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The Social Dimensions of Moving Away From Gas Cookers and Hobs- Challenges and Opportunities in Transition to Low Carbon Cooking
May 2020
Publication
Heat is one of the UK’s largest energy-consuming and carbon-emitting sectors and potentially the most difficult to decarbonise. The UK’s Clean Growth Strategy identifies that heat decarbonisation in buildings and industry will likely involve shifting away from natural gas to alternative energy vectors like electricity and hydrogen. This will mean transition of existing cooking appliances away from natural gas resulting in social implications that require detailed analysis for optimal transition.
This report investigates the social dimensions of heat decarbonisation in cooking appliances specifically moving away from gas cookers and hobs. It presents a first step in tackling the following questions.
This report investigates the social dimensions of heat decarbonisation in cooking appliances specifically moving away from gas cookers and hobs. It presents a first step in tackling the following questions.
- How are current carbon-intensive cooking technologies part of existing cooking practices and broader social and material structures?
- What are the challenges and opportunities for cooking heat decarbonisation in terms of consumer acceptance carbon and energy reductions and business/market opportunities?
- What interventions are needed to realise policy objectives of heat de-carbonisation?
- The report builds on interviews with BEIS’s long-term heat strategy experts and key external stakeholders together with a review of secondary data on trends in cooking and appliance use in the UK. Further it presents an annotated bibliography of literature on the social implications of heat decarbonisation and sustainable food transitions more broadly. The multidisciplinary review of the literature is structured around Southerton et al.’s (2011) ISM (Individual- Social- and Material-context) framework for a systemic review of the various change-agents required for transition. Finally a comparative review of the social challenges and opportunities identified in the ISM contexts is presented along with the potential policy interventions in each. The report concludes with a list of recommendations in terms of evidence and data gathering; research; policy; and a set of general recommendations for heat decarbonisation policy.
Influence of Pressure, Temperature and Organic Surface Concentration on Hydrogen Wettability of Caprock; Implications for Hydrogen Geo-storage
Sep 2021
Publication
Hydrogen (H2) as a cleaner fuel has been suggested as a viable method of achieving the decarbonization objectives and meeting increasing global energy demand. However successful implementation of a full-scale hydrogen economy requires large-scale hydrogen storage (as hydrogen is highly compressible). A potential solution to this challenge is injecting hydrogen into geologic formations from where it can be withdrawn again at later stages for utilization purposes. The geostorage capacity of a porous formation is a function of its wetting characteristics which strongly influence residual saturations fluid flow rate of injection rate of withdrawal and containment security. However literature severely lacks information on hydrogen wettability in realistic geological and caprock formations which contain organic matter (due to the prevailing reducing atmosphere). We therefore measured advancing (θa) and receding (θr) contact angles of mica substrates at various representative thermo-physical conditions (pressures 0.1-25 MPa temperatures 308–343 K and stearic acid concentrations of 10−9 - 10−2 mol/L). The mica exhibited an increasing tendency to become weakly water-wet at higher temperatures lower pressures and very low stearic acid concentration. However it turned intermediate-wet at higher pressures lower temperatures and increasing stearic acid concentrations. The study suggests that the structural H2 trapping capacities in geological formations and sealing potentials of caprock highly depend on the specific thermo-physical condition. Thus this novel data provides a significant advancement in literature and will aid in the implementation of hydrogen geo-storage at an industrial scale.
