Australia

The optimization of hybrid renewable multi-generation systems is crucial for enhancing energy efficiency reducing costs and ensuring sustainable power generation. These factors can be significantly affected by system designs optimization methods climate changes and varying energy demands. The optimization of a stand-alone hybrid renewable energy system (HRES) that integrates various combinations of electricity heating cooling hydrogen Read More

Green hydrogen represents a critical underpinning technology for achievingcarbon neutrality. Although researchers often fixate on its energy inputs atruly ‘green’ hydrogen production process would also be sustainable in termsof water and materials inputs. To address this holistic challenge we demon-strate a new green hydrogen production system which can utilize secondarywastewater as the input (preserving scarce fresh water supplies for drinkingan Read More

This study investigates the techno-economic feasibility of an off-grid integrated solar/wind/hydrokinetic plant to co-generate electricity and hydrogen for a remote micro-community. In addition to the techno-economic viability assessment of the proposed system via HOMER (hybrid optimization of multiple energy resources) a sensitivity analysis is conducted to ascertain the impact of ±10% fluctuations in wind speed solar radiation temperature and water ve Read More

Large-scale hydrogen storage at scales ranging from gigawatt-hours (GWh) to terawatt-hours (TWh) is currently projected to be an important component of the lowest cost options for a 100% variable renewable energy system driven partly by benefits to the grid from converting variable renewable electricity into hydrogen and partly by the anticipated growing role of hydrogen in a future net-zero energy system. Lined engineered cavities (LEC)s are among Read More

The emergence and design of hydrogen transport infrastructures are crucial steps towards the development of a hydrogen economy. However pipeline routing remains underdeveloped in hydrogen infrastructure design models despite its significant impact on the resultant cost and network configuration. Many previous studies assume uniform cost surfaces on which pipelines are designed. Studies that consider a variable cost surface focus on desig Read More

Temporal decomposition methods aim to solve optimisation problems by converting one problem over a large time series into a series of subproblems over shorter time series. This paper introduces one such method where subproblems are defined over a window that moves back and forth repeatedly over the length of the large time series creating a convergent sequence of solutions and mitigating some of the boundary considerations prevalent in other Read More

Hydrogen has become an important component of the global transition to zero-carbon economies. Low-carbon and green hydrogen gas and fuel cell technology for domestic household use will depend on skilled practi tioners particularly gasfitters to convert install and maintain hydrogen-based appliances. Upskilling gasfitters to work with hydrogen is critical to transitioning from natural gas to hydrogen for heating and cooking. Yet limited research exi Read More

Renewable hydrogen production is a pivotal technology in transitioning to sustainable energy and is essential for global decarbonisation efforts. This study explores the integration of hydrogen production into sugarcane bio refineries which have shifted from traditional sugar production to integrated bioenergy hubs. Specifically steam reforming of ethanol was selected as the process for hydrogen generation. A comprehensive techno-economic analysis w Read More

Metal hydride-based hydrogen storage (MHHS) has been used for several purposes including mobile and stationary applications. In general the overall MHHS performance for both applications depends on three main factors which are the appropriate selection of metal hydride material uses design configurations of the MHHS based on the heat exchanger and overall operating conditions. However there are different specific requirements for the two applicatio Read More

Hydrogen injection (HI) is an emerging decarbonisation technology for ironmaking blast furnaces (BFs) yet its impact on the in-furnace phenomenon in the raceway of an industry BF remains unclear. In this study an industrialscale Reactive Computational Fluid Dynamic Discrete Element Method coupling model (rCFD-DEM) is developed to study the impacts of HI on the raceway dynamics and coke combustion inside an industrial-scale BF. To overcome the l Read More