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Patent
Hydrexia | Date: 2016-07-13

A system for discharging hydrogen from two or more hydrogen storage vessels (1A, 1B, 1C) containing solid hydrogen storage material. The system includes at least one hydrogen supply line for connecting the hydrogen storage vessels to a hydrogen demand (3), and energy delivery system (6A, 6B, 6C) to provide heat to the hydrogen storage material in each hydrogen storage vessel to desorb hydrogen from the solid hydrogen storage material, and one or more supply connection conduits (4A, 4B, 4C) for connecting the supply line of lines to the hydrogen storage vessels (1A, 1B, 1C). Each supply connection conduit has a backflow prevention device (5A, 5B, 5C) to prevent hydrogen in the supply line from flowing back into the hydrogen storage vessels (1A, 1B, 1C). Also disclosed is a system for delivering a supply of hydrogen to a hydrogen supply line including a control system (7) to determine the timing of activation of an energy delivery system based (6A, 6B, 6C) on the hydrogen demand in the hydrogen supply line. The control system (7) activates the energy delivery system based (6A, 6B, 6C) in the next hydrogen storage unit to provide a sufficient period of time for the material in the next hydrogen storage vessel to heat to the temperature at which hydrogen is provided at the supply pressure for the hydrogen supply line.


Nogita K.,University of Queensland | McDonald S.D.,University of Queensland | Duguid A.,Hydrexia | Tsubota M.,Physonit Inc. | Gu Q.F.,Australian Synchrotron
Journal of Alloys and Compounds | Year: 2013

The hypo-eutectic Mg-Mg2Ni system can be modified by trace elemental additions of Na which change the microstructure and the functional properties of the alloy. The modified microstructure results in improvements to the hydrogen storage properties. In alloys of optimal composition, it has been shown that the reversible storage of 6.5-7 wt% H2 is possible at a rate of reaction that is realistic for industrial applications. This research investigates the release of H2 in air under atmospheric pressure as well as under 0.2 MPa atmospheres of Ar, CO2, N2, and H2. The release kinetics were characterised using in situ crystallographic phase transformation analysis obtained by synchrotron Powder X-ray diffraction (PXRD) at the Australian Synchrotron. The mole fraction of MgH2, Mg, Mg2Ni, and Mg2NiH4 was determined by Rietveld refinement using RIETAN-FP. It was found that the hydrogen release temperature largely depends on the atmosphere. © 2013 Elsevier B.V. All rights reserved.


Moroz S.,Hydrexia | Tan X.F.,Hydrexia | Pierce J.,Hydrexia | Greaves M.,Hydrexia | And 3 more authors.
Journal of Alloys and Compounds | Year: 2013

Magnesium based metal hydrides have a number of attractive properties for hydrogen storage, particularly the high storage density and the safety benefits of low pressure operation. A hypo-eutectic Mg-Mg2Ni alloy has been developed. The material can be produced at a much lower cost than ball-milled materials while achieving a reversible storage of 6.5-7 wt% hydrogen at a rate of reaction that is acceptable for existing industrial applications. This alloy has been employed in a series of increasingly large prototype systems, reaching commercial scale in 2010 with a system storing 22 kg of hydrogen, appropriate for industrial merchant applications. The technology is also under development for larger scale applications such as refueling infrastructure and energy storage. This paper will discuss the potential applications of these systems and their technical and economic comparison to traditional compressed gas hydrogen storage and delivery. © 2013 Elsevier B.V. All rights reserved.


Nogita K.,University of Queensland | Jenke M.,Hydrexia | Wood D.,Hydrexia | Duguid A.,Hydrexia | And 2 more authors.
Materials Science Forum | Year: 2010

Alloys of the hypo-eutectic Mg-Mg2Ni system can be modified by trace elemental additions which change the microstructure and the functional properties. The modified microstructure results in improvements to the hydrogen storage properties. In alloys of optimal composition, it has been shown that the reversible storage of 6.5-7wt% H2 is possible at a rate of reaction that is realistic for industrial applications. This paper discusses the mechanism of hydrogen release in air at atmospheric pressure with in-situ crystallographic phase transformation analysis obtained by synchrotron radiation X-ray diffraction (XRD) and X-ray absorption fine structure (XAFS). © (2010) Trans Tech Publications.


Hydrexia | Entity website

Solid state hydrogen storage Hydrexia uses novel hydride materials to make low pressure hydrogen storage systems with high storage densities that are safer and cost less than existing compressed gas systems


Production facility established for hydrogen storage systems 08 February 2016 The commercialisation of Hydrexias unique hydrogen storage technology has taken another significant step forward with the establishment of a low volume production facility in Queensland, Australia. The 5,000m2 facility in Brisbane is dedicated to the assembly and verification of the modular hydrogen storage vessels ...


Hydrexia | Entity website

The Company Hydrexia is disrupting the industrial hydrogen storage and supply chain at a cost structure that has never been seen before. Hydrexias breakthrough products provide significant CAPEX and OPEX savings to the customer and reduce the hydrogen storage and supply footprint by 75% over conventional gas storage and transportation methods ...


Patent
Hydrexia | Date: 2011-02-23

A hydrogen vessel comprising a fluid communication port, an outer vessel and an inner compartment. The inner vessel contains a hydrogen storage material, such as a metal hydride. In one embodiment the inner vessel is mechanically isolated from the outer vessel. The separation between the outer and inner vessel provides a peripheral volume between each vessel. The peripheral volume about the inner compartment may be fluidly isolated from the inner compartment. The hydrogen storage unit further includes a fluid pressure device in communication with the peripheral volume; and a controller for controlling the fluid pressure device during desorption and absorption.


Patent
Hydrexia | Date: 2010-02-23

A system for discharging hydrogen from two or more hydrogen storage vessels (1A, 1B, 1C) containing solid hydrogen storage material. The system includes at least one hydrogen supply line for connecting the hydrogen storage vessels to a hydrogen demand (3), an energy delivery system (6A, 6B, 6C) to provide heat to the hydrogen storage material in each hydrogen storage vessel to desorb hydrogen from the solid hydrogen storage material, and one or more supply connection conduits (4A, 4B, 4C) for connecting the supply line or lines to the hydrogen storage vessels (1A, 1B, 1C). Each supply connection conduit has a backflow prevention device (5A, 5B, 5C) to prevent hydrogen in the supply line from flowing back into the hydrogen storage vessels (1A, 1B, 1C). Also disclosed is a system for delivering a supply of hydrogen to a hydrogen supply line including a control system (7) to determine the timing of activation of an energy delivery system based (6A, 6B, 6C) on the hydrogen demand in the hydrogen supply line. The control system (7) activates the energy delivery system (6A, 6B, 6C) in the next hydrogen storage unit to provide a sufficient period of time for the material in the next hydrogen storage vessel to heat to the temperature at which hydrogen is provided at the supply pressure for the hydrogen supply line.

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