1. 1 Feb 2024 Journal Article Journal of Engineering for Gas Turbines and Power

    Ceramic and Metal Additive Manufacturing of Monolithic Rotors From SiAlON and Inconel and Comparison of Aerodynamic Performance for 300W Scale Microturbines

    Lukas Badum, Thomas Prochaska, Martin Schwentenwein, Beni Cukurel
    Abstract

    The gas turbine industry is continuously developing and testing new materials and manufacturing methods to improve the performance and durability of hot section components, which are subjected to extreme conditions. SiAlON and Inconel 718 are especially desirable for turbomachinery applications due to their high strength and high-temperature capabilities. To demonstrate

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  2. 1 Feb 2024 Journal Article Journal of Fluids Engineering

    Compression Characteristics of Liquid Ring Compressors With Fixed and Freely Rotating Casings

    Sercan Acarer, M Tayyip Gürbüz, Beni Cukurel
    Abstract

    Liquid ring compressors (LRC) are used for a wide range of compression and vacuum applications, including corrosive or flammable gases for which other compression technologies may not be feasible. The presence of a surrounding liquid ring may offer the possibility of polytropic compression due to incremental heat loss to the liquid. This aspect may play a critical role

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  3. 18 Jan 2024 Journal Article Energy Advances

    Nitrogen-doped hierarchically porous carbons for non-alkaline Zn–air battery cathodes

    Roman R Kapaev, Yair Shahaf, Masato Sonoo, Amit Ohayon, David Eisenberg, Malachi Noked
    Abstract

    Non-alkaline Zn–air batteries (ZABs) attract great attention because they can potentially combine high energy density, safety, and low cost. However, cathodes for non-alkaline ZABs are underdeveloped and suffer from poor charge–discharge kinetics. Here we study N-doped hierarchically porous carbons, which are synthesized using a self-templating approach, as catalytic

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  4. 6 Jan 2024 Journal Article Batteries & Supercaps

    Electrolytes and cathode designs for next generation of silicon-based batteries – Comprehensive experimental and computational considerations

    Alon Epshtein, Igor Baskin, Yair Ein-Eli
    Abstract

    The increasing demand for energy storage technologies has prompted the exploration of side-by-side technologies, that can complement the current Lithium-ion battery industry with cheaper and more abundant materials that can be incorporated in a myriad of new electrochemical cell designs. To meet these goals, a novel approach for electrolyte design using quantum-mechanical

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  5. 5 Jan 2024 Journal Article Polymer

    Emulsion templating of simultaneously-synthesized interpenetrating polymers with degradable components for hierarchical porosities

    Dahiana Mayer, Michael S Silverstein
    Abstract

    Hierarchically porous polymers are of interest for a variety applications including adsorption, catalysis, scaffolds, energy storage, and controlled release. In this work, two simultaneous, mutually exclusive reactions within the external phases of water-in-oil high internal phase emulsions (HIPEs) were used to generate macroporous semi-interpenetrating polymer network

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  6. 3 Jan 2024 Journal Article ACS Applied Energy Materials

    Application of ZrO2-Based Hierarchical Nanofibers as a Promoter in Ni Catalyzed Methane Dry Re-Forming

    Manar Halabi, Omaier Naser-Eldeen, Jin Wang, Leo Giloni, Meirav Mann-Lahav, Gideon S Grader, Oz M Gazit
    Abstract

    In this work, the use of electrospun zirconia nanofibers (NFs), native and doped with 8% mol yttrium, was evaluated for the first time as supports for Ni-based hierarchical catalysts in the dry re-forming of methane (DRM). By a thermal annealing process of the as-made fibers to 500–1000 °C, we induce controlled changes to the NFs structural properties, before the

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  7. 1 Jan 2024 Journal Article Reviews in Aquaculture

    Electrochemical applications in RAS: A review

    Raz Ben-Asher, Youri Gendel, Ori Lahav
    Abstract

    Electrochemical water treatment for recirculating aquaculture systems (RAS) is a promising approach for replacing the biological water treatment methods and establishing a new RAS generation with improved cost-effectiveness, lower environmental footprint, and no start-up periods. On top of ammonia oxidation directly into N2(g), electrochemical oxidation results in

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  8. 1 Jan 2024 Journal Article International Journal of Electrical Power & Energy Systems

    PMU placement for fault line location using neural additive models—A global XAI technique

    Michael Perl, Zhenglong Sun, Ram Machlev, Juri Belikov, Kfir Yehuda Levy, Yoash Levron
    Abstract

    In recent years, machine learning (ML) techniques have shown impressive results in many power system applications, including line fault location using phasor measurement units (PMU). Despite this success, such techniques may be hard to use in real life scenarios, if their results are not well understood by power system experts. In this light, this work proposes to use

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  9. Jan 2024 Journal Article Energy Advances

    Simulations for charge transfer and photocurrent calculations using hematite for green hydrogen production

    Abstract

    Hydrogen is an important material for today's economy and a possible clean fuel. “Blue” and “green” hydrogen production rely on catalysts to either convert carbon monoxide into carbon dioxide via the water–gas shift reaction (WGSR) or generate hydrogen with no carbon involved by water splitting. Hematite is a possible catalyst for both reactions, but some limits prevent

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  10. 29 Dec 2023 Journal Article Advanced Functional Materials

    Integrated Biotic–Abiotic Solar Driven NADPH Regeneration Platform in Escherichia coli for Chemical Biomanufacturing Applications

    Oren Bachar, Matan M Meirovich, Omer Yehezkeli
    Abstract

    The development of a biohybrid bacterium capable of self-synthesizing photocatalytically active quantum dots (QDs) is reported using the expression of a template protein that dictates the QDs size and properties. This biotic–abiotic light-harvesting module is utilized for solar-driven NADPH regeneration within the living bacteria, facilitated by controlled expression

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