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The energy transition for a net-zero future will require deep decarbonisation that hydrogen is uniquely positioned to facilitate. This technoeconomic study considers renewable hydrogen production, transmission and storage for energy networks using the National Electricity Market (NEM) region of Eastern Australia as a case study. Plausible growth projections are developed to meet domestic demands for gas out to 2040 based on industry commitments and scalable technology deployment. Analysis using the discounted cash flow technique is performed to determine possible levelised cost figures for key processes out to 2050. Variables include geographic limitations, growth rates and capacity factors to minimise abatement costs compared to business-as-usual natural gas forecasts. The study provides an optimistic outlook considering renewable power-to-X opportunities for blending, replacement and gas-to-power to show viable pathways for the gas transition to green hydrogen. Blending is achievable with modest (3%) green premiums this decade, and substitution for natural gas combustion in the long-term is likely to represent an abatement cost of AUD 18/tCO2-e including transmission and storage.
Nicholas Gurieff; Behdad Moghtaderi; Rahman Daiyan; Rose Amal. Gas Transition: Renewable Hydrogen’s Future in Eastern Australia’s Energy Networks. Energies 2021, 14, 3968 .
AMA StyleNicholas Gurieff, Behdad Moghtaderi, Rahman Daiyan, Rose Amal. Gas Transition: Renewable Hydrogen’s Future in Eastern Australia’s Energy Networks. Energies. 2021; 14 (13):3968.
Chicago/Turabian StyleNicholas Gurieff; Behdad Moghtaderi; Rahman Daiyan; Rose Amal. 2021. "Gas Transition: Renewable Hydrogen’s Future in Eastern Australia’s Energy Networks." Energies 14, no. 13: 3968.
Human health is a key pillar of modern conceptions of sustainability. Humanity pays a considerable price for its dependence on fossil-fueled energy systems, which must be addressed for sustainable urban development. Public hospitals are focal points for communities and have an opportunity to lead the transition to renewable energy. We have reimagined the healthcare energy ecosystem with sustainable technologies to transform hospitals into networked clean energy hubs. In this concept design, hydrogen is used to couple energy with other on-site medical resource demands, and vanadium flow battery technology is used to engage the public with energy systems. This multi-generation system would reduce harmful emissions while providing reliable services, tackling the linked issues of human and environmental health.
Nicholas Gurieff; Donna Green; Ilpo Koskinen; Mathew Lipson; Mark Baldry; Andrew Maddocks; Chris Menictas; Jens Noack; Behdad Moghtaderi; Elham Doroodchi. Healthy Power: Reimagining Hospitals as Sustainable Energy Hubs. Sustainability 2020, 12, 8554 .
AMA StyleNicholas Gurieff, Donna Green, Ilpo Koskinen, Mathew Lipson, Mark Baldry, Andrew Maddocks, Chris Menictas, Jens Noack, Behdad Moghtaderi, Elham Doroodchi. Healthy Power: Reimagining Hospitals as Sustainable Energy Hubs. Sustainability. 2020; 12 (20):8554.
Chicago/Turabian StyleNicholas Gurieff; Donna Green; Ilpo Koskinen; Mathew Lipson; Mark Baldry; Andrew Maddocks; Chris Menictas; Jens Noack; Behdad Moghtaderi; Elham Doroodchi. 2020. "Healthy Power: Reimagining Hospitals as Sustainable Energy Hubs." Sustainability 12, no. 20: 8554.
The world is moving to the next phase of the energy transition with high penetrations of renewable energy. Flexible and scalable redox flow battery (RFB) technology is expected to play an important role in ensuring electricity network security and reliability. Innovations continue to enhance their value by reducing parasitic losses and maximizing available energy over broader operating conditions. Simulations of vanadium redox flow battery (VRB/VRFB) cells were conducted using a validated COMSOL Multiphysics model. Cell designs are developed to reduce losses from pump energy while improving the delivery of active species where required. The combination of wedge-shaped cells with static mixers is found to improve performance by reducing differential pressure and concentration overpotential. Higher electrode compression at the outlet optimises material properties through the cell, while the mixer mitigates concentration gradients across the cell. Simulations show a 12% lower pressure drop across the cell and a 2% lower charge voltage for improved energy efficiency. Wedge-shaped cells are shown to offer extended capacity during cycling. The prototype mixers are fabricated using additive manufacturing for further studies. Toroidal battery designs incorporating these innovations at the kW scale are developed through inter-disciplinary collaboration and rendered using computer aided design (CAD).
Nicholas Gurieff; Declan Finn Keogh; Mark Baldry; Victoria Timchenko; Donna Green; Ilpo Koskinen; Chris Menictas. Mass Transport Optimization for Redox Flow Battery Design. Applied Sciences 2020, 10, 2801 .
AMA StyleNicholas Gurieff, Declan Finn Keogh, Mark Baldry, Victoria Timchenko, Donna Green, Ilpo Koskinen, Chris Menictas. Mass Transport Optimization for Redox Flow Battery Design. Applied Sciences. 2020; 10 (8):2801.
