloy mass and volume of each stage depend linearly on the volume of the external tank in which the hydrogen is delivered.

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Section: Fig3 X-ray Diffractograms With Rietveld Refinement Of M1 M2 and M3mentioning

confidence: 84%

Section: Realistic Thermodynamic Simulation Approachmentioning

confidence: 99%

Simulation and design of a three-stage metal hydride hydrogen compressor based on experimental thermodynamic data

Leardini

Ares

et al. 2018

International Journal of Hydrogen Energy

Self Cite

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“…Cheap, efficient and reliable hydrogen compression presents one of the big barriers which could hinder the large scale adoption of a 'Hydrogen Economy' . In order to overcome this hurdle, significant improvements in the efficiency, durability and reliability of hydrogen compressors, as well as cost reductions need to occur [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Research and development of hydrogen carrier based solutions for hydrogen compression and storage

et al. 2022

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Recently, the industrial and public interest in hydrogen technologies has strongly risen, since hydrogen is the ideal means for medium to long term energy storage, transport and usage in combination with renewable and green energy supply. Therefore, in a future energy system the production, storage and usage of green hydrogen is a key technology. Hydrogen is and will in future be even more used for industrial production processes as reduction agent or for the production of synthetic hydrocarbons, especially in the chemical industry and refineries. Under certain conditions material based systems for hydrogen storage and compression offer advantages over the classical systems based on gaseous or liquid hydrogen. This includes in particular lower maintenance costs, higher reliability and safety. Hydrogen storage is possible at pressures and temperatures much closer to ambient conditions. Hydrogen compression is possible without any moving parts and only by using waste heat. In this paper, the newest developments of hydrogen carriers for storage and compression are summarized. In addition, an overview of the different research activities in this field are given.

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“…In our previous works [13 -15], thermodynamic simulations and AB2 alloys experimentation in single and three-stage MHHC were carried out to optimize the compression ratio and the amount of compressed hydrogen. In [13], models for real gas behavior and Pressure-Composition isotherms (P-c-I) curves were selected to be used in future simulations. In [14] the mechanical behavior of the AB2 materials selected for a three stage MHHC during hydrogenation cycling was investigated defining the maximum filling value of a system based on these compounds.…”

Section: Introductionmentioning

confidence: 99%

Experimental behaviour of a three-stage metal hydride hydrogen compressor

et al. 2020

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A three-stage metal hydride hydrogen compressor (MHHC) system based in AB2-type alloys has been setup. Every stage can be considered as a Sieverts-type apparatus. The MHHC system can work in the pressure and temperature ranges comprised from vacuum to 250 bar and from RT to 200ºC, respectively. An efficient thermal management system was set up for the operational ranges of temperature designed. It dumps temperature shifts due to hydrogen expansion during stage coupling and hydrogen absorption/desorption in the alloys. Each reactor consists of a single and thin stainless-steel tube to maximize heat transfer. They are filled with similar amount of AB2 alloy. The MHHC system was able to produce a compression ratio (CR) as high as of 84.7 for inlet and outlet hydrogen pressures of 1.44 and 122 bar for a temperature span of 23 to 120°C.

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Realistic simulation in a single stage hydrogen compressor based on AB2 alloys

Cited by 23 publications

References 26 publications

Simulation and design of a three-stage metal hydride hydrogen compressor based on experimental thermodynamic data

Simulation and design of a three-stage metal hydride hydrogen compressor based on experimental thermodynamic data

Research and development of hydrogen carrier based solutions for hydrogen compression and storage

Experimental behaviour of a three-stage metal hydride hydrogen compressor

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