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  • MDPI - Multidisciplinary Digital Publishing Institute  (39)
  • Elsevier  (6)
  • Wiley-Blackwell  (6)
  • Blackwell Science Ltd  (1)
  • 1
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    Paleontology in the 21st Century (2023)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2023-08-08
    Description: This Special Issue highlights fundamental changes to the questions that we can ask about both the recent past and deep time. Delve into the forefront of paleontological research with this Special Issue reprint. Renowned paleontologists from around the world share groundbreaking insights into ancient life on Earth. Discover the latest advances in fossil discovery, analytical techniques, interdisciplinary collaborations, and technological innovations that are shaping our understanding of evolution and the Earth's history. This collection of cutting-edge research is a must-read for scientists, researchers, and enthusiasts interested in the dynamic field of paleontology in the modern era.
    Keywords: REE ; Tyrannosaurus rex ; molecular paleontology ; geochemical taphonomy ; diagenesis ; bone ; protein ; collagen ; Hell Creek Formation ; cuticle ; Eocene ; Fur Formation ; insects ; melanin ; mo-clay ; pigment ; Stolleklint Clay ; structural coloration ; Ølst Formation ; fossil ; dinosaur ; paleoproteomics ; porphyrin ; keratin ; feather ; taphonomy ; degradation ; microbes ; CO2 ; apatite ; paleontology ; China ; history ; 20th century ; 21th century ; paleobiology ; history and philosophy of paleontology ; twenty-first-century paleontology ; paleobiological revolution ; technoscience and global issues ; fossil proteins ; rare earth elements ; soft-tissue preservation ; geochemistry ; soft tissues ; molecular preservation ; Hornerstown Formation ; shallow marine ; glauconite ; hybridization ; introgression ; ancient DNA (aDNA) ; hominin paleontology ; paleoanthropology ; Brachylophosaurus ; Judith River Formation ; ELISA ; RIA ; Venta Micena site ; VM-0 ; VM-1960 ; taxonomy ; morphometrics ; phylogeny ; evolution ; morphological clock ; molecular clock ; biodiversity ; palaeobiogeography ; macroevolution ; primates ; Cercopithecidae ; monkeys ; genotype:phenotype mapping ; dentition ; Equidae ; Equinae ; hipparionini ; protohippini ; equini ; paleoecology ; paleoclimatology ; biochronology ; steroids ; diet ; coprolites ; Gryphaea dilatata ; crystallographic texture ; pole figures ; neutron diffraction ; recrystallization ; thick-walled shells ; molecular taphonomy ; fossils ; preservation ; mass spectrometry ; dinosaurs ; Neanderthal ; Combe-Grenal ; juvenile ; mandible ; periodontitis ; tooth ; tartar ; SEM analysis ; n/a ; terrestrialization ; artrhopods ; Cambrian explosion ; molecular clocks ; palaeontology ; phylogenomics ; teeth ; enamel ; microanalysis ; Purussaurus ; Neoepiblema ; miocene ; ICP-MS ; MEV ; microscopy ; magnetic resonance imaging ; micro-computed tomography ; radiocarbon dating ; DNA barcoding ; synchrotron ; bone remodeling ; elemental analysis ; diagenetic alteration ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences
    Language: English
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  • 2
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    Towards Greenhouse Gas Mitigation: Novelty in Heterogeneous Catalysis (2022)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2024-04-11
    Description: This book has focused on novel developments and advancements in the field of heterogeneous catalysis with the aim of greenhouse gas reduction. The book determines whether carbon dioxide is a crisis or an opportunity, as well as its conversion into useful products such as synthesis gas. Moreover, the selective catalytic removal of nitrogen oxides is also presented.
