electromagnetic energy storage and hydraulic oscillator
Analysing thermal-hydraulic performance and energy
In this research, the novel approach of the electromagnetic vibration (EMV) method was utilized for the first time to increase heat transfer in a double-tube heat exchanger (DTHEX). In this method, a magnetic turbulator (comprising a magnet and an oscillator) was installed inside a central tube that vibrated using an AC magnetic field.
Read More14.6: Oscillations in an LC Circuit
The current, in turn, creates a magnetic field in the inductor. The net effect of this process is a transfer of energy from the capacitor, with its diminishing electric field, to the inductor, with its increasing magnetic field. Figure (PageIndex{1}): (a–d) The oscillation of charge storage with changing directions of current in an LC ...
Read More[1411.1857] Electromagnetic energy storage and power …
The processes of storage and dissipation of electromagnetic energy in nanostructures depend on both the material properties and the geometry. In this paper, the distributions of local energy density and power dissipation in nanogratings are investigated using the rigorous coupled-wave analysis. It is demonstrated that the enhancement of …
Read MoreA Combined Method of Seismic Monitoring and Transient Electromagnetic …
In order to mitigate the risk of roof-dominated coal burst in underground coal mining, horizontal long borehole staged hydraulic fracturing technology has been prevailingly employed to facilitate the weakening treatment of the hard roof in advance. Such weakening effect, however, can hardly be evaluated, which leads to a lack of a basis in …
Read MoreHydroelastic response and electromagnetic energy harvesting of …
The maximum mechanical power reached 2.7 folds of that achieved by the isolated diamond cylinder. The present study concentrates on the hydroelastic response and electromagnetic energy harvesting performance of the square oscillator in the wake of a free upstream square. Different spacings of 4D, 6D, 8D, and 11D are investigated. A …
Read MoreHydraulic system based energy harvesting method from …
In contrast, it is simple for a hydraulic system because change only takes place between mechanical and hydraulic energy. Moreover, hydraulic energy storage is much easier and directly. So it is expected to achieve high efficiency energy harvesting by converting human walking induced mechanical energy into hydraulic energy.
Read MoreModelling and control of oscillating-body wave energy converters …
Oscillating bodies constitute a major class of wave energy converters, especially for offshore deployment general, such converters use as power take-off system either a hydraulic system (high-head water turbine or high-pressure-oil hydraulic motor) or a directly driven linear electric generator. The paper addresses the former case, …
Read MoreElectromagnetic energy storage and power dissipation in …
Knowledge of the local electromagnetic energy storage and power dissipation is very important to the understanding of light-matter interactions and hence may facilitate …
Read MoreResearch on the influence factors of hydraulic oscillator on drag ...
In recent years, hydraulic oscillator devices have been widely used in horizontal well drag reduction ().The hydraulic oscillator uses the pulse pressure to generate axial oscillation force, which works in combination with the bottom drilling tool, which can improve the friction conditions between the drilling string and the rock of the …
Read MoreHydraulic Oscillation Analysis of the Hydropower Station with an …
The concept of hydraulic impedance is widely used for periodic or oscillating flow scenarios in applied hydraulic transients. This paper proposes an equivalent circuit-based discrete hydraulic impedance model for the hydraulic system of the power station. The equivalent hydraulic circuit is established by an analogy between the water …
Read MoreBroadband piezoelectric power generation on high-energy …
One way of implementing the magnetoelastic structure for electromagnetic energy harvesting is shown in Fig. 18 b. Extraction of electromagnetic power requires a relative motion between a magnet and a coil due to Faraday''s law (e.g. moving magnet and stationary coil or moving coil and stationary magnet [1]).
Read MoreElectromagnetic energy harvesting using magnetic levitation ...
This paper proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) with frequency-up conversion (FUC) mechanisms toward harvesting low-frequency-low-intensity, and wideband vibrational energy. The PEHEH consists of a stator with embedded coils, an eccentric rotor embedded with permanent magnets, and a fan …
Read MoreDesign optimization of hydraulic energy storage and
This paper focuses on the design optimization of a Hydraulic Energy Storage and Conversion (HESC) system for WECs. The structure of the HESC system …
Read MoreAn electromagnetically actuated high frequency oscillation pump
1. Introduction1.1. Efficient, low power hydraulic power supply – need and state of the art. The authors'' original motivation to research oscillation pumps was a statement of an industrial engineer given in a fluid power conference [1], concerning the need for a very compact actuator unit in the low power range.Hydraulic actuation is still …
Read MoreA Review on Electromagnetic and Chemical Energy Storage …
The paper analyses electromagnetic and chemical energy storage systems and its applications for consideration of likely problems in the future for the development …
Read MoreEnergy-based high frequency oscillation control of linear drives
Besides high-precision positioning tasks and switching operations, electromagnetic actuators realizing free periodic motions provide an application field …
Read MoreMultiple independent autonomous hydraulic oscillators driven …
Here, Kim et al sign a gravity-driven microfluidic oscillator that realizes time-independent self-switching events across multiple parallel sub-circuits.
