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The Membrane-assisted Chemical Looping Reforming Concept for Efficient H2 Production with Inherent CO2 Capture: Experimental Demonstration and Model Validation
Feb 2018
Publication
In this work a novel reactor concept referred to as Membrane-Assisted Chemical Looping Reforming (MA-CLR) has been demonstrated at lab scale under different operating conditions for a total working time of about 100 h. This reactor combines the advantages of Chemical Looping such as CO2 capture and good thermal integration with membrane technology for a better process integration and direct product separation in a single unit which in its tur Read More
Review of Thermochemical Technologies for Water and Energy Integration Systems: Energy Storage and Recovery
Jun 2022
Publication
Thermochemical technologies (TCT) enable the promotion of the sustainability and the operation of energy systems as well as in industrial sites. The thermochemical operations can be applied for energy storage and energy recovery (alternative fuel production from water/wastewater in particular green hydrogen). TCTs are proven to have a higher energy density and long-term storage compared to standard thermal storage technologies (sensible Read More
Everything About Hydrogen Podcast: Geopolitical Factors in Hydrogen Markets
Mar 2022
Publication
The EAH Team takes a break from standard format on this special episode of Everything About Hydrogen to discuss some of the geopolitical factors and considerations driving the evolution of global hydrogen markets.The podcast can be found on their website
Potential Role of Natural Gas Infrastructure in China to Supply Low-carbon Gases During 2020–2050
Oct 2021
Publication
As natural gas (NG) demand increases in China the question arises how the NG infrastructure fit into a low greenhouse gas (GHG) emissions future towards 2050. Herein the potential role of the NG infrastructure in supplying low-carbon gases during 2020–2050 for China at a provincial resolution was analyzed for different scenarios. In total four low-carbon gases were considered in this study: biomethane bio-synthetic methane hydrogen and low-carbon synt Read More
High Proton-Conductive and Temperature-Tolerant PVC-P4VP Membranes towards Medium-Temperature Water Electrolysis
Mar 2022
Publication
Water electrolysis (WE) is a highly promising approach to producing clean hydrogen. Medium-temperature WE (100–350 ◦C) can improve the energy efficiency and utilize the low-grade water vapor. Therefore a high-temperature proton-conductive membrane is desirable to realize the medium-temperature WE. Here we present a polyvinyl chloride (PVC)-poly(4vinylpyridine) (P4VP) hybrid membrane by a simple cross-linking of PVC and P4VP. The pyridi Read More
Selection of Underground Hydrogen Storage Risk Assessment Techniques
Dec 2021
Publication
The article proposes the use of the analytic hierarchy process (AHP) method to select a risk assessment technique associated with underground hydrogen storage. The initial choosing and ranking of risk assessment techniques can be considered as a multi-criteria decision problem. The usage of a decision model based on six criteria is proposed. A ranking of methods for estimating the risks associated with underground hydrogen storage is presented. The o Read More
Pulsed-Supplied Water Electrolysis via Two-Switch Converter for PV Capacity Firming
Mar 2022
Publication
Hydrogen constitutes the only carbon-free fuel that can be used for energy conversion producing water as the only by-product. With water being one of the most abundant and inexhaustible raw materials in the world and the required electricity input being provided by renewable resources the produced hydrogen via water electrolysis constitutes a green pathway towards sustainability. In this work a hybrid PV power-to-hydrogen storage and fuel cell system i Read More
Design and Simulation Studies of Hybrid Power Systems Based on Photovoltaic, Wind, Electrolyzer, and PEM Fuel Cells
May 2021
Publication
In recent years the need to reduce environmental impacts and increase flexibility in the energy sector has led to increased penetration of renewable energy sources and the shift from concentrated to decentralized generation. A fuel cell is an instrument that produces electricity by chemical reaction. Fuel cells are a promising technology for ultimate energy conversion and energy generation. We see that this system is integrated where we find that the wind Read More
The Effect of Hydrogen Containing Fuel Blends Upon Flashback in Swirl Burners
Feb 2011
Publication
Lean premixed swirl combustion is widely used in gas turbines and many other combustion Processes due to the benefits of good flame stability and blow off limits coupled with low NOx emissions. Although flashback is not generally a problem with natural gas combustion there are some reports of flashback damage with existing gas turbines whilst hydrogen enriched fuel blends especially those derived from gasification of coal and/or biomass/industrial Read More
Main Hydrogen Production Processes: An Overview
May 2021
Publication
Due to its characteristics hydrogen is considered the energy carrier of the future. Its use as a fuel generates reduced pollution as if burned it almost exclusively produces water vapor. Hydrogen can be produced from numerous sources both of fossil and renewable origin and with as many production processes which can use renewable or non-renewable energy sources. To achieve carbon neutrality the sources must necessarily be renewable a Read More