Alternative Marine Fuels: Prospects Based on Multi-criteria Decision Analysis Involving Swedish Stakeholders
May 2019
Publication
There is a need for alternative marine fuels in order to reduce the environmental and climate impacts of shipping in the short and long term. This study assesses the prospects for seven alternative fuels for the shipping sector in 2030 including biofuels by applying a multi-criteria decision analysis approach that is based on the estimated fuel performance and on input from a panel of maritime stakeholders and by considering explicitly the influence of stakeholder preferences. Seven alternative marine fuels—liquefied natural gas (LNG) liquefied biogas (LBG) methanol from natural gas renewable methanol hydrogen for fuel cells produced from (i) natural gas or (ii) electrolysis based on renewable electricity and hydrotreated vegetable oil (HVO)—and heavy fuel oil (HFO) as benchmark are included and ranked by ten performance criteria and their relative importance. The criteria cover economic environmental technical and social aspects. Stakeholder group preferences (i.e. the relative importance groups assign to the criteria) influence the ranking of these options. For ship-owners fuel producers and engine manufacturers economic criteria in particular the fuel price are the most important. These groups rank LNG and HFO the highest followed by fossil methanol and then various biofuels (LBG renewable methanol and HVO). Meanwhile representatives from Swedish government authorities prioritize environmental criteria specifically GHG emissions and social criteria specifically the potential to meet regulations ranking renewable hydrogen the highest followed by renewable methanol and then HVO. Policy initiatives are needed to promote the introduction of renewable marine fuels.
Study on Temper Embrittlement and Hydrogen Embrittlement of a Hydrogenation Reactor by Small Punch Test
Jun 2017
Publication
The study on temper embrittlement and hydrogen embrittlement of a test block from a 3Cr1Mo1/4V hydrogenation reactor after ten years of service was carried out by small punch test (SPT) at different temperatures. The SPT fracture energy Esp (derived from integrating the load-displacement curve) divided by the maximum load (Fm) of SPT was used to fit the Esp/Fm versus-temperature curve to determine the energy transition temperature (Tsp) which corresponded to the ductile-brittle transition temperature of the Charpy impact test. The results indicated that the ratio of Esp/Fm could better represent the energy of transition in SPT compared with Esp. The ductile-to-brittle transition temperature of the four different types of materials was measured using the hydrogen charging test by SPT. These four types of materials included the base metal and the weld metal in the as-received state and the base metal and the weld metal in the de-embrittled state. The results showed that there was a degree of temper embrittlement in the base metal and the weld metal after ten years of service at 390 °C. The specimens became slightly more brittle but this was not obvious after hydrogen charging. Because the toughness of the material of the hydrogenation reactor was very good the flat samples of SPT could not characterize the energy transition temperature within the liquid nitrogen temperature. Additionally there was no synergetic effect of temper embrittlement and hydrogen embrittlement found in 3Cr1Mo1/4V steel.
Adopting Hydrogen Direct Reduction for the Swedish Steel Industry: A Technological Innovation System (TIS) Study
Sep 2019
Publication
The Swedish steel industry stands before a potential transition to drastically lower its CO2 emissions using direct hydrogen reduction instead of continuing with coke-based blast furnaces. Previous studies have identified hydrogen direct reduction as a promising option. We build upon earlier efforts by performing a technological innovation system study to systematically examine the barriers to a transition to hydrogen direct reduction and by providing deepened quantitative empirics to support the analysis. We also add extended paper and patent analysis methodology which is particularly useful for identifying actors and their interactions in a technological system. We conclude that while the innovation system is currently focused on such a transition notable barriers remain particularly in coordination of the surrounding technical infrastructure and the issue of maintaining legitimacy for such a transition in the likely event that policies to address cost pressures will be required to support this development.