Read MoreTechnologies for energy storage. Flywheels and super …
The mechanics of energy storage in a flywheel system are common to both steel- and composite-rotor flywheels. Superconducting magnetic energy storage (SMES) is an energy storage device that stores ...
Read MoreA Light-Induced Microwave Oscillator
decay time that measures the energy storage ability of the resonator and f is the resonant frequency. High-Q resonators used for stabilization of the electronic oscillator include mechanical resonators, such as quartz crystals [7,8]; electromagnetic resonators, such as dielectric cavities [9]; and acoustic [10] and
Read MoreElectromagnetic energy storage and power dissipation in …
Equation (11) relies only on the value and the first-order derivative of permittivity of individual. oscillators at a specific frequency. If the permittivity and its first-order derivative can be described by. a few oscillators in a spectral range with good accuracy, then the energy density can be calculated.
Read MoreTesting and performance analysis of an integrated electromagnetic …
1. Introduction. Eddy current retarders (ECBs) and hydraulic retarders (HRs) are commonly used to slowdown heavy vehicles (Zheng et al., 2016; Ye et al., 2019a), during non-emergency conditions.They can effectively reduce the required braking strength and frequency of operation of the traditional mechanical braking systems (Zheng …
Read MoreDesign and optimization of a maglev electromagnetic–triboelectric ...
A novel integrated power unit realizes both energy harvesting and energy storage by a textile triboelectric nanogenerator (TENG)-cloth and a flexible lithium-ion battery (LIB) …
Read MoreRecent advances in correlation and integration between ...
Figure 2 shows the basic principles of typical nonlinear QZS isolators. In Fig. 2, the nonlinearity of the vibrator is mainly caused by the movement of the springs gure 2a shows the smooth and discontinuous (SD) oscillator proposed by Cao et al. [74,75,76].The SD oscillator is widely used in physics and engineering to describe …
Read MoreElectromagnetic energy storage and power dissipation in …
Knowledge of the local electromagnetic energy storage and power dissipation is very important ... The energy stored by the Lorentz oscillator is the sum of the kinetic energy and the potential energy. Alternatively, Eq. (5) can …
Read MoreHydroelastic response and electromagnetic energy harvesting of …
Research confirmed that the nonlinear oscillator can harvest energy from a stochastic excitation modeled by a generic wide spectrum, and overcome the most …
Read MoreA review of energy storage types, applications and
This paper reviews energy storage types, focusing on operating principles and technological factors. In addition, a critical analysis of the various energy storage types is provided by reviewing and comparing the applications (Section 3) and technical and economic specifications of energy storage technologies (Section 4) novative energy …
Read MoreSensors | Free Full-Text | Performance of An Electromagnetic Energy ...
The introduction of nonlinearities into energy harvesting in order to improve the performance of linear harvesters has attracted a lot of research attention recently. The potential benefits of nonlinear harvesters have been evaluated under sinusoidal or random excitation. In this paper, the performances of electromagnetic …
Read MoreStructural design and effect analysis on a new type of …
A new hydraulic oscillator was designed, which was able to adjust pressure uctuations through two sets of dynamic and xed valves. Hydraulic oscillators can meet the...
Read MoreElectromagnetic energy storage and power dissipation in
3.2 Energy storage in materials described by a Lorentz oscillator model For ideal dielectrics, the formulae for calculating time-averaged electric and magnetic energy J. Quant. Spectrosc.
Read More[PDF] Electromagnetic energy storage and power dissipation in ...
DOI: 10.1016/j.jqsrt.2014.09.011 Corpus ID: 119253214; Electromagnetic energy storage and power dissipation in nanostructures @article{Zhao2014ElectromagneticES, title={Electromagnetic energy storage and power dissipation in nanostructures}, author={Junming Zhao and Junming Zhao and Zhuomin …
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