Chicago/Turabian StyleNicholas Gurieff; Declan Finn Keogh; Mark Baldry; Victoria Timchenko; Donna Green; Ilpo Koskinen; Chris Menictas. 2020. "Mass Transport Optimization for Redox Flow Battery Design." Applied Sciences 10, no. 8: 2801.
The world is moving to the next phase of the energy transition with high penetrations of renewable energy. Flexible and scalable redox flow battery (RFB) technology is expected to play an important role in ensuring electricity network security and reliability. Continuous performance improvements will further enhance their value by reducing parasitic losses and maximizing available energy conversion over broader operating conditions. Concentration overpotentials from poor internal reactant distribution at high and low states of charge (SOC) limit power densities and are thus an important area of investigation. However, efforts to address these coupled electrochemical phenomena can compromise mechanical performance. Modelling and simulation of cell design innovations have shown it is possible to reduce losses from pump energy while increasing the availability of active species where required. The combination of wedge-shaped cells with static mixers investigated in this paper can reduce pressure drop and improve energy efficiency. Toroidal vanadium redox flow battery (VRB/VRFB) designs incorporating this innovation are presented for further development to improve community engagement with the technology.
Nicholas Gurieff; Declan Finn Keogh; Mark Bladry; Victoria Timchenko; Donna Green; Ilpo Koskinen; Chris Menictas. Mass Transport Optimization for Redox Flow Battery Design. 2020, 1 .
AMA StyleNicholas Gurieff, Declan Finn Keogh, Mark Bladry, Victoria Timchenko, Donna Green, Ilpo Koskinen, Chris Menictas. Mass Transport Optimization for Redox Flow Battery Design. . 2020; ():1.
Chicago/Turabian StyleNicholas Gurieff; Declan Finn Keogh; Mark Bladry; Victoria Timchenko; Donna Green; Ilpo Koskinen; Chris Menictas. 2020. "Mass Transport Optimization for Redox Flow Battery Design." , no. : 1.
Redox flow batteries (RFBs), provide a safe and cost-effective means of storing energy at grid-scale, and will play an important role in the decarbonization of global electricity networks. Several approaches have been explored to improve their efficiency and power density, and recently, cell geometry modification has shown promise in efforts to address mass transport limitations which affect electrochemical and overall system performance. Flow-by electrode configurations have demonstrated significant power density improvements in laboratory testing, however, flow-through designs with conductive felt remain the standard at commercial scale. Concentration gradients exist within these cells, limiting their performance. A new concept of redistributing reactants within the flow frame is introduced in this paper. This research shows a 60% improvement in minimum V3+ concentration within simulated vanadium redox flow battery (VRB/VRFB) cells through the application of static mixers. The enhanced reactant distribution showed a cell voltage improvement by reducing concentration overpotential, suggesting a pathway forward to increase limiting current density and cycle efficiencies in RFBs.
Nicholas Gurieff; Declan Finn Keogh; Victoria Timchenko; Chris Menictas. Enhanced Reactant Distribution in Redox Flow Cells. Molecules 2019, 24, 3877 .
AMA StyleNicholas Gurieff, Declan Finn Keogh, Victoria Timchenko, Chris Menictas. Enhanced Reactant Distribution in Redox Flow Cells. Molecules. 2019; 24 (21):3877.
Chicago/Turabian StyleNicholas Gurieff; Declan Finn Keogh; Victoria Timchenko; Chris Menictas. 2019. "Enhanced Reactant Distribution in Redox Flow Cells." Molecules 24, no. 21: 3877.
N. Gurieff; C.Y. Cheung; V. Timchenko; C. Menictas. Performance enhancing stack geometry concepts for redox flow battery systems with flow through electrodes. Journal of Energy Storage 2019, 22, 219 -227.
AMA StyleN. Gurieff, C.Y. Cheung, V. Timchenko, C. Menictas. Performance enhancing stack geometry concepts for redox flow battery systems with flow through electrodes. Journal of Energy Storage. 2019; 22 ():219-227.
Chicago/Turabian StyleN. Gurieff; C.Y. Cheung; V. Timchenko; C. Menictas. 2019. "Performance enhancing stack geometry concepts for redox flow battery systems with flow through electrodes." Journal of Energy Storage 22, no. : 219-227.
Vanadium redox flow batteries (VRFBs) offer great promise as a safe, cost effective means of storing electrical energy on a large scale and will certainly have a part to play in the global transition to renewable energy. To unlock the full potential of VRFB systems, however, it is necessary to improve their power density. Unconventional stack design shows encouraging possibilities as a means to that end. Presented here is the novel concept of variable porous electrode compression, which simulations have shown to deliver a one third increase in minimum limiting current density together with a lower pressure drop when compared to standard uniform compression cell designs.
Nicholas Gurieff; Victoria Timchenko; Chris Menictas. Variable Porous Electrode Compression for Redox Flow Battery Systems. Batteries 2018, 4, 53 .
AMA StyleNicholas Gurieff, Victoria Timchenko, Chris Menictas. Variable Porous Electrode Compression for Redox Flow Battery Systems. Batteries. 2018; 4 (4):53.
Chicago/Turabian StyleNicholas Gurieff; Victoria Timchenko; Chris Menictas. 2018. "Variable Porous Electrode Compression for Redox Flow Battery Systems." Batteries 4, no. 4: 53.