Environmental Sustainability of Renewable Hydrogen in Comparison with Conventional Cooking Fuels
Jun 2018
Publication
Hydrogen could be used as a ‘cleaner’ cooking fuel particularly in communities that rely on biomass and fossil fuels to reduce local pollution and related health effects. However hydrogen must be produced using sustainable feedstocks and energy sources to ensure that local impacts are not reduced at the expense of other impacts generated elsewhere in the life cycle. To this end this paper evaluates life cycle environmental impacts of renewable hydrogen produced in a proton-exchange membrane electrolyser using solar energy. The aim of the study is to find out if hydrogen produced in this system and used as a cooking fuel is environmentally sustainable in comparison with conventional cooking fuels typically used in developing countries such as liquefied petroleum gas (LPG) charcoal and firewood. The results suggest that hydrogen would reduce the climate change impact by 2.5–14 times to 0.04 kg CO2 eq./MJ compared to firewood (0.10 kg CO2 eq./MJ) and LPG (0.57 kg CO2 eq./MJ). Some other impacts would also be lower by 6%–35 times including depletion of fossil fuels summer smog and health effects from emissions of particulates both locally and across the rest of the life cycle. However some other impacts would increase by 6%–6.7 times such as depletion of metals and freshwater and marine ecotoxicity. These are mainly due to the solar photovoltaic panels used to generate power for the electrolyser. In terms of the local impacts the study suggests that hydrogen would reduce local pollution and related health impacts by 8%–35 times. However LPG is still environmentally a better option than hydrogen for most of the impacts both at the point of use and on a life cycle basis.
Baking Effect on Desorption of Diffusible Hydrogen and Hydrogen Embrittlement on Hot-Stamped Boron Martensitic Steel
Jun 2019
Publication
Recently hot stamping technology has been increasingly used in automotive structural parts with ultrahigh strength to meet the standards of both high fuel efficiency and crashworthiness. However one issue of concern regarding these martensitic steels which are fabricated using a hot stamping procedure is that the steel is highly vulnerable to hydrogen delayed cracking caused by the diffusible hydrogen flow through the surface reaction of the coating in a furnace atmosphere. One way to make progress in understanding hydrogen delayed fractures is to elucidate an interaction for desorption with diffusible hydrogen behavior. The role of diffusible hydrogen on delayed fractures was studied for different baking times and temperatures in a range of automotive processes for hot-stamped martensitic steel with aluminum- and silicon-coated surfaces. It was clear that the release of diffusible hydrogen is effective at higher temperatures and longer times making the steel less susceptible to hydrogen delayed fractures. Using thermal desorption spectroscopy the phenomenon of the hydrogen delayed fracture was attributed to reversible hydrogen in microstructure sites with low trapping energy.
How Hydrogen Can Help Decarbonise the Maritime Sector
Jun 2021
Publication
Hydrogen Europe is the organisation representing the interests of the European hydrogen industry. It fully adheres to the European Union’s target of climate neutrality by 2050 and supports the European Commission’s objectives to develop and integrate more renewable energy sources into the European energy mix.<br/><br/>In December 2015 in Paris a global climate agreement was reached at the UN Climate Change Conference (COP 21). The Paris Agreement is seen as a historic and landmark instrument in climate action. However the agreement is lacking emphasis on international maritime transport and the role that this sector will need to play in contributing to the decarbonisation of the global economy and in striving for a clean planet for all.<br/><br/>Hydrogen hydrogen-based fuels (such as ammonia) and hydrogen technologies offer tremendous potential for the maritime sector<br/>and if properly harnessed can significantly contribute to the decarbonisation and also mitigate the air pollution of the worldwide fleet. Hydrogen Europe will be the catalyst in this process the decarbonisation and also mitigate the air pollution of the worldwide fleet. Hydrogen Europe will be the catalyst in this process.<br/><br/>The pathway towards hydrogen and hydrogenbased fuels for the maritime sector does not come without technological and commercial challenges let alone regulatory barriers.
Prospecting Stress Formed by Hydrogen or Isotope Diffused in Palladium Alloy Cathode
Oct 2018
Publication
The objective of this project is to take into account the mechanical constraints formed by diffusion of hydrogen or tritium in watertight palladium alloy cathode. To know the origin of these it was necessary to discriminating the damaging effects encountered. Effectively hydrogen and isotope induce deformation embrittlement stress corrosion cracking and cathodic corrosion in different regions of cathode. Palladium can be alloyed with silver or yttrium to favourably increase diffusion and reduce these constraints. Effects of electrochemical factors temperature cathode structure adsorbed transient complex of palladium and porous material support are given to estimate and to limit possible damage.