    Keywords: Al2O3 ; CO2 reforming ; La2O3 ; CH4 ; ZrO2 ; perovskites ; strontium ; cerium ; hydrogen ; sintering ; carbon deposition ; BiF3 nanostructure ; POP composite ; photocatalyst ; Rz ink ; CO2 ; stability ; H-ZSM-5 ; greenhouse gas reduction ; CeO2 ; MgO ; dry reforming ; heterogeneous catalysis ; in situ XRD ; carbon dioxide (CO2) ; carbon monoxide (CO) ; CO2 feedstock ; methanation ; catalyst ; catalysis ; photocatalysis ; Power-to-Gas ; catalyst design ; heterogenous catalysts database ; ceramic foams ; ZnO nanorods ; TiO2 nanorods ; NOx mitigation (deNOx) ; environmental nanocatalysis ; selective catalytic reduction SCR ; W and V catalytic sites ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering
    Language: English
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  • 3
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    Economic and Policy Challenges of the Energy Transition in CEE Countries (2022)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2022-05-06
    Description: With the announcement of the European Green Deal, which defines a set of policy initiatives aimed at achieving a 50–55% reduction in carbon emissions by 2030 and making Europe climate neutral in 2050, the challenge of energy transition becomes even more critical. The transformation of national energy systems towards sustainability is progressing throughout all Central and Eastern European (CEE) countries, yet the goals and results are different. Most EU Member States have made substantial progress towards meeting their long-term commitments of emissions reductions. However, some bloc members have struggled to meet their obligations. An effective energy transition requires the introduction of appropriately designed policy instruments and of robust economic analyses that ensure the best possible outcomes at the lowest costs for society. In this context, this Special Issue aims to bring into the discussion the challenges that CEE countries have to face and overcome while undergoing energy transition.
    Keywords: climate change ; food security ; grand challenges ; multiple factor analysis ; regional studies ; renewable energy ; sustainable development goals ; support systems ; energy policy ; cogeneration ; capacity market ; individual cogeneration premium ; trade globalization ; financial globalization ; CO2 emissions ; real GDP per capita ; bootstrap panel Granger causality ; EU transition economies ; photovoltaics ; renewable energy sources ; “My Electricity” ; renewable energy policy ; Poland ; “Mój Prąd” ; grant ; renewable energy grants ; renewable energy support ; economic appraisal ; social discount rate ; Ramsey formula ; consumption rate of interest ; social opportunity cost ; renewable energy sources (RES) ; green energy transformation ; sustainable development ; energy cooperatives ; coopetition ; Renewable Energy Communities ; management ; households ; energy consumption ; platform ; EU ETS ; CO2 ; emissions trading ; energy companies from Central and Eastern Europe ; decarbonisation ; energy transition ; low-carbon technology ; climate and energy policy ; indicators ; biomass ; electric vehicle ; electromobility ; energy balance ; efficiency engines ; clustering ; charging stations ; data analysis ; hydrogen cells ; energy law ; customer preferences ; electric car ; PHEV ; driving technique ; limestone sorbents ; flue gas desulphurisation ; FGD gypsum ; coal-fired power plants ; climate policy ; capacity adequacy ; linear programming ; COVID-19 pandemic ; lockdown ; electricity demand profiles ; Polish energy mix ; energy transition in Poland ; social acceptance ; carbon emissions ; fleet electrification ; sustainable mobility ; fleet management ; energy mix ; onshore wind ; risk assessment ; cash-flows ; discount rate ; cost of capital ; cost of equity ; district heating ; decarbonization ; energy efficiency ; Hubgrade ; remuneration mechanism ; power generation ; new investments ; combined heat and power ; optimization ; thermal energy storage ; uncertainty ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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  • 4
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    Geothermal Energy Utilization and Technologies 2020 (2022)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2022-02-01
    Description: Rising pollution, climate change and the depletion of fossil fuels are leading many countries to focus on renewable-based energy conversion systems. In particular, recently introduced energy policies are giving high priority to increasing the use of renewable energy sources, the improvement of energy systems’ security, the minimization of greenhouse gas effect, and social and economic cohesion. Renewable energies’ availability varies during the day and the seasons and so their use must be accurately predicted in conjunction with the management strategies based on load shifting and energy storage. Thus, in order to reduce the criticalities of this uncertainty, the exploitation of more flexible and stable renewable energies, such as the geothermal one, is necessary. Geothermal energy is an abundant renewable source with significant potential in direct use applications, such as in district heating systems, in indirect use ones to produce electricity, and in cogeneration and polygeneration systems for the combined production of power, heating, and cooling energy. This Special Issue includes geothermal energy utilization and the technologies used for its exploitation considering both the direct and indirect use applications.
