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This book focuses on the characterization of the physical properties of the Earth’s ionosphere, contributing to unveiling the nature of several processes responsible for a plethora of space weather-related phenomena taking place in a wide range of spatial and temporal scales. This is made possible by the exploitation of a huge amount of high-quality data derived from both remote sensing and in situ facilities such as ionosondes, radars, satellites and Global Navigation Satellite Systems receivers.

Research & information: general --- Geography --- electron temperature --- topside ionosphere --- ESA Swarm satellites --- International Reference Ionosphere model --- Langmuir Probes in-situ data --- Incoherent Scatter Radar data --- GNSS --- GBAS --- ionospheric gradient anomaly --- one class support vector machine --- earthquake --- pre-earthquake anomalies --- swarm satellites --- ionospheric plasma --- deep learning --- physical mechanisms --- τ --- geomagnetic equator --- magnetic storm --- ionosphere --- vertical pulse sounding --- ionosonde --- ionogram --- software-defined radio --- radar imaging --- aspect angle --- field-aligned plasma irregularities --- mid-latitude E region --- norm-constrained Capon --- VHF radar --- plasma turbulence --- ionospheric irregularities --- ionosphere F region --- high latitude --- pressure-gradient current --- diamagnetic current --- swarm measurements --- oblique ionogram --- automatic inversion --- electron density profile --- quasi-parabolic segments --- the sporadic E layer --- internal fine structure --- high-resolution ionosphere imaging --- frequency domain interferometry technique --- auroral ionosphere --- E × B plasma motion --- ionospheric scintillation --- GNSS-R --- CYGNSS --- earthquakes --- polar ionosphere --- VIPIR --- Dynasonde --- Jang Bogo Station (JBS) --- Antarctica --- solar eclipse --- precise point positioning --- total electron content --- rate of total electron content index --- Swarm satellite measurements --- electron density --- main ionospheric trough --- high latitude trough --- ring ionospheric trough --- low latitude trough --- auroral diffuse precipitation --- n/a

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This book provides a technical overview of low-cost parabolic trough collector (PTCs) prototypes for low-temperature heat demand. It begins with a comprehensive but concise summary of the state-of-the-art in PTCs, and presents a detailed mathematical model of such systems. Subsequent chapters describe the construction and materials used in the manufacture of PTC prototypes, and offers technical solutions to overcome design problems. Finally, it provides an accessible guide to the standards used to test and evaluate the performance of PTCs. Offering a valuable resource to engineering researchers and practitioners, it is also suitable for students of solar thermal systems, renewable energy and applied physics.

Mechanical Engineering - General --- Mechanical Engineering --- Engineering & Applied Sciences --- Power (Mechanics) --- Parabolic troughs. --- Parabolic trough collectors --- Troughs, Parabolic --- Energy --- Solar collectors --- Mechanics --- Renewable energy sources. --- Engineering. --- Computer aided design. --- Renewable and Green Energy. --- Engineering Thermodynamics, Heat and Mass Transfer. --- Energy Systems. --- Computer-Aided Engineering (CAD, CAE) and Design. --- Mathematical Applications in the Physical Sciences. --- CAD (Computer-aided design) --- Computer-assisted design --- Computer-aided engineering --- Design --- Construction --- Industrial arts --- Technology --- Alternate energy sources --- Alternative energy sources --- Energy sources, Renewable --- Sustainable energy sources --- Power resources --- Renewable natural resources --- Agriculture and energy --- Renewable energy resources. --- Thermodynamics. --- Heat engineering. --- Heat transfer. --- Mass transfer. --- Energy systems. --- Computer-aided engineering. --- Mathematical physics. --- Physical mathematics --- Physics --- CAE --- Engineering --- Mass transport (Physics) --- Thermodynamics --- Transport theory --- Heat transfer --- Thermal transfer --- Transmission of heat --- Energy transfer --- Heat --- Mechanical engineering --- Chemistry, Physical and theoretical --- Dynamics --- Heat-engines --- Quantum theory --- Mathematics --- Data processing

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The increasing share of renewable energy sources is drawing attention to a critical challenge. The availability of wind turbines and photovoltaic solar cells is limited and difficult to predict. They usually provide a fluctuating feed-in to the grid, so energy reserves, e.g., conventional thermal power plants or energy storage systems, are necessary to establish a balance between electricity supply and demand. Various solutions can be adopted to maintain the security of supply and improve the flexibility of the future power system, such as improving the efficiency of technical processes in areas such as thermal power plants, cement and metallurgy industries, the use of advanced thermochemical conversion technologies such as gasification, the expansion of high-voltage transmission infrastructure, the promoting of renewable energy sources, the employment of large-scale energy storage systems, and the use of highly flexible power generation units with carbon capture and utilisation, such as combined-cycle power plants. Given this background, this Special Issue contains fundamental scientific studies on the latest research progress in the development and optimisation of gasification processes, renewable energy source “solar energy”, synthesis of new hybrid nanocomposites and nanofluids, carbon capture, and energy storage systems. Special Issue Editors Falah Alobaid Jochen Ströhle