Expectations, Attitudes, and Preferences Regarding Support and Purchase of Eco-friendly Fuel Vehicles
Apr 2019
Publication
This study analyses public expectations attitudes and preferences to support and purchase eco-friendly fuel vehicles. The study used a telephone survey of a sample of residents in Greater Stavanger Norway. Two cluster analyses were conducted to group the individuals based on expectations and attitudes toward eco-friendly fuel vehicles. In addition two multivariate analyses were performed to explore the determinants of support and willingness to purchase eco-friendly fuel vehicles. The study found three components of expectation to support eco-friendly fuel vehicles namely cost comfort and safety. The analysis further found four components to explain attitudes to support eco-friendly fuel vehicles: personal norm pro-technology awareness of priority and environmental degradation. Multivariate analyses confirmed that age gender and the number of cars in the household are likely to influence public preferences to support and purchase eco-friendly fuel vehicles. The results reveal that individuals tend to support the eco-friendly vehicles when the technologies meet their expectations towards cost and safety but the cost expectation is the significant factor that results in the decision to purchase the eco-friendly vehicles. The study also found that the pro-technology attitude has influenced the propensity to support and purchase the eco-friendly fuel vehicles.
Electricity-based Plastics and their Potential Demand for Electricity and Carbon Dioxide
Apr 2020
Publication
In a future fossil-free circular economy the petroleum-based plastics industry must be converted to non-fossil feedstock. A known alternative is bio-based plastics but a relatively unexplored option is deriving the key plastic building blocks hydrogen and carbon from electricity through electrolytic processes combined with carbon capture and utilization technology. In this paper the future demand for electricity and carbon dioxide is calculated under the assumption that all plastic production is electricity-based in the EU by 2050. The two most important input chemicals are ethylene and propylene and the key finding of this paper is that the electricity demand to produce these are estimated to 20 MWh/ton ethylene and 38 MWh/ton propylene and that they both could require about 3 tons of carbon dioxide/ton product. With constant production levels this implies an annual demand of about 800 TWh of electricity and 90 Mton of carbon dioxide by 2050 in the EU. If scaled to the total production of plastics including all input hydrocarbons in the EU the annual demand is estimated to 1600 TWh of electricity and 180 Mton of carbon dioxide. This suggests that a complete shift to electricity-based plastics is possible from a resource and technology point of view but production costs may be 2 to 3 times higher than today. However the long time frame of this paper creates uncertainties regarding the results and how technical economic and social development may influence them. The conclusion of this paper is that electricity-based plastics integrated with bio-based production can be an important option in 2050 since biomass resources are scarce but electricity from renewable sources is abundant.
Power-to-liquid via Synthesis of Methanol, DME or Fischer–Tropsch-fuels: A Review
Jul 2020
Publication
The conversion of H2 and CO2 to liquid fuels via Power-to-Liquid (PtL) processes is gaining attention. With their higher energy densities compared to gases the use of synthetic liquid fuels is particularly interesting in hard-to-abate sectors for which decarbonisation is difficult. However PtL poses new challenges for the synthesis: away from syngas-based continuously run large-scale plants towards more flexible small-scale concepts with direct CO2-utilisation. This review provides an overview of state of the art synthesis technologies as well as current developments and pilot plants for the most prominent PtL routes for methanol DME and Fischer–Tropsch-fuels. It should serve as a benchmark for future concepts guide researchers in their process development and allow a technological evaluation of alternative reactor designs. In the case of power-to-methanol and power-to-FT-fuels several pilot plants have been realised and the first commercial scale plants are planned or already in operation. In comparison power-to-DME is much less investigated and in an earlier stage of development. For methanol the direct CO2 hydrogenation offers advantages through less by-product formation and lower heat development. However increased water formation and lower equilibrium conversion necessitate new catalysts and reactor designs. While DME synthesis offers benefits with regards to energy efficiency operational experience from laboratory tests and pilot plants is still missing. Furthermore four major process routes for power-to-DME are possible requiring additional research to determine the optimal concept. In the case of Fischer–Tropsch synthesis catalysts for direct CO2 utilisation are still in an early stage. Consequently today’s Fischer–Tropsch-based PtL requires a shift to syngas benefiting from advances in co-electrolysis and reverse water-gas shift reactor design.
