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  • Energy storage inherent in large tidal turbine farms ...

    While wind farms have no inherent storage to supply power in calm conditions, this paper demonstrates that large tidal turbine farms in channels have short-term energy storage. This storage lies in the inertia of the oscillating flow and can be used to exceed the previously published upper limit for power production by currents in a tidal channel, while simultaneously maintaining stronger currents.

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  • 3D printing in dentistry | British Dental Journal

    2015-12-11 · All this means that dentists and dental technicians are becoming well acquainted with, and adept at working with large volumes of digital data. 3D printing offers another form of 'output' device ...

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  • Steam Turbines for Power Generation | GE Steam Power

    2021-7-2 · Introduced in 1930, our welded rotor technology has stood the test of time with no ruptures reported in our large diameter steam turbine rotors – manufactured by welding together separate smaller forgings. This beneficial design allows for: Appropriate forging material selection, based on temperature level at each section of the steam turbine

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  • The application of CAD CAM technology in Dentistry

    essentially allows you to create a two-dimensional and three-dimensional models and their materialization by numerical controlled machines. In order to operate more efficiently, reduce

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  • Numerical modelling and optimization of vertical axis

    2021-6-1 · Results show that VAWTs increase each other’s performance by up to 15%, and this optimal layout was for a turbine spacing of three turbine diameters, an array angle, β, of 60°, and when the rotors were co-rotating. Yet, this layout was at the limit of the scope, and the other results indicated an optimal angle around 75°, hence the augmentations are likely to be higher for layouts in this region.

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  • Dynamic characteristics and control of supercritical ...

    2021-2-1 · Compressed air energy storage (CAES) technology, as a large-scale and environmentally friendly energy storage technology, solves the problems of randomness, intermittency, and volatility of renewable energy through the energy translation between different times (day and season), which is an important way to achieve large-scale utilization of renewable energy .

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  • Trends in Lab Design | WBDG - Whole Building Design

    1998-1-1 · Measurements of pressure distributions, profile losses, and flow deviation were carried out on a planar turbine cascade in incompressible flow to assess the effects of partial roughness coverage of the blade surfaces. Spanwise-oriented bands of roughness were placed at various locations on the suction and pressure surfaces of the blades.

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  • Measurements and Prediction of the Effects of Surface ...

    2021-6-28 · The source and detector lie opposite each other and travel in an arc around the patient, obtaining images serially. Images are taken in slices of a few millimeters each and in three different axes—producing coronal, axial, and sagittal sections. These sections can then be reconstructed to form a three-dimensional image.

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  • Wind Turbine Model - File Exchange - MATLAB Central

    3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the object is created. Each of these layers can be seen as a ...

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  • What is 3D printing? How does a 3D printer work?

    1998-1-1 · The work also suggests that incorporation of the rough wall skin-friction law into a three-dimensional Navier–Stokes code would enable good predictions of roughness effects in three-dimensional situations. ... S. A., and Moustapha, S. H., 1992, “Establishing Two-Dimensional Flow in a Large-Scale Planar Turbine Cascade,” AIAA Paper No. 92 ...

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  • Measurements and Prediction of the Effects of Surface ...

    2001-6-27 · 8 bits or less. Geometry compression is a general space-time trade-off, and offers advantages at every level of the memory/intercon-nect hierarchy: less storage space is needed on disk, less transmis-sion time is needed on networks. CR Categories and …

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  • Geometry Compression - web.cse.ohio-state.edu

    2021-5-28 · Three-feed combustion systems in which fuel gas, oxygen, and diluent ( \hbox {CO}_{2} CO 2 ) are issued into a combustor are key components to realize an oxy-fuel type gas turbine in a zero-emission plant. Yet, simulations of such systems using mixture fraction-based models are difficult, since multiple mixture fractions are required to describe the system. In this study, large-eddy ...

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  • Analysis of a Quasi-Two-Dimensional Flamelet Model

    2021-6-5 · This study proposes a design model for conserving and utilizing energy affordably and intermittently considering the wind rush experienced in the patronage of renewable energy sources for cheaper generation of electricity and the solar energy potential especially in continents of Africa and Asia. Essentially, the global quest for sustainable development across every sector is on the rise ...

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  • Gravitricity based on solar and gravity energy storage

    Taking a hybrid energy storage system (HESS) composed of a battery and an ultracapacitor as the study object, this paper studies the energy management strategy (EMS) and optimization method of the hybrid energy storage system in the energy management and control strategy of a pure electric vehicle (EV) for typical driving cycles. The structure and component model of the HESS are constructed.

