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Dissertations / Theses on the topic 'Micro Channel Plate'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Ammari, Ali. "Experimental Investigation ofTwo-phase Flow in Microchannels“Co-current Absorption of Ammonia in Water to Design an Innovative Bubble Plate Absorber” : “Co-current Absorption of Ammonia in Water to Design an Innovative Bubble Plate Absorber”." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-116779.

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For ammonia-water absorption refrigeration technology it is suggested to use bubble type absorbers because the higher contact surface area provides a higher mass transfer rate. Furthermore, dispersion of bubbles in the bulk of liquid phase also exhibits better heat transfer characteristics that facilitate the recovery of dissipated heat of the exothermic absorption.In this context, plate heat exchangers are believed to be an option to be employed as absorber in some applications. Commercial plate heat exchangers have only one inlet and outlet for a working fluid and as a result, gas and liquid

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2

Giannini, Giulia. "Caratterizzazione di un rivelatore MCP-PMT per misure di risoluzione temporale e spaziale." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7291/.

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Questa tesi descrive una prima serie di misure effettuate per caratterizzare le prestazioni di un rivelatore di fotoni MCP-PMT a multi anodo, con particolare enfasi sulla risoluzione temporale e spaziale. I risultati sono stati confrontati con quelli relativi a tre ulteriori rivelatori (un MCP-PMT a singolo anodo e due fotomoltiplicatori a silicio). Le misure sono state effettuate presso i Laboratori dell’Istituto Nazionale di Fisica Nucleare (INFN - Sezione di Bologna) per conto del Dipartimento di Fisica dell’Università di Bologna. La rivelazione della luce ha sempre occupato un posto fonda

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3

Pfeifer, Marc Friedrich [Verfasser], and Klaus [Akademischer Betreuer] Werner. "Development of Low Power Readout Electronics for Micro Channel Plate Detectors with Cross Strip Anodes for UV Space Observatories / Marc Friedrich Pfeifer ; Betreuer: Klaus Werner." Tübingen : Universitätsbibliothek Tübingen, 2015. http://d-nb.info/1163320803/34.

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4

Oyinlola, Muyiwa Adeyinka. "Heat transfer in solar absorber plates with micro-channels." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/77388/.

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Analytical, computational and experimental studies were carried out to investigate heat transfer and fluid flow in micro-channel absorber plates for compact (thin and light-weight) solar thermal collectors. The main objective of the work was to study different design and/or operating scenarios as well as study the significance of various micro-scaling effects. Analytical investigation showed that, under similar conditions, the proposed design yields a much higher fin efficiency, F and collector efficiency factor, F’ compared with the conventional solar collector design. An analytical model com

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5

Turan, Cabir. "Investigations on the Effect of Manufacturing on the Contact Resistance Behavior of Metallic Bipolar Plates for Polymer Electrolyte Membrane Fuel Cells." VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/2629.

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Polymer electrolyte membrane fuel cells (PEMFCs) have emerged as a strong and promising candidate to replace internal combustion engines (ICE) due their high efficiency, high power density and near-zero hazardous emissions. However, their commercialization waits for solutions to bring about significant cost-reductions and significant durability for given power densities. Bipolar plate (BPP) with its multi-faceted functions is one of the essential components of the PEMFC stacks. Stainless steel alloys are considered promising materials of choice for bipolar plate (BPP) applications in polymer e

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6

Furberg, Richard. "Enhanced Boiling Heat Transfer on a Dendritic and Micro-Porous Copper Structure." Doctoral thesis, KTH, Tillämpad termodynamik och kylteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-47538.

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A novel surface structure comprising dendritically ordered nano-particles of copper was developed during the duration of this thesis research project. A high current density electrodeposition process, where hydrogen bubbles functioned as a dynamic mask for the materials deposition, was used as a basic fabrication method. A post processing annealing treatment was further developed to stabilize and enhance the mechanical stability of the structure. The structure was studied quite extensively in various pool boiling experiments in refrigerants; R134a and FC-72. Different parameters were investiga

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7

Boone, George E. "Emotion, community development, and the physical environment: An experimental investigation of measurements." UKnowledge, 2013. http://uknowledge.uky.edu/cld_etds/10.

