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design of a Prototype EHd Air Pump for Electronic Chip Cooling Applications

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Plasma Science and Technology 2014年第5期16卷 491-501页

作者： emmanouil d.FYLLAdITAKIS Antonios X.MORONIS Konstantinos KIOUSIS Technological Educational Institute(TEI) of Athens Department of Energy Technology

This paper presents the design,optimization and fabrication of an EHd air pump intended for high-power electronic chip cooling *** high-voltage electrode configurations were selected and studied,in terms of the characteristics of the generated electric field,which play an important role in ionic wind *** this purpose,dedicated software is used to implement finite element *** design parameters,such as the electric field intensity,wind velocity,current flow and power consumption are *** different laboratory prototypes are fabricated and their performances experimentally *** procedure leads to the fabrication of a final prototype,which is then tested as a replacement of a typical fan for cooling a high power density electronic *** assist towards that end,an experimental thermal testing setup is designed and constructed to simulate the size of a personal computer’s CPU core of variable *** parametric study leads to the fabrication of experimental single-stage EHd pumps,the optimal design of which is capable of delivering an air flow of 51 CFM with an operating voltage of 10.5 ***,the theoretical and experimental results are evaluated and potential applications are proposed.

关键词： electrohydrodynamics(EHd) ionic wind EHd pump cooling apparatus finite element method computer CPU cooling electronic chip cooling

Controlled LEd Lighting for Horticulture: A Review

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Open Journal of Applied Sciences 2023年第2期13卷 175-188页

作者： emmanouil d. Fylladitakis Electrical & Electronic Engineering department Faculty of Engineering University of West Attica Athens Greece

As energy gradually becomes a more valuable commodity, the desire for reduced energy losses strengthens. Lighting is a critical field on this matter, as it accounts for a large percentage of the global electricity consumption and modern lighting systems are greatly more efficient than incandescent, discharge, and fluorescent lights. Previous research has proven that plants do not require the entire visible spectrum but react only to specific wavelengths, making it possible to control their growth and yield via artificial lighting. The flexibility of control of Light Emitting diode (LEd) lights allows for the combination of great energy losses reduction and controlled plant growth, achieving the improvement of two major parameters in a single action. This review paper summarizes the current research on the effect different light wavelengths have on specific plant species and discusses the applications of LEd lighting for horticulture, yield storage, and disease protection.

关键词： Horticulture Lighting Agriculture Lighting Controlled LEd Light Light Wavelength Effects Light Spectrum Vegetables Crops Photoreceptors

Kolmogorov Flow: Seven decades of History

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Journal of Applied Mathematics and Physics 2018年第11期6卷 2227-2263页

作者： emmanouil d. Fylladitakis Electrical & Electronic Engineering department Faculty of Engineering University of West Attica Athens Greece

The Kolmogorov flow (k-flow) is generated by a stationary sinusoidal force that varies in space. This flow is rather academic since generating such a periodic forcing in an unbounded flow is difficult to appear in nature. Nevertheless, it allows for simple experimental measurements and for a fairly detailed analytical treatment. Although simple, the k-flow makes a good test case for investigating simultaneously inhomogeneous, sheared, and anisotropic features in a flow, and several studies concerning the stability, transition, and turbulence of the k-flow have been published. The present article reviews the most important published works incorporating the k-flow as a test-bed for studying fluid mechanics, testing numerical or experimental methods, or even studying the properties of the k-flow itself.

关键词： Kolmogorov Flow Magnetohydrodynamics Two-dimensional Flows Review

USE OF CONSTRUCTION ANd dEMOLITION WASTESAS RAW MATERIALS IN CEMENT CLINKER PROdUCTION

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China Particuology 2006年第2期4卷 83-85页

作者： Christos-Triantafyllos Galbenis stamatis Tsimas Laboratory of Inorganic and Analytical Chemistry School of Chemical EngineeringNational Technical University of Athens 9 Heroon Polytechniou Zografou Campus 15773 Athens Greece