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  • Optimization of Hybrid Energy Storage System

    2020-2-16 · 1 INTRODUCTION. Intermittency is a key feature in the integration of most renewable and high efficient technologies to meet the energy needs of our society, 1 specially attending the ecological challenges that we are currently facing. In the case of thermal energy systems, this intermittency comes from the divergence in the energy amount and temporal distribution of the resource availability ...

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  • Dimensional stability of short fibre reinforced flowable ...

    2021-2-25 · Fibre-reinforced dental composites are proven to have superior mechanical properties in comparison with micro/nano/hybrid filled composites. However, the addition of small quantities of short ...

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  • Challenges in moving huge and heavy components

    The EIROS project will develop self-renewing, erosion resistant and anti-icing composite materials for use in extreme environments (high erosion and very low temperature). Potential end user applications are numerous and the initial focus will be on wind turbine blades, aerospace leading edges and cryogenic storage tanks for space applications.

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  • sikemia.com - SiKÉMIA

    2020-2-16 · 1 INTRODUCTION. Intermittency is a key feature in the integration of most renewable and high efficient technologies to meet the energy needs of our society, 1 specially attending the ecological challenges that we are currently facing. In the case of thermal energy systems, this intermittency comes from the divergence in the energy amount and temporal distribution of the resource availability ...

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  • A simple method for the design of thermal energy

    A typical conventional large-scale steam turbine is of axial flow one having three-dimensional static and moving blades mounted on the housing and the rotor, respectively. The working fluid (for ex. water steam), in general, flows axially, so that the physical properties of steam may considerably change on its way to the last stage, thereby ...

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  • Centrifugal reverse flow disk turbine and method to

    The Sci-Hub project supports Open Access movement in science. Research should be published in open access, i.e. be free to read. The Open Access is a new and advanced form of scientific communication, which is going to replace outdated subscription models.

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  • Sci-Hub: removing barriers in the way of science

    2016-11-8 · In this study, the reference design of a counter-rotating type pump-turbine was designed from previous work. 3 The flow rate and rotational speed were established to meet the required total head (2 m) for the pump and turbine modes. The counter-rotating type pump-turbine consisted of a front impeller (rear runner) with five blades and a rear impeller (front runner) with four blades, and it was ...

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  • Simultaneous efficiency improvement of pump and

    2021-6-5 · This study proposes a design model for conserving and utilizing energy affordably and intermittently considering the wind rush experienced in the patronage of renewable energy sources for cheaper generation of electricity and the solar energy potential especially in continents of Africa and Asia. Essentially, the global quest for sustainable development across every sector is on the rise ...

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  • Mesoscale and Microscale Modeling for Wind Energy ...

    2007-3-15 · Please contact [email protected] or call 888-707-5814 (M – Th 9 am – 5:30 pm and F 9 am – 3 pm. ET) , to start a free trial, get pricing information, order a reprint, or post an ...

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  • Pressurized Water Reactor (PWR) Systems

    2020-10-16 · A three-loop Westinghouse plant has three steam generators, three reactor coolant pumps, and a pressurizer. The three-loop units in the United Stat es are Beaver Valley 1 a nd 2, Farley 1 and 2, H. B. Robinson 2, North Anna 1 and 2, Shearon Harris 1, V. C. Summer, Surry 1 and 2, and Turkey Point 3 and 4. Each of these plants has 157 fuel ...

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  • 3. How do CO2 capture technologies work? - GreenFacts

    2021-6-12 · As shown in Section 2, power plants and other large-scale industrial processes are the primary candidates for capture and the main focus of this section. The purpose of CO 2 capture is to produce a concentrated stream of CO 2 at high pressure that can readily be transported to a storage site. Although, in principle, the entire gas stream ...

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  • Challenges in moving huge and heavy components

    2021-5-27 · Rapidia Metal. Velo3D Sapphire. Arcam EBM Spectra L. XJet Carmel 700M. With the ability to manufacture unique and complex structures with high precision, Metal 3D printing is one of the fastest-growing technologies in industries like jewelry, medical, dental, and manufacturing which allows users to create cost-effective metal parts and prototypes.

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  • 2021 The Best Metal 3D Printers Buying Guide - Pick

    2021-6-30 · Making 3D Production Real with Scalable, Modular Factory Solutions. ProX SLS 6100. Production-grade nylon 3D printer delivering best-in-class part quality, fast build times and automated production tools. ProX 800. SLA quality at high throughput to address the broadest range of applications. ProJet MJP 2500/2500 Plus.

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  • The Best Industrial Metal and Plastic 3D Printers I 3D

    2018-10-11 · The pumped hydro energy storage is the most effective way to store large-scale electricity and has been widely used in the world. As the key equipment in the pumped hydro energy storage, it is significant and urgent to improve the performance and operation stability of the pump-turbine. In this study, the effect of runners with and without splitter blade on the performances and inner flow ...