Synthetic Natural Gas Production from CO2 and Renewable H2: Towards Large-scale Production of Ni–Fe Alloy Catalysts for Commercialization
Apr 2020
Publication
Synthetic natural gas (SNG) is one of the promising energy carriers for the excessive electricity generated from variable renewable energy sources. SNG production from renewable H2 and CO2 via catalytic CO2 methanation has gained much attention since CO2 emissions could be simultaneously reduced. In this study Ni–Fe/(MgAl)Ox alloy catalysts for CO2 methanation were prepared via hydrotalcite precursors using a rapid coprecipitation method. The effect of total metal concentration on the physicochemical properties and catalytic behavior was investigated. Upon calcination the catalysts showed high specific surface area of above 230 m2 g−1. Small particle sizes of about 5 nm were obtained for all catalysts even though the produced catalyst amount was increased by 10 times. The catalysts exhibited excellent space-time yield under very high gas space velocity (34000 h−1) irrespective of the metal concentration. The CO2 conversions reached 73–79% at 300 °C and CH4 selectivities were at 93–95%. Therefore we demonstrated the potential of large-scale production of earth-abundant Ni–Fe based catalysts for CO2 methanation and the Power-to-Gas technology.
Supporting Hydrogen Development in Australia Short Film
Jan 2021
Publication
This short film promotes Geoscience Australia's online and publicly accessible hydrogen data products. The film steps through the functionality of GA's Australian Hydrogen Opportunities Tool (AusH2) and describes the upcoming Hydrogen Economic Fairways Tool which has been created through a collaborative effort with Monash University.
Warm Pre-Strain: Strengthening the Metastable 304L Austenitic Stainless Steel without Compromising Its Hydrogen Embrittlement Resistance
Nov 2017
Publication
Plastic pre-strains were applied to the metastable 304L austenitic stainless steel at both room temperature (20 °C) and higher temperatures (i.e. 50 80 and 100 °C) and then the hydrogen embrittlement (HE) susceptibility of the steel was evaluated by cathodically hydrogen-charging and tensile testing. The 20 °C pre-strain greatly strengthened the steel but simultaneously significantly increased the HE susceptibility of the steel since α′ martensite was induced by the pre-strain causing the pre-existence of α′ martensite which provided “highways” for hydrogen to transport deep into the steel during the hydrogen-charging. Although the warm pre-strains did not strengthen the steel as significantly as the 20 °C pre-strain they retained the HE resistance of the steel. This is because the higher temperatures particularly 80 and 100 °C suppressed the α′ martensite transformation during the pre-straining. Pre-strain at a temperature slightly higher than room temperature has a potential to strengthen the metastable 304L austenitic stainless steel without compromising its initial HE resistance.
Property Optimization in As-Quenched Martensitic Steel by Molybdenum and Niobium Alloying
Apr 2018
Publication
Niobium microalloying is the backbone of modern low-carbon high strength low alloy (HSLA) steel metallurgy providing a favorable combination of strength and toughness by pronounced microstructural refinement. Molybdenum alloying is established in medium-carbon quenching and tempering of steel by delivering high hardenability and good tempering resistance. Recent developments of ultra-high strength steel grades such as fully martensitic steel can be optimized by using beneficial metallurgical effects of niobium and molybdenum. The paper details the metallurgical principles of both elements in such steel and the achievable improvement of properties. Particularly the underlying mechanisms of improving toughness and reducing the sensitivity towards hydrogen embrittlement by a suitable combination of molybdenum and niobium alloying will be discussed.
