Dynamic Model of Simple Electric Generator for Self-Contained and Measuring Electronic Devices

A heat-driven self-cooling system could potentially utilize the heat dissipated from a device to power a thermo-electric generator (TEG) which could then provide power to run a cooling system. In this paper, numerical simulation and parametric analysis of the geometrical parameters (such as fin density and height) and system parameters are conducted to better understand the performance of the self-cooling system within wide ranges. The study showed further decrease in device temperature could be achieved by using shunt operation instead of direct contact between the device and the TEG module. The use of TEG cascades could also help improve the decrease in power generation as a result of shunt arrangement.

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Stirling Power Unit: Impact of a Controlled Displacer Piston on Efficiency and Power Output

ASME/BATH 2015 Symposium on Fluid Power and Motion Control ◽

10.1115/fpmc2015-9609 ◽

2015 ◽

Author(s):

Anna Winkelmann ◽

Eric J. Barth

Keyword(s):

Dynamic Model ◽

Power Unit ◽

Power Output ◽

Dynamic Models ◽

Thermodynamic Cycle ◽

Working Fluid ◽

Electric Generator ◽

Power Extraction ◽

Extraction Unit ◽

Pressure Dynamics

This paper presents the design and dynamic model of a novel “controlled Stirling power unit” with an independently controlled displacer piston. Breaking the coupling traditionally seen in Stirling devices between the power piston and the displacer piston, realized either kinematically or dynamically, allows an additional control degree of freedom that can be used to shape the thermodynamic cycle independent of the load. The device presented combines such a controlled Stirling engine (called a pressurizer) with a power extraction unit. The dynamic models of three different power extraction units are presented. The dynamic model builds on a previous experimentally validated first-principles model of a Stirling pressurizer. The model is a lumped parameter compressible fluid power dynamic model that captures the pressure dynamics of the high pressure helium working fluid as it is affected in time by volume, mass and heat flux changes. The dynamic model of a pressurizer combined with a linear electric generator is used to study different displacer motion profiles with regard to the shape of the thermodynamic cycle, and the effect on the power output and efficiency of the device.

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A study on design and implementation of dynamic location tracking system for locating remote control

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.33.13877 ◽

2018 ◽

Vol 7 (3.3) ◽

pp. 165

Author(s):

Sung Hyun Seo ◽

Kwang Hyun Ro

Keyword(s):

Remote Control ◽

Dynamic Model ◽

Electronic Devices ◽

Location Based Services ◽

Location Information ◽

Home Appliances ◽

Unique Product ◽

Product Number ◽

Remote Controller ◽

Beacon Signal

With the development of IoT technology, there is a growing demand for location based services for checking the mobility and identity of users, and remote controls for remote control of household appliances or electronic devices are used for home appliances or electronic devices there are many functions that are not available.In this case, when the remote controller is lost, there are difficulties in that a large number of home appliances or electronic devices can only be started by a limited operation or can’t operate various operations.Especially, many people are losing a lot of remote control in everyday life, and the problem of wasting a considerable amount of time in finding a remote control is also happening.In order to solve this problem, the present invention proposes a method of opening a remote control search application content, registering a unique product number assigned to the remote control, generating a location notification request signal for requesting the location information of the remote controller, And then displays the captured location or dynamic model detected from the location notification response signal on the basis of the indoor framing for 2D or the indoor framing for 3D, It will be able to quickly and accurately locate the remote control that emits the beacon signal. In other words, in this paper, the application contents for remote controller search are opened to register a unique product number assigned to the remote controller, a location notification request signal for requesting the location information of the remote controller, and a location notification response And then displays the captured spot or dynamic model detected from the signal on the beacon for 2D or the 3D model for 3D.In the future, the research method to be carried out is limited to grasp the object information only by the remote controller (one single article object), but it is difficult to quickly recognize the object information transmitted from various objects having mobility used in the home or work We plan to implement and design an algorithm that optimizes the received signal strength of the BLE beacon so that there is no loss of beacon signal in a room that is subject to better system and multipath effects.