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  • Effects of the Splitter Blade on the Performance of a

    2013-5-31 · To compare traditional plaster casts, digital models and 3D printed copies of dental plaster casts based on various criteria. To determine whether 3D printed copies obtained using open source system RepRap can replace traditional plaster casts in dental practice. To compare and contrast the qualities of two possible 3D printing options – open source system RepRap and commercially …

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  • Possibility of reconstruction of dental plaster cast

    2021-7-1 · Protect Tanks from Overpressure and Vacuum. This article is based on a presentation at the 2019 AIChE Spring Meeting and 15th Global Congress on Process Safety, New Orleans, LA. Low pressure does not mean low risk. If low-pressure tanks are compromised, they can release large volumes of material to the environment.

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  • Protect Tanks from Overpressure and Vacuum | AIChE

    2007-3-15 · Please contact [email protected] or call 888-707-5814 (M – Th 9 am – 5:30 pm and F 9 am – 3 pm. ET) , to start a free trial, get pricing information, order a reprint, or post an ...

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  • Practical guidelines for determining electrical area ...

    The fact is, drawer storage cabinets are much better at making full use of your available cubic space than shelves, particularly if you are storing small- to medium-sized items of irregular shape and size. Traditional shelving can work fine for uniform, regularly-shaped items like stackable rectangular boxes, but there’s no flexibility when ...

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  • Cone-Beam CT Diagnostic Applications: Caries,

    2019-8-15 · The technology of CBCT is described elsewhere in this issue of Dental Clinics and will not be repeated in detail here. It suffices to say that CBCT is a new application of CT that generates three-dimensional (3D) data at lower cost and absorbed doses than conventional CT found in the practice of medical radiology.

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  • Pressurized Water Reactor (PWR) Systems

    2020-10-16 · A three-loop Westinghouse plant has three steam generators, three reactor coolant pumps, and a pressurizer. The three-loop units in the United Stat es are Beaver Valley 1 a nd 2, Farley 1 and 2, H. B. Robinson 2, North Anna 1 and 2, Shearon Harris 1, V. C. Summer, Surry 1 and 2, and Turkey Point 3 and 4. Each of these plants has 157 fuel ...

    Get Price
  • About Arcam | GE Additive

    2021-6-30 · Making 3D Production Real with Scalable, Modular Factory Solutions. ProX SLS 6100. Production-grade nylon 3D printer delivering best-in-class part quality, fast build times and automated production tools. ProX 800. SLA quality at high throughput to address the broadest range of applications. ProJet MJP 2500/2500 Plus.

    Get Price
  • The Best Industrial Metal and Plastic 3D Printers I 3D

    Apparatus incorporating a movable dispensing head provided with a supply of material which solidifies at a predetermined temperature, and a base member, which are moved relative to each other along 'X,' 'Y,' and 'Z' axes in a predetermined pattern to create three-dimensional objects by building up material discharged from the dispensing head onto the base member at a controlled rate.

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  • US5121329A - Apparatus and method for creating

    2021-7-1 · Protect Tanks from Overpressure and Vacuum. This article is based on a presentation at the 2019 AIChE Spring Meeting and 15th Global Congress on Process Safety, New Orleans, LA. Low pressure does not mean low risk. If low-pressure tanks are compromised, they can release large volumes of material to the environment.

    Get Price
  • Protect Tanks from Overpressure and Vacuum | AIChE

    2013-5-31 · To compare traditional plaster casts, digital models and 3D printed copies of dental plaster casts based on various criteria. To determine whether 3D printed copies obtained using open source system RepRap can replace traditional plaster casts in dental practice. To compare and contrast the qualities of two possible 3D printing options – open source system RepRap and commercially …

    Get Price
  • Possibility of reconstruction of dental plaster cast

    2013-4-10 · Howell et al. provided three-dimensional CFD model based on RNG k-ε turbulence model , and the effects of turbine solidity, roughness, and tip vortices were considered. Numerical investigations on flow curvature effects were conducted by Coiro et al. [ 20 ], and he argued the difference between DMS model and VAT-VOR3D code.

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  • Aerodynamic Performance Prediction of Straight

    2020-11-26 · In this work, we use LES to study the wake behind a wind turbine. This type of computational approach solves in a direct way the large-scale turbulent structures, with shape and wavelength depending on the geometry of the problem, that contain a large part of the energy of the flow, whereas smaller-scale turbulent fluctuations, which do not depend on the geometry of the considered …

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