Category: published research

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Published at International Journal of Hydrogen Energy – Performance of biogas blended with hydrogen in a commercial self-aspirating burner

Abstract: A natural gas and carbon dioxide fuel mixture was enriched by hydrogen to experimentally measure the performance of a hydrogen and surrogate biogas fuel. The performance of various biogas qualities and hydrogen blend ratios was investigated for use in a commercial self-aspirating burner by quantifying the impact on primary air entrainment, blow-off and flashback …

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Published at Journal of Energy Storage – Human ear inspired solar thermochemical reactor for steam methane reforming with the consideration of minimum Gibbs free energy principle

Human ear inspired solar thermochemical reactor for steam methane reforming with the consideration of minimum Gibbs free energy principle Abstract The non-uniformity temperature field of direct solar thermochemical reactors severely decreases the energy conversion efficiency of solar-to-fuel. Inspired by the physical mechanism by which the human ear can collect more sound waves, associating the similarity …

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Published at Applied Energy – A novel high-efficiency solar thermochemical cycle for fuel production based on chemical-looping cycle oxygen removal

A novel high-efficiency solar thermochemical cycle for fuel production based on chemical-looping cycle oxygen removal Abstract Solar-driven two-step thermochemical cycling is a promising means to convert solar energy into storable and transportable chemical fuel, in which hydrogen or carbon monoxide is generated by continuous reduction and oxidation reactions. However, the high energy consumption of deoxygenation …

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Methane pyrolysis with liquid metals in a bubble column reactor to generate green hydrogen and carbon

Methane Pyrolysis in a Liquid Metal Bubble Column Reactor Using a bubble column reactor at Karlsruher Institut für Technologie, the Liquid Metal Laboratory team is working on producing hydrogen from methane, the cheapest method, but without CO2 emissions – the problem with the cheapest method. The main product, besides hydrogen, is carbon, which, like green …

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Published at Solar Energy – The cost-saving potential of next-generation particle technology CSP with steam cycles

Abstract: The cost-saving potential of next-generation concentrating solar power plants based on particle technology with steam cycles is assessed. Techno-economic models were created to optimize three systems with different steam cycles, ranging from state of the art to future development, for levelized cost of electricity and to compare them to a state-of-the-art molten salt tower …

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Published at Energy Conversion and Management – Thermodynamic and economic analysis of a multi-energy complementary distributed CCHP system coupled with solar thermochemistry and active energy storage regulation process

Abstract: The combination of distributed energy systems (DES) and solar energy is considered a vital measure to save the usage of fossil energy. A new distributed combined cooling, heating and power (CCHP) system integrated with solar thermochemistry (STC) and energy storage (ES) units is proposed. The methane steam reforming (MSR) reaction is driven by solar …

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Published at Next Energy – Direct solar-driven thermochemical CO2-to-fuel conversion with efficiency over 39 % employing hierarchical triply periodic minimal surfaces biomimetic foam reactors

Abstract: Solar-driven CO2 reforming of CH4 is considered a promising approach for achieving CO2 emission reduction and clean energy utilization simultaneously. However, reactors suffer from uneven temperature distribution and severe carbon deposition, leading to low solar-to-fuel efficiency. This study introduces a novel strategy for highly efficient solar-driven thermochemical CO2-to-fuel conversion based on hierarchical triply periodic …

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Published at Crystals – Manufacturing and Thermal Shock Resistance of 3D-Printed Porous Black Zirconia for Concentrated Solar Applications

Abstract: A novel approach for manufacturing porous materials, foreseen as solar receivers for concentrated sun radiation, used in the power tower technology is presented. In such applications, materials are subjected to steep thermal gradients and thousands of cycles. Yet, materials consisting of honeycombs and ceramic foams showed insufficient thermal performance. By using the fused filament …

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Published at Chemical Engineering Journal – Green ammonia to Hydrogen: Reduction and oxidation catalytic processes

Ammonia. Computer model of a molecule of ammonia(NH3). Atoms are represented as spheres and are colour coded: nitrogen (blue) and hydrogen (white). Ammonia is a pungent-smelling colourless gas. It occurs naturally in gases from some geothermal springs.  Abstract: Green ammonia, produced at ambient conditions, has received significant attention as a carrier of hydrogen for energy …

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Published at Renewable Energy – Flow and heat transfer analysis of a gas–particle fluidized dense suspension in a tube for CSP applications

Abstract: This work presents a numerical study of the flow of particles in a gas–particle fluidized dense suspension for CSP applications using the Multi-Phase Particle in Cell (MP-PIC) method, implemented in CPFD-Barracuda software. The study covers two different numerical simulations. The first is a cold and isothermal model in which the fluctuations and control of …

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