gasification --- sewage sludge --- syngas --- sulfur --- tar --- ammonia --- biofuel --- synthesis stoichiometry --- operation parameters --- nutrient recovery --- circular economy --- plastics --- waste blends --- thermogravimetric analysis --- pyrolysis --- thermo-economic --- aqua-ammonia --- lithium bromide-water --- absorption systems --- design --- solar collectors --- steam gasification --- biomass --- bubbling fluidized bed --- Aspen Plus simulation --- hydrogen production --- devolatilization --- biomass pretreatments --- wheat straw pellets --- gas yield --- carbon conversion --- fluidized bed --- dynamic simulation --- parabolic trough power plant --- control circuit --- solar field --- thermal storage system --- chemical looping gasification --- carbon dioxide capture --- oxygen carriers --- APROS --- operation strategy --- comparative study --- CO2 capture --- CO2 absorption --- liquid holdup --- pressure drop --- clear liquid height --- froth height --- experimental study --- stand-alone system --- molten salt --- combined cycle plants --- MgO-DW nanofluid --- two-step technique --- co-precipitation --- XRD and SEM --- thermal conductivity --- dynamic viscosity --- nanofluid --- absorption --- improvement --- solvent --- shape memory alloys --- Ni-Ti-Ag --- casting --- VAR furnace --- microstructure --- XRD --- mechanical properties --- hybrid nano-composites --- powder metallurgy --- Fe2O3 --- Ag --- wear --- heat transfer enhancement --- binary basket–twisted strip inserts --- friction characteristics --- thermal performance characteristics --- turbulent flow --- n/a --- binary basket-twisted strip inserts

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The Special Issue presents almost 40 papers on recent research in modeling of pyrometallurgical systems, including physical models, first-principles models, detailed CFD and DEM models as well as statistical models or models based on machine learning. The models cover the whole production chain from raw materials processing through the reduction and conversion unit processes to ladle treatment, casting, and rolling. The papers illustrate how models can be used for shedding light on complex and inaccessible processes characterized by high temperatures and hostile environment, in order to improve process performance, product quality, or yield and to reduce the requirements of virgin raw materials and to suppress harmful emissions.

steelmaking --- oxygen consumption --- GPR --- prediction model --- secondary refining --- water model --- mixing time --- slag entrapment --- stainless steel slag --- heating time --- Cr2O3 --- spinel --- crystal size --- processing maps --- nickel-based alloy --- flow behavior --- arrhenius equation --- hearth --- drainage --- PCA --- analysis tool --- pattern --- tapholes --- blast furnace --- coke --- carbon solution loss --- numerical simulation --- pellet pile --- Discrete Element Method --- porosity distribution --- angle of repose --- coordination number --- bubble motion --- interfacial phenomena --- entrainment --- moving path --- arsenopyrite --- arsenic removal --- mechanism --- roasting --- arsenate --- dust ash --- arsenic recovery --- titanium distribution ratio --- thermodynamic model --- ion–molecule coexistence theory --- LF refining slags --- electric arc furnace --- simulation --- process model --- COREX --- raceway zone --- gas flow --- COREX melter gasifier --- mixed charging --- burden layer structure --- burden pile width --- DEM --- burden distribution --- particle flow --- validation --- tire cord steel --- TiN inclusion --- solidification --- segregation models --- hot rolling --- TOU electricity pricing --- hot rolling planning --- genetic algorithm --- C-H2 smelting reduction furnace --- double-row side nozzles --- dimensional analysis --- multiple linear regression --- ironmaking blast furnace --- coke bed --- trickle flow --- molten slag --- liquid iron --- SPH --- charging system --- mathematical model --- radar data --- main trough --- transient fluid of hot metal and molten slag --- wall shear stress --- conjugate heat transfer --- refractory --- shape rolling --- flat rolling --- wire rod --- temperature distribution --- machine learning --- artificial intelligence --- neural network --- BOS reactor --- copper smelting --- SKS --- Shuikoushan process --- oxygen bottom blown --- gated recurrent unit --- support vector data description --- time sequence prediction --- fault detection and identification --- Lignite --- microwave and ultrasound modification --- structural characterization --- 3D molecular model --- structural simulation --- coke combustion rate --- charcoal combustion rate --- iron ore sintering process --- biomass --- quasi-particle --- quasi-particle structure --- monomer blended fuel --- quasi-particle fuel --- apparent activation energy --- coupling effect --- dynamic model --- basic oxygen furnace --- computational fluid dynamics --- CFD–DEM --- coalescence --- settling --- funneling flow --- horizontal single belt casting process (HSBC) --- computational fluid dynamics (CFD) --- double impingement feeding system --- supersonic coherent jet --- decarburization --- steel refining --- EAF --- CFD --- mass transfer coefficient --- physical modeling --- mathematical modeling --- kinetic models --- natural gas --- fuel injection --- combustion --- RAFT --- roll design --- flat-rolled wire --- strain inhomogeneity --- normal pressure --- macroscopic shear bands --- numerical model --- dual gas injection --- slag eye --- electrical energy consumption --- Electric Arc Furnace --- scrap melting --- statistical modeling --- raceway evolution --- raceway size --- flow pattern --- Eulerian multiphase flow --- blast furnace hearth --- dead man --- iron and slag flow --- lining wear --- hearth drainage --- Industry 4.0 --- copper smelter --- nickel-copper smelter --- radiometric sensors --- Peirce-smith converting --- matte-slag chemistry --- discrete event simulation --- adaptive finite differences --- n/a --- ion-molecule coexistence theory --- CFD-DEM