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Lock-In Effects on the Energy Sector: Evidence from Hydrogen Patenting Activities
Apr 2022
Publication
The aim of the paper is to analyze how regulatory design and its framework’s topics other than macroeconomic factors might impact green innovation by taking into consideration a brand-new renewable source of energy that is becoming more and more important in recent years: hydrogen and fuel cell patenting activities. Such activities have been used as a proxy for green technological change in a panel data of 52 countries over a 6-year period. Read More
Governing the UK’s Transition to Decarbonised Heating: Lessons from a Systematic Review of Past and Ongoing Heat Transitions
May 2020
Publication
According to the UK’s Committee on Climate Change the economically efficient achievement of Government’s legally-binding carbon-reduction target will require full decarbonisation of all heat in buildings and the decarbonisation of most industrial heat over the next 20 to 30 years (BEIS 2018). This goliath task is not unprecedented. Indeed the scale of this transition is similar to the UK’s former transition from coal to natural gas heating. Albeit the rate of Read More
The Influence of the Hydrogen Supply Modes on a Hydrogen Refueling Station
Apr 2020
Publication
Setting up and operating a hydrogen refueling station is a critical part of current drive for fuel cell vehicles. In setting up a hydrogen refueling station (HRS) the investor concerns of the capacity of HRS the quality of hydrogen the capital requirement of the station and the modes of hydrogen supply; interestingly the supply modes of hydrogen further influences the safety of the station the cost of hydrogen the energy consumption of supply and the area of Read More
Conceptual Propulsion System Design for a Hydrogen-powered Regional Train
Apr 2015
Publication
Many railway vehicles use diesel as their energy source but exhaust emissions and concerns about economical fuel supply demand alternatives. Railway electrification is not cost effective for some routes particularly low-traffic density regional lines. The journey of a regional diesel–electric train is simulated over the British route Birmingham Moor Street to Stratford-upon-Avon and return to establish a benchmark for the conceptual design of a hydrog Read More
Study of the Co-production of Butanol and Hydrogen by Immobilizing Clostridium Acetobutylicum CICC8012
Mar 2019
Publication
Three kinds of carrier materials activated carbon bagasse and brick were used as immobilizing carriers during fermentation by Clostridium acetobutylicum CICC8012. Compared with cell suspended fermentation enhanced fermentation performance was achieved during immobilizing cell fermentation with shorter fermentation time required. During the experiments hydrogen and butanol appear to be competitive events. The best fermentation performance Read More
Multi-Tubular Reactor for Hydrogen Production CFD Thermal Design and Experimental Testing
Jan 2019
Publication
This study presents the Computational Fluid Dynamics (CFD) thermal design and experimental tests results for a multi-tubular solar reactor for hydrogen production based on the ferrite thermochemical cycle in a pilot plant in the Plataforma Solar de Almería (PSA). The methodology followed for the solar reactor design is described as well as the experimental tests carried out during the testing campaign and characterization of the reactor. The CFD Read More
Concepts for Improving Hydrogen Storage in Nanoporous Materials
Feb 2019
Publication
Hydrogen storage in nanoporous materials has been attracting a great deal of attention in recent years as high gravimetric H2 capacities exceeding 10 wt% in some cases can be achieved at 77 K using materials with particularly high surface areas. However volumetric capacities at low temperatures and both gravimetric and volumetric capacities at ambient temperature need to be improved before such adsorbents become practically viable. This article Read More
On the Response of a Lean-premixed Hydrogen Combustor to Acoustic and Dissipative-dispersive Entropy Waves
May 2019
Publication
Combustion of hydrogen or hydrogen containing blends in gas turbines and industrial combustors can activate thermoacoustic combustion instabilities. Convective instabilities are an important and yet less investigated class of combustion instability that are caused by the so called “entropy waves”. As a major shortcoming the partial decay of these convective-diffusive waves in the post-flame region of combustors is still largely unexplored. This paper the Read More
Energy integration – The Covid-19 Crisis and Clean Energy Progress – Analysis Report
Jun 2020
Publication
The Covid-19 pandemic has dealt a massive blow to countries around the world choking economies and transforming daily life for billions of people. This extraordinary disruption has significantly impacted the energy sector with worrying implications for clean energy transitions. Some key clean energy technologies have been encouragingly resilient to the effects of the crisis but so far there is little to suggest that the dramatic structural progress Read More
Risk Assessment and Ventilation Modeling for Hydrogen Vehicle Repair Garages
Sep 2019
Publication
The availability of repair garage infrastructure for hydrogen fuel cell vehicles is becoming increasingly important for future industry growth. Ventilation requirements for hydrogen fuel cell vehicles can affect both retrofitted and purpose-built repair garages and the costs associated with these requirements can be significant. A hazard and operability (HAZOP) study was performed to identify key risk-significant scenarios related to hydrogen vehicles in Read More