    Keywords: geothermal power production ; abandoned oil reservoirs ; in situ combustion ; organic Rankine cycle (ORC) ; plunger pump ; centrifugal pump ; pressure drop ; temperature utilization rate ; system generating efficiency ; carbonate geothermal reservoirs ; sustainable geothermal energy exploitation ; southern Italy ; numerical simulation ; dual-loop ORC ; mixture working fluids ; entropy generation ; entransy loss ; exergy loss ; Ground source heat pump ; oval cross-section ; groundwater ; borehole heat exchanger ; CFD ; Sandtank ; granite ; physical characteristics ; cyclic ; thermal treatment ; water cooling ; hybrid renewable polygeneration plant ; micro organic Rankine cycle ; evacuated solar thermal collectors ; photovoltaic panels ; plastic heat exchanger ; Organic Rankine Cycle ; geothermal energy ; shell and tube heat exchanger ; fouling resistance ; mobile thermal energy storage (M-TES) ; phase change material (PCM) ; LCOH ; heat transport ; renewable energy source ; household hybrid system ; dynamic simulation ; economic analysis ; TRNSYS software ; heating and cooling network ; polygeneration system ; geothermal energy community ; ORC ; energy district ; heat pump ; R1234ze ; CO2 ; geothermal ; renewable energy ; historic building ; energy saving ; earth-to-air ; horizontal pipe ; 2D model ; air conditioning ; renewable energy sources ; thermal performances ; energy efficiency ; parametric study ; geothermal resource ; Monte Carlo simulation ; assessment ; thermal reservoir ; North Jiangsu Basin ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
    Language: English
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  • 5
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    Forecasting CO2 Sequestration with Enhanced Oil Recovery (2023)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2023-01-05
    Description: The aim of carbon capture, utilization, and storage (CCUS) is to reduce the amount of CO2 released into the atmosphere and to mitigate its effects on climate change. Over the years, naturally occurring CO2 sources have been utilized in enhanced oil recovery (EOR) projects in the United States. This has presented an opportunity to supplement and gradually replace the high demand for natural CO2 sources with anthropogenic sources. There also exist incentives for operators to become involved in the storage of anthropogenic CO2 within partially depleted reservoirs, in addition to the incremental production oil revenues. These incentives include a wider availability of anthropogenic sources, the reduction of emissions to meet regulatory requirements, tax incentives in some jurisdictions, and favorable public relations. The United States Department of Energy has sponsored several Regional Carbon Sequestration Partnerships (RCSPs) through its Carbon Storage program which have conducted field demonstrations for both EOR and saline aquifer storage. Various research efforts have been made in the area of reservoir characterization, monitoring, verification and accounting, simulation, and risk assessment to ascertain long-term storage potential within the subject storage complex. This book is a collection of lessons learned through the RCSP program within the Southwest Region of the United States. The scope of the book includes site characterization, storage modeling, monitoring verification reporting (MRV), risk assessment and international case studies.
    Keywords: geologic CO2 sequestration ; CO2 and brine leakage ; underground source of drinking water ; risk assessment ; response surface methodology ; early detection criteria ; multi-objective optimization ; CO2-WAG ; machine learning ; numerical modeling ; hybrid workflows ; morrow ; Farnsworth ; Anadarko ; incised valley ; geological carbon sequestration ; reactive surface area ; mineral trapping ; enhanced oil recovery with CO2 (CO2-EOR) ; geochemical reactions ; workflow ; workshop ; process influence diagram ; response surface model ; polynomial chaos expansion ; NRAP ; relative permeability ; geologic carbon storage ; multi-phase flow simulation ; life cycle analysis ; CO2-enhanced oil recovery ; anthropogenic CO2 ; global warming potential ; greenhouse gas (GHG) ; carbon storage ; CO2-EOR ; CO2 sequestration ; geomechanics ; reservoir fluid flow modelling ; tightness of caprock ; CO2 leakage ; threshold pressure ; reactive solute transport ; multi-phase fluid flow ; Farnsworth Unit ; STOMP ; GEM ; TOUGHREACT ; 4D ; time lapse ; CO2 ; EOR ; WAG ; sequestration ; monitoring ; carbon sequestration ; caprock integrity ; noble gas migration ; seal by-pass ; carbon dioxide storage ; storage efficiency factor ; probabilistic ; expectation curve ; Monte Carlo ; Farnsworth Field ; petroleum system modeling ; CO2 migration ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
    Language: English
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    Empowering Communities, Beyond Energy Scarcity BIWAES 2021 Biennial International Workshop Advances in Energy Studies (2022)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2022-08-12
    Description: This book focuses on the much-needed efforts to design sustainable, well-being-oriented economies, based on appropriate energy use in all sectors of a country´s development. Carbon neutrality, energy efficiency and effectiveness, renewable energies, circular economy strategies, environmental consequences of energy use, engagement and empowerment of local communities in decision making, energy and environmental impacts of consumer behavior, and finally science-based approaches towards sustainable production and consumption are the main focus of the research activities described within this book. An effort to go beyond energy scarcity, to promote energy communities, to explore new technologies, and overall, to understand and address the population-lifestyle-energy nexus towards increased and shared well-being is the final result jointly provided by the book authors. All in all, the aim is for the book to be the starting point of a deeper research and understanding of the importance of a radical improvement in energy use in society, beyond considering energy as just a resource in the world market. Circular economy aspects are also investigated, showing the energy saving potential associated with the appropriate design and recovery of material resources.