Clean or Renewable – Hydrogen and Power-to-gas in EU Energy Law
Aug 2020
Publication
Interest in hydrogen as a carbon-neutral energy carrier is on the rise around the globe including in Europe. In particular power-to-gas as a technology to transform electricity to hydrogen is receiving ample attention. This article scrutinises current updates in the energy law framework of the EU to explain the legal pre-conditions for the various possible applications of power-to-gas technology. It highlights the influence of both electricity and gas legislation on conversion storage and transmission of hydrogen and demonstrates why ‘green’ hydrogen might come with certain legal privileges under the Renewable Energy Directive attached to it as opposed to the European Commission’s so-called ‘clean’ hydrogen. The article concludes by advocating for legal system integration in EU energy law namely merging the currently distinct EU electricity and gas law frameworks into one unified EU Energy Act.
Production of Hydrogen and Methane from Lignocellulose Waste by Fermentation. A Review of Chemical Pretreatment for Enhancing the Efficiency of the Digestion Process
May 2020
Publication
In Poland lignocellulose wastes constitute about 43% of municipal waste (∼4 417 Gg). Anaerobic and/or dark fermentation are sustainable methods of lignocellulosic waste-management and contribute greatly to ever increasing demand for energy and products. This paper presents the results of the theoretical potential of methane and hydrogen yields from lignocellulosic wastes. Also state-of-the-art methods in the field of lignocellulose fermentation as well as its development and pretreatment are discussed. The main reason for applying pretreatment is the decomposition (decrystallization) of cellulose and hemicellulose and cleavage of polymers into monomers which may be more easily digested by bacteria in DF and AD fermentation processes. At current price levels the cheapest methods are basic and acidic pretreatments. Acidic pretreatment is very efficient (especially using sulfuric acids) solubilizing up to 80% of lignocellulose but strong acids produce inhibitors and are highly corrosive. Alkaline pretreatment is a competitive and even more efficient (>80%) method to acidic pretreatment especially for some rigid materials that acid cannot solubilize. Oxidative pretreatment is usually expensive but can support the sacharisation process by either alkaline or acidic methods; in the case of NMMO efficiency reaching 82%. Ion-liquid pretreatment is selective (almost 100% sacharisation) but very costly and is too expensive for hydrogen production. The last methods can be profitable if some valuable by-products results. An efficient chemical pretreatment should be preceded by physical comminution e.g. mechanical which is the cheapest one.
Hydrogen Scooter Testing and Verification Program
Nov 2012
Publication
Taiwan stands out globally in the manufacture of scooters. If fuel cell technology could be applied to the scooter Taiwan could gain an advantage in the trend for commercial applications for fct. In 2011 The Bureau of Standards Metrology and Inspection proposed this project “the Demonstration of Hydrogen Fuel Cell Scooters.” Thirty rental fuel cell scooters are to run a long distance. Evaluation during everyday use of the cells performance will be made and reported by the riders. All the evaluations will be put into consideration of future adjustments. The project is to map out a practice route in Taipei and set up a control center to follow progress. The data gathered from the practice project will help examine the performance of fuel cell scooters contributing to the creation of legal drafts and future standards. The Taiwan fuel cell industry chain is complete and the industry possesses the ability to produce key components. Thus it is a potential market in Taiwan. A review of fuel cell development conditions in Taiwan shows that the fuel cell scooters is a niche industry owing to the strength of this technology.
Hydrogen Europe's Position Paper on the Sustainable and Smart Mobility Strategy
Dec 2020
Publication
The document highlights the role of hydrogen in the decarbonisation of the transport sector. It also provides a series of policy recommendations covering all modes of transport hydrogen distribution and infrastructure and hydrogen as a fuel.
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