Investigation of Emission Characteristics and Lubrication Oil Properties in a Dual Diesel–Hydrogen Internal Combustion Engine
Apr 2022
Publication
Hydrogen is considered one of the main gaseous fuels due to its ability to improve thermal performance in diesel engines. However its influence on the characteristics of lubricating oil is generally ignored. Thus in the present investigation an analysis of the effect on the physical and chemical properties of lubricating oil with mixtures of diesel fuel–hydrogen was carried out and the environmental impacts of this type of mixture were assessed. The dev Read More
Design of an Architectural Element Generating Hydrogen Energy by Photosynthesis—Model Case of the Roof and Window
Jun 2022
Publication
As is well known the realization of a zero-waste society is strongly desired in a sustainable society. In particular architectural elements that provide an energy-neutral living environment are attractive. This article presents the novel environmentally friendly architectural elements that generate hydrogen energy by the photosystem II (PSII) solution extracted from waste vegetables. In the present work as an architectural element the window (PSII window pane Read More
Technical and Commercial Challenges of Proton-Exchange Membrane (PEM) Fuel Cells
Dec 2020
Publication
This review critically evaluates the latest trends in fuel cell development for portable and stationary fuel cell applications and their integration into the automotive industry. Fast start-up high efficiency no toxic emissions into the atmosphere and good modularity are the key advantages of fuel cell applications. Despite the merits associated with fuel cells the high cost of the technology remains a key factor impeding its widespread commercialization. Ther Read More
Hydrogen Storage for Mobility: A Review
Jun 2019
Publication
Numerous reviews on hydrogen storage have previously been published. However most of these reviews deal either exclusively with storage materials or the global hydrogen economy. This paper presents a review of hydrogen storage systems that are relevant for mobility applications. The ideal storage medium should allow high volumetric and gravimetric energy densities quick uptake and release of fuel operation at room temperatures and atmospheric Read More
Sensing Hydrogen Seeps in the Subsurface for Natural Hydrogen Exploration
Jun 2022
Publication
The recent detection of natural hydrogen seeps in sedimentary basin settings has triggered significant interest in the exploration of this promising resource. If large economical resources exist and can be extracted from the sub-surface this would provide an opportunity for natural hydrogen to contribute to the non-carbon-based energy mix. The detection and exploration of hydrogen gas in the sub-surface is a significant challenge that requires costly drilling s Read More
Energy Efficiency Based Control Strategy of a Three-Level Interleaved DC-DC Buck Converter Supplying a Proton Exchange Membrane Electrolyzer
Aug 2019
Publication
To face the intensive use of natural gas and other fossil fuels to generate hydrogen water electrolysis based on renewable energy sources (RES) seems to be a viable solution. Due to their fast response times and high efficiency proton exchange membrane electrolyzer (PEM EL) is the most suitable technology for long-term energy storage combined with RES. Like fuel cells the development of fit DC-DC converters is mandatory to interface the EL to the DC g Read More
Everything About Hydrogen Podcast: Digging into the Mining Industry
Jan 2021
Publication
On this episode of Everything About Hydrogen Jan Klawitter Head of International Policy for Anglo American speaks with Andrew Chris and Patrick about Anglo American's strategy for decarbonizing its mining operations and how they plan to use hydrogen and fuel cell technologies as a key part of their approach.The podcast can be found on their website
Everything About Hydrogen Podcast: Taking the Lead in the Hydrogen Economy
Sep 2021
Publication
On the season premier episode the EAH hosts are joined by the Governor of New Mexico Michelle Lujan Grisham. The State of New Mexico has the opportunity to lead the United States into the hydrogen era and the Governor and her team are poised to take the opportunity to make New Mexico the strategic center of the US hydrogen economy. The Governor is joined by New Mexico Environment Department Secretary James Kenney on the sh Read More
Development of Renewable Energy Multi-energy Complementary Hydrogen Energy System (A Case Study in China): A Review
Aug 2020
Publication
The hydrogen energy system based on the multi-energy complementary of renewable energy can improve the consumption of renewable energy reduce the adverse impact on the power grid system and has the characteristics of green low carbon sustainable etc. which is currently a global research hotspot. Based on the basic principles of hydrogen production technology this paper introduces the current hydrogen energy system topology and summarizes th Read More
Photocatalytic Hydrogen Evolution from Biomass Conversion
Feb 2021
Publication
Biomass has incredible potential as an alternative to fossil fuels for energy production that is sustainable for the future of humanity. Hydrogen evolution from photocatalytic biomass conversion not only produces valuable carbon-free energy in the form of molecular hydrogen but also provides an avenue of production for industrially relevant biomass products. This photocatalytic conversion can be realized with efficient sustainable reaction materials ( Read More
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