    Keywords: energy consumption for heating ; CO2 emissions ; income ; buildings ; cities ; Spain ; emissions ; CO2 ; GWP ; functional unit ; natural gas ; SOFC ; optimal layout ; wake effect ; fluctuation ; wind farm ; ramping rate ; energy policy investments ; cost-benefit analysis ; social discount rate ; dual discounting ; energy transition index ; energy consumer ; behavioural model ; consumer segmentation ; socioeconomic characteristics ; end user profile ; energy awareness ; electricity ; efficiency ; multifractal detrended fluctuation analysis ; multifractality ; MLM ; rolling window ; smart grids ; demand response ; island communities ; social acceptance ; technology readiness ; sustainability ; Italy ; Ireland ; multi-regional input–output ; nexus ; trade ; Belt and Road ; renewable energy ; potential ; Indonesia ; literature review ; 100% renewables ; scenario ; energy savings ; circular economy ; construction and demolition waste ; recycled aggregates ; agri-food by-products ; urban building energy model ; UBEM ; level of detail ; LOD ; shadowing ; thermal zoning ; s-LCA ; LCA ; energy communities ; empowerment ; energy justice ; resource sustainability ; exergy ; exergy cost accounting ; exergy cost of biological resources ; decarbonisation ; climate neutrality ; industrial energy saving ; strategic decision making ; net-zero ; road mapping ; energy efficiency ; ideal mix ; sustainability strategy ; energy efficiency index ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
    Language: English
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    Sustainable Development of Energy, Water and Environment Systems (SDEWES 2022) (2024)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2024-04-11
    Description: Implementing sustainable development is central to achieving global reductions in greenhouse gas emissions and mitigating anthropogenic environmental impacts. As defined by the UN 2030 Agenda and its associated Sustainable Development Goals (SDGs), sustainable development requires a holistic, interdisciplinary approach, which is not without its challenges. Indeed, studies tracking global progress toward meeting the 2030 SDG targets emphasize the importance of implementing sustainable solutions, with several SDG targets described as 'off track.' Therefore, there is an urgent need to address the challenges of an interdisciplinary, unified, and practical approach to sustainable implementation. In this context, this Reprint brings together 15 selected papers presented during the 2022 SDEWES Conference. These papers cover a broad range of topics, from circular governance models to education related to sustainable practices, as well as the impacts of current legislative frameworks targeting energy efficiency, built environment energy performance, bio-based industrial applications, transport and sustainable energy services, and production, supply, and infrastructure maintenance strategies. This Reprint provides an interdisciplinary and holistic perspective on sustainable development solutions, with several papers highlighting the interrelations between various fields and aspects of sustainability.
