Publications

Hydrogen holds immense potential to assist in the transition from fossil fuels to sustainable energy sources but its environmental impact depends on how it is produced. This study introduces the pale-blue hydrogen production method which is a hybrid approach utilizing both carbon capture and bioenergy inputs. Comparative life cycle analysis is shown for grey blue green and pale-blue hydrogen using cumulative energy demand carbon footprint (CF) and w Read More

Sunlight-driven water splitting allows renewable hydrogen to be produced from abundant and environmentally benign water. Large-scale societal implementation of this green fuel production technology within energy generation systems is essential for the establishment of sustainable future societies. Among various technologies photocatalytic water splitting using particulate semiconductors has attracted increasing attention as a method to pro Read More

The application of hydrogen in modern farming is transitioning from a conceptual idea to a practical reality poised to meet future agricultural machinery requirements and transition goals. Increasing tensions between farmers and various institutions underscore the growing sensitivity around fossil fuel dependency in the agricultural sector particularly in northern economies. This study investigates the economic feasibility of using decentralized hy Read More

Demand for low-carbon sources of hydrogen and power is expected to rise dramatically in the coming years. Individually steam methane reformers (SMRs) and combined cycle gas power plants (CCGTs) when combined with carbon capture utilisation and storage (CCUS) can produce large quantities of ondemand decarbonised hydrogen and power respectively. The ongoing trend towards the development of CCUS clusters means that both processes may op Read More

The safety of hydrogen-blended natural gas (HBNG) in a confined space is an issue especially for ventilation processes. In this study leakage and ventilation processes of low-pressure HBNG with different hydrogen-blended ratio (HBR) in a confined space are simulated and validated by experiment based on similarity criteria. For the leakage process the leak direction and HBR do not significantly affect gas accumulation behaviour. The required time for Read More

Hydrogen production from sunlight using innovative photocatalytic and photoelectrochemical systems offers decentralized sustainable energy solutions with potential applications in remote off-grid locations.Photocatalytic hydrogen production has the potential to transform clean cooking by reducing dependency on wood and charcoal in low-resource settings addressing significant health and environmental challenges.Photocatalytic reactors could also be u Read More

The sorption-enhanced steam gasification of biomass (SEBSG) is considered a prospective thermo-chemical technology for high-purity H2 production with in-situ CO2 capture. Fundamental concepts and operating conditions of SEBSG technology were summarized in this review. Considerable industrial demonstration units have been conducted on pilot scales for large-scale availability of the SEBSG process. The influence of process parameters su Read More

This article proposes a novel open-circuit switch fault diagnosis method (FDM) for a three-level interleaved buck converter (TLIBC) in a hydrogen production system based on the water electrolysis process. The control algorithm is suitably modified to ensure the same hydrogen production despite the fault. The TLIBC enables the interfacing of the power source (i.e. low-carbon energy sources) and electrolyzer while driving the hydrogen production of the s Read More

This paper deals with proton exchange membrane (PEM) electrolyzers directly coupled with a photovoltaic source. It proposes a method to increase the energy delivered to the electrolyzer by reconfiguring the electrical connection of the arrays according to solar radiation. Unlike the design criterion proposed by the literature the suggested approach considers a source obtained by connecting arrays in parallel depending on solar radiation based on a fix Read More

A real-time on-site monitoring of the concentration of hydrogen and the heating value of a blend of hydrogen and natural gas is of key importance for its safe distribution in existing pipelines as proposed by the ‘Power-toGas’ concept. Although current gas chromatography (PGC) methods deliver this information accurately they are unsuitable for a quick and pipelineintegrated measurement. We analyse the possibility to monitor this blend with a combinatio Read More