The aim of the present paper was to investigate the possibility of utilizing Construction and demolition （C＆d） wastes as substitutes of Portland cement raw meal. The C＆d wastes that were so used, were the Recycled Concrete Aggregates （RCA） and the Recycled Masonry Aggregates （RMA） derived from demolished buildings in Attica region, Greece. RCA and RMA samples were selected because of their calcareous and siliceous origin respectively, which conformed the composition of the ordinary Portland cement raw meal. For that reason, six samples of cement raw meals were prepared： one with ordinary raw materials, as a reference sample, and five by mixing the reference sample with RCA and RMA in appropriate proportions. The effect on the reactivity of the generated mixtures, was evaluated on the basis of the free lime content （fCaO） in the mixtures sintered at 1350℃, 1400℃ and 1450℃. Test showed that the added recycled aggregates improved the burnability of the cement raw meal without affecting negatively the cement clinker properties. Moreover, the formation of the major components （C3S1 C2S1 C3A and C4AF） of the produced clinkers （sintered at 1450℃） was corroborated by X-Ray diffraction （XRd）.

关键词： recycled concrete aggregates recycled masonry aggregates cement raw meal burnability study

Benefits of dielectric Oil Regeneration Systems in Power Transmission Networks: A Case Study

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Journal of Power and Energy Engineering 2024年第4期12卷 20-29页

作者： emmanouil d. Fylladitakis Savvas Katemliadis Ioanna Pantelaki department of Electric & Electronic Engineering University of West Attica Aegaleo Greece Supply Chain department Independent Power Transmission Operator Athens Greece department of Transmission System Maintenance Chemistry Laboratory Independent Power Transmission Operator Athens Greece

The criticality of transformers and reactors in the power transmission network and the paramount importance of ensuring their reliability through maintenance of the insulating oil is known. This paper presents a comprehensive examination of the efficacy and economic viability of a dielectric oil regeneration system, as implemented by the Transmission System Maintenance department (TSMd) of the Independent Power Transmission Operator (IPTO), Greece’s sole transmission operator. Through a detailed chemical analysis and performance evaluation, we assess the impact of the regeneration system on treated insulating oil quality over multiple cycles. The study reveals that the electrical properties of the insulating oil are fully restored after regeneration, negating the need to fully replace it, while the investment becomes cost-neutral within weeks from the commissioning of the regeneration system. This economic analysis, coupled with the system’s environmental benefits of reducing waste oil generation, positions the dielectric oil regeneration system as a compelling solution for the maintenance of power transmission assets.

关键词： Insulating Oil Regeneration Transformer Maintenance Economic Analysis Preventive Maintenance Case Study

Evolution of medical education in ancient Greece

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Chinese Medical Journal 2008年第21期121卷 2202-2206页

作者： emmanouil Pikoulis Pavlos Msaouel Efthimios d Avgerinos Sofia Anagnostopoulou Christos Tsigris Medical School of the National Kapodistrian University of Athens Athens Greece

The study of ancient Greece is essential for the proper understanding of the evolution of modern Western medicine. An important innovation of classical Greek medicine was the development of a body of medical theory as... 详细信息

关键词： medical education ancient Greece history of medicine Hippocrates

10 essentials for high performance quality in the 21st century

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Essentials for the improvement of healthcare using Lean & Six Sigma /

2012年

作者： d.H. stamatis.

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Angular decomposition and Sign Solved Propagator of the 2d and 3d Helium Atom Path Integrals

2011年

作者： stamatis d. H.

ISBN: (纸本)9781439846018

"By using theories of Six Sigma and Lean methodology, this text presents solutions to fundamental problems in healthcare. This text breaks the system down into three fundamental areas: primary care, hospitals, and managed care. The author identifies the four critical issues that affect healthcare as it relates to efficiency and cost by addressing the specific issues. The book discusses the applica

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Journal of Applied Mathematics and Physics 2022年第2期10卷 538-557页

作者： emmanouil George Thrapsaniotis Athens Greece

In the present paper on the one hand we apply the central limit theorem to the solution of the sign problem of a path integral of two-interacting particles in potential and give an expression for the sign solved propagator (SSP) derived from that solution and on the other hand we perform the angular decomposition of the path integrals of the 2d and 3d Helium atoms. Finally, we combine those two results and derive the SSPs of the 2d and 3d Helium atoms.

关键词： Propagator Angular decomposition Sign Problem Central Limit Theorem 3d Helium 2d Helium