    Keywords: combined heat and power ; hospitality ; feasibility ; sensitivity analysis ; simple payback ; energy performance certificate ; CO2 ; multi-apartment buildings ; heating ; energy consumption ; cooling ; performance-based retrofit ; decision support ; building performance simulation ; parametric analysis ; multiple-criteria decision analysis ; residential buildings ; in-line inspection ; smart pig ; sensor ; oil ; natural gas ; pipeline ; environment ; biorefinery ; organosolv ; lignin ; pre-treatment ; higher education ; competencies development ; STEM education ; sustainability ; colloidal particles ; Pickering emulsion ; rheological behaviour ; ESCO business models ; aggregator business models ; energy services for buildings ; energy performance contract ; Pay-for-Performance contract ; energy efficiency in buildings ; demand response ; demand side flexibility ; residential sector ; governance ; circular economy ; circular territories ; index ; circularity ; thermal transmittance ; thermal resistance ; finite element method ; heat flux sensor ; in situ monitoring ; concrete masonry unit ; hydrogen ; water ; wastewater ; electrolysis ; water scarcity ; wastewater treatment plants ; desalination ; Jordan ; system dynamics ; thermal comfort ; Minha Casa Minha Vida ; natural ventilation ; bioclimatic architecture ; social housing ; energy poverty ; battery electric vehicles ; plug-in hybrid electric vehicles ; hybrid electric vehicles ; CO2 emissions ; Hofstede ; advertising ; sustainability integration ; Middle East ; supply chain management ; responsible logistics ; education for SDGs ; natural gas pipelines ; nondestructive testing (NDT) ; in-line inspection robot ; wireless communication ; antenna ; circular waveguide ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology
    Language: English
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  • 8
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    Advances in Polyhydroxyalkanoate (PHA) Production, Volume 3 (2022)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2022-11-17
    Description: Nowadays, we are witnessing highly dynamic research activities related to the intriguing field of biodegradable materials with plastic-like properties. These activities are currently intensified by a strengthened public awareness of prevailing ecological issues connected to growing piles of plastic waste, microplastic formation, and increasing greenhouse gas emissions; this goes hand-in-hand with the ongoing depletion of fossil feedstocks, which are traditionally used to produce full carbon backbone polymers. To a steadily increasing extend, polyhydroxyalkanoate (PHA) biopolyesters, a family of plastic-like materials with versatile material properties, are considered a future-oriented solution for diminishing these concerns. PHA production is based on renewable resources, and occurs in a bio-mediated fashion by the action of living organisms. If accomplished in an optimized way, PHA production and the entire PHA lifecycle are embedded into nature´s closed cycles of carbon. Holistic improvement of PHA production, applicable on an industrially relevant scale, calls for inter alia: consolidated knowledge about the enzymatic and genetic particularities of PHA accumulating organisms, in-depth understanding of the kinetics of the bioprocess, the selection of appropriate inexpensive fermentation feedstocks, tailoring the composition of PHA on the level of the monomeric constituents, optimized biotechnological engineering, and novel strategies for PHA recovery from biomass characterized by minor energy and chemical requirement.
    Keywords: polyhydroxyalkanoate ; PHOU ; water soluble PHA ; network ; tannic acid ; polyhydroxyalkanoates ; PHB ; PAT ; Synechocystis sp. PCC 6714 ; process monitoring ; ultrasound particle manipulation ; Tepidimonas taiwanensis ; grape pomace ; thermophiles ; cheese whey ; acetic acid ; Acetobacter pasteurianus C1 ; Bacillus sp. CYR-1 ; PHA ; biodegradable plastic ; PHBHHx ; CO2 ; Cupriavidus necator ; hydrogen-oxidizing bacterium ; biopolymers ; commercialization ; copolyester ; homopolyester ; polyhydroxybutyrate ; biopolymer ; plasticizer ; ferulic acid ; poly(3-hydroxybutyrate) ; cell retention ; volatile fatty acids ; Bacillus megaterium ; polyhydroxyalkanoates (PHA) ; polyhydroxybutyrate (PHB) ; mixed microbial cultures ; activated sludge ; respiration kinetics ; Monod kinetics ; oxygen mass balance ; hysteresis ; process modelling ; sugar beet molasses ; hydrolysis ; synthesis ; properties of PHA ; cyanobacteria ; habitat conditions ; sampling ; wild types ; single species selection ; purification ; axenic cultures ; growth ; non-phototrophic CO2 assimilation ; Knallgas cultivation ; Chemolithotrophs ; ATEX compliant bioreactor ; dissolved oxygen control ; mcl-PHAs ; scl-PHAs ; polythioester ; 3-hydroxybutyrate ; bioplastic ; alpha-methylated ; rubber-like elasticity ; polyhydroxyalkanoate (PHA) ; poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (P(HB-co-HV)) ; mixed microbial culture (MMC) ; hypochlorite digestion ; subcritical water (SBW) ; autotrophs ; biopolyesters ; industrialization ; mcl-PHA ; polymer processing ; polymer recovery ; process design ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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    Fundamentals of Enhanced Oil Recovery (2022)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2022-08-12
    Description: For many years, the trend of increasing energy demand has been visible. Despite the search for alternative energy sources, it is estimated that oil and natural gas will be the main source of energy in transport for the next several dozen years. However, the reserves of renewable raw materials are limited in volume. Along with the degree of depletion, oil recovery becomes more and more difficult, even though the deposits are not yet completely empty. Therefore, it is essential to find new methods to increase oil and gas recovery. Actions aimed at intensifying oil recovery are very rational use of energy that has not yet been fully used. Usually, an increase in oil recovery can be achieved by using extraction intensification methods. However, measures to increase oil recovery can be implemented and carried out at any stage of the borehole implementation. Starting from the well design stage, through drilling and ending with the exploitation of oil and gas. Therefore, in order to further disseminate technologies and methods related to increasing oil recovery, a special edition has been developed, entitled "Fundamentals of Enhanced Oil Recovery". This Special Issue mainly covers original research and studies on the above-mentioned topics, including, but not limited to, improving the efficiency of oil recovery, improving the correct selection of drilling fluids, secondary methods of intensifying production and appropriate energy management in the oil industry.