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Atom-probe analysis of the solid-liquid interface

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100139755 ◽

1995 ◽

Vol 53 ◽

pp. 676-677

Author(s):

J.A. Panitz

Keyword(s):

Molecular Level ◽

Selective Adsorption ◽

Electronic Devices ◽

Atom Probe ◽

Chemical Agent ◽

Hostile Environment ◽

Solid Interface ◽

Solid Liquid Interface ◽

Solid Liquid ◽

Chemically Selective

The first few atomic layers of a solid can form a barrier between its interior and an often hostile environment. Although adsorption at the vacuum-solid interface has been studied in great detail, little is known about adsorption at the liquid-solid interface. Adsorption at a liquid-solid interface is of intrinsic interest, and is of technological importance because it provides a way to coat a surface with monolayer or multilayer structures. A pinhole free monolayer (with a reasonable dielectric constant) could lead to the development of nanoscale capacitors with unique characteristics and lithographic resists that surpass the resolution of their conventional counterparts. Chemically selective adsorption is of particular interest because it can be used to passivate a surface from external modification or change the wear and the lubrication properties of a surface to reflect new and useful properties. Immunochemical adsorption could be used to fabricate novel molecular electronic devices or to construct small, “smart”, unobtrusive sensors with the potential to detect a wide variety of preselected species at the molecular level. These might include a particular carcinogen in the environment, a specific type of explosive, a chemical agent, a virus, or even a tumor in the human body.

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Study of dislocation loops in Arsenic-Rich as-grown GaAs

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100126548 ◽

1987 ◽

Vol 45 ◽

pp. 350-351

Author(s):

Byung-Teak Lee

Keyword(s):

Point Defects ◽

Electronic Devices ◽

Arsenic Concentration ◽

Stoichiometric Compound ◽

Dislocation Loops ◽

Gaas Crystal ◽

Ion Milling ◽

Transmission Electron ◽

Arsenic Source ◽

High Arsenic

Grown-in dislocations in GaAs have been a major obstacle in utilizing this material for the potential electronic devices. Although it has been proposed in many reports that supersaturation of point defects can generate dislocation loops in growing crystals and can be a main formation mechanism of grown-in dislocations, there are very few reports on either the observation or the structural analysis of the stoichiometry-generated loops. In this work, dislocation loops in an arsenic-rich GaAs crystal have been studied by transmission electron microscopy.The single crystal with high arsenic concentration was grown using the Horizontal Bridgman method. The arsenic source temperature during the crystal growth was about 630°C whereas 617±1°C is normally believed to be optimum one to grow a stoichiometric compound. Samples with various orientations were prepared either by chemical thinning or ion milling and examined in both a JEOL JEM 200CX and a Siemens Elmiskop 102.

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Short-term volume and turgor regulation in yeast

Essays in Biochemistry ◽

10.1042/bse0450147 ◽

2008 ◽

Vol 45 ◽

pp. 147-160 ◽

Cited By ~ 12

Author(s):

Jörg Schaber ◽

Edda Klipp

Keyword(s):

Dynamic Model ◽

Volume Change ◽

Volume Regulation ◽

Time Course ◽

Osmotic Shock ◽

Intracellular Concentration ◽

Short Term ◽

Hydrodynamic Property ◽

Turgor Regulation ◽

Thermodynamic Framework

Volume is a highly regulated property of cells, because it critically affects intracellular concentration. In the present chapter, we focus on the short-term volume regulation in yeast as a consequence of a shift in extracellular osmotic conditions. We review a basic thermodynamic framework to model volume and solute flows. In addition, we try to select a model for turgor, which is an important hydrodynamic property, especially in walled cells. Finally, we demonstrate the validity of the presented approach by fitting the dynamic model to a time course of volume change upon osmotic shock in yeast.

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