Review of Renewable Energy-based Hydrogen Production Processes for Sustainable Energy Innovation
Dec 2019
Publication
In this review we primarily analyze the hydrogen production technologies based on water and biomass including the economic technological and environmental impacts of different types of hydrogen production technologies based on these materials and comprehensively compare them. Our analyses indicate that all renewable energy-based approaches for hydrogen production are more environmentally friendly than fossil-based hydrogen gene Read More
Characterization of Hydrogen Transport Accidents in Japan Based on Network Theory
Sep 2019
Publication
Realizing the hydrogen economy in Japan entails a risk assessment of its domestic hydrogen supply especially hydrogen transport by road. The first step of the risk assessment is to characterize the hydrogen transport accidents from different energy carriers. However it is difficult to characterize the accidents because hydrogen transport systems have not been fully implemented in Japan. The aim of this study is to characterize the hydrogen transport ac Read More
20 Years of Carbon Capture and Storage - Accelerating Future Deployment
Nov 2016
Publication
Carbon capture and storage (CCS) technologies are expected to play a significant part in the global climate response. Following the ratification of the Paris Agreement the ability of CCS to reduce emissions from fossil fuel use in power generation and industrial processes – including from existing facilities – will be crucial to limiting future temperature increases to ""well below 2°C"" as laid out in the Agreement. CCS technology will also be needed to deliver "" Read More
Opportunities and Barriers of Hydrogen–Electric Hybrid Powertrain Vans: A Systematic Literature Review
Oct 2020
Publication
The environmental impact of the road transport sector together with urban freight transport growth has a notable repercussions in global warming health and economy. The need to reduce emissions caused by fossil fuel dependence and to foster the use of renewable energy sources has driven the development of zero-emissions powertrains. These clean transportation technologies are not only necessary to move people but to transport the i Read More
Hydrogen‐Rich Gas Production from Two‐Stage Catalytic Pyrolysis of Pine Sawdust with Calcined Dolomite
Jan 2022
Publication
Tao Xu,
Jue Xu and
Yongping Wu
The potential of catalytic pyrolysis of biomass for hydrogen and bio‐oil production has drawn great attention due to the concern of clean energy utilization and decarbonization. In this paper the catalytic pyrolysis of pine sawdust with calcined dolomite was carried out in a novel moving bed reactor with a two‐stage screw feeder. The effects of pyrolysis temperature (700–900 °C) and catalytic temperature (500–800 °C) on pyrolysis performance were inv Read More
Evaluation of Performance Characteristics of a Novel Hydrogen-fuelled Free-piston Engine Generator
Mar 2020
Publication
In this work we present the experimental results obtained from hydrogen fuelled spark-ignited dual piston free-piston engine generator (FPEG) prototype operated in two-stroke and four-stroke mode. The FPEG testing was successfully conducted at 3.7 compression ratio engine speed between 5 Hz and 11 Hz and with different equivalence ratios. The FPEG technical details experimental set-up and operational control are explained in detail. Performance Read More
Hydrogen and Fuel Cell Vehicles UN Global Technical Regulation No. 13: Latest Updates Reflecting Heavy Duty Vehicles
Sep 2019
Publication
This paper provides a detailed technical description of the United Nations Global Technical Regulation No. 13 (UN GTR #13) 1998 Agreement and contracting party obligations phase 2 activity and safety provisions being discussed and developed for heavy duty hydrogen fuel cell vehicles.
Acid Acceleration of Hydrogen Generation Using Seawater as a Reactant
Jul 2016
Publication
The present study describes hydrogen generation from NaBH4 in the presence of acid accelerator boric oxide or B2O3 using seawater as a reactant. Reaction times and temperatures are adjusted using various delivery methods: bulk addition funnel and metering pump. It is found that the transition metal catalysts typically used to generate hydrogen gas are poisoned by seawater. B2O3 is not poisoned by seawater; in fact reaction times are conside Read More
Hydrogen-assisted Cracking of GMA Welded 960 & A Grade High-strength Steels
Jan 2020
Publication
High-strength steels with yield strength of 960 MPa are susceptible to hydrogen-assisted cracking (HAC) during welding processing. In the present paper the implant test is used to study HAC in a quenched and tempered steel S960QL and a high-strength steel produced by thermo-mechanical controlled process S960MC. Welding is performed using the gas-metal arc welding process. Furthermore diffusible hydrogen concentration (HD) in arc weld metal is d Read More
Some Issues Concerning the CFD Modelling of Confined Hydrogen Releases
Sep 2017
Publication
In SUSANA E.U. project a rather broad CFD benchmarking exercise was performed encompassing a number of CFD codes a diversity of turbulence models... It is concluded that the global agreement is good. But in this particular situation the experimental data to compare with were known to the modelers. In performing this exercise the present authors explored the influence of some modelling choices which may have a significant impact on the results Read More
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