    Keywords: gas migration ; well cementing ; cement slurry ; cement sheath ; corrosion resistance ; gas outflows ; oil-based mud ; invert drilling fluid ; water phase ; oil phase ; emulsion stability ; emulsifier ; drilling mud ; oxidants ; enzymes ; filter cake ; improving the sealing of the borehole ; rational selection of drilling fluids ; cleaning the borehole ; adhesion ; spacer fluid ; CO2 and H2S geological sequestration ; acid gas reinjection ; acid gas migration ; bottomhole sampling ; isotopic composition ; gas and water chemical analysis ; soil gas analysis ; leakage risk analysis ; improved borehole sealing ; nanosilica ; cement stone ; mechanical parameters ; drilling fluids ; wash ; mud cake ; annular space ; borehole cleaning ; cementing ; wash contact time ; high temperature on corrosion of mining pipes ; water ; aggressive natural gas components ; L80-1 steel ; water shut-off treatment ; gas production ; water-gas ratio (WGR) ; formation permeability ; well logging data quality and quantity interpretation ; gas well ranking ; water flooding ; pore scale ; enhanced oil recovery ; viscosity ; capillarity ; jet pump ; oil ; well ; sucker-rod pump ; gas-water-oil mixture ; chrome coating ; unconventional resources ; shale gas ; oil gas ; total organic carbon (TOC) ; cluster analysis ; genetic type of kerogen ; WAG ; carbonate reservoir ; CO2 ; acid gas ; high-nitrogen natural gas ; water alternating gas ; EOR ; recovery factor ; genetic programming ; fine-grained material ; borehole sealing efficiency ; technological parameters ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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    Environmental Compatible Circuit Breaker Technologies (2022)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2022-02-01
    Description: Recent research and development in the field of high-current circuit breaker technology are devoted to meeting two challenges: the environmental compatibility and new demands on electrical grids caused by the increasing use of renewable energies. Electric arcs in gases or a vacuum are the key component in the technology at present and will play a key role also in future concepts, e.g., for hybrid and fast switching required for high-voltage direct-current (HVDC) transmission systems. In addition, the replacement of the environmentally harmful SF6 in gas breakers and gas-insulated switchgear is an actual issue. This Special Issue comprises eight peer-reviewed papers, which address recent studies of switching arcs and electrical insulation at high and medium voltage. Three papers consider issues of the replacement of the environmentally harmful SF6 by CO2 in high-voltage gas circuit breakers. One paper deals with fast switching in air with relevance for hybrid fault current limiters and hybrid HVDC interrupters. The other four papers illustrate actual research on vacuum current breakers as an additional option for environmentally compatible switchgear; fundamental studies of the vacuum arc ignition, as well as concepts for the use of vacuum arcs for DC interruption.
    Keywords: vacuum circuit breaker ; double break ; prestrike characteristics ; vacuum interrupter ; prestrike gap ; gaseous breakdown ; SF6 ; CO2 ; surface roughness ; statistical enlargement laws ; vacuum arc ; DC circuit breaker ; current interruption ; magnetic field ; plasma physics ; zero-crossing ; circuit breaker ; switching arc ; optical emission spectroscopy ; ablation ; current zero ; SF6 alternative gases ; PTFE ; optical absorption spectroscopy ; Swan bands ; CuF ; hybrid dc circuit breaker ; vacuum arc commutation ; solid-state switch ; vacuum arc voltage ; air arc plasma ; Thomson actuator ; magnetohydrodynamic simulations ; fast switch ; optical diagnostics ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
    Language: English
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