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A wide range of research fields have studied how emotions and behavior are affected by the physical environment. This gestalt theorist approach of experimental research as well seeks to measure emotion (using the valence-arousal scale) and micro-scale community development interactions when weighted physical environment factors are adjusted. Community development (CD) interactions at the micro-scale have received but slight attention from scholars in the CD research field and this study aims partially to investigate developing objective measures from social observations. CD interactions from r

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8

Wei, Wei. "Characteristics of the late Mesozoic tectonic evolution of the South China block and geodynamic implications : Multi-approach study on the Qingyang-Jiuhua, Hengshan and Fujian coastal granitic massifs." Phd thesis, Université d'Orléans, 2013. http://tel.archives-ouvertes.fr/tel-01058791.

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The vast distribution and long duration of the Late Mesozoic magmatism in the eastern part of South China presents a unique case in the world. This offers a natural laboratory to study the process of magma genesis, the magma emplacement mode, the relationship between magmatism and tectonics, the geodynamic role on the magma emplacement and lithospheric evolution. Since 50's, particularly 90's of the last century, geoscientists have made important efforts in geological cartography and carried out numerous studies with remarkable scientific achievements, building a solid background to understand

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9

Pan, Chien-Chiuan, and 潘建全. "An analysis of micro spiral channel bipolar plate using stamping process." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/53233073407282465077.

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碩士<br>國立勤益科技大學<br>機械工程系<br>101<br>The purpose of this study was to analysis stainless steel spiral micro flow channel bipolar plate stamping process for effect of blank formability and microscopic size effect. Bipolar plate is a key component for proton exchange membrane fuel cell. But it is very expensive and need micro thickness if using conventional graphite bipolar plate. A metal bipolar plate is another choice. This study use finite element analysis method (FEA) to analysis program and simulation stainless steel spiral micro flow channel bipolar plate stamping process. Blank length and wi

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10

Lin, Jiang-cheng, and 林蔣承. "An analysis of pin-type micro channel of bipolar plate using stamping process." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/57539548626181482724.

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碩士<br>國立勤益科技大學<br>機械工程系<br>100<br>The bipolar plate is one of key components of proton exchange membrane fuel cell.But the cost of using the graphite bipolar plate is more expensive and the thickness needs to be increased a few millimeters. These reasons bring metal bipolar plate come into being. This paper is discussed the influence between the stamping process formability and micro-size effect by using the finite element analysis system ,simulating stainless steel bipolar plate pin-type microfluidic stamping process. The length and width of materials are both 15mm, stainless steel sheet (SUS

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11

YEN, YI-FENG, and 顏義峰. "Effects of Flow Channel on Micro-reformer Performance and Local Transport Phenomena of the Plate Methanol Steam Micro-reformer." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/91485286370535521322.

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碩士<br>華梵大學<br>機電工程學系博碩專班<br>98<br>In this thesis, the computational fluid dynamics software CFDRC is used to establish a three-dimensional numerical model of the methanol steam micro-reformer channels. The effects of the different flow field designs (including E-type flow field, U-type flow field and Z-type flow field) and heat/mass transfer conditions (including wall temperature, inlet temperature, fuel velocity and fuel ratio) on the methanol conversion and heat/mass transfer phenomena of a plate methanol steam micro-reformer are investigated. The results indicate that an appropriate Z-type

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12

Wapelhorst, Eric [Verfasser]. "Design und Herstellung eines planar integrierten Mikromassenspektrometers mit Micro-Channel-Plate-Detektor / von Eric Wapelhorst." 2010. http://d-nb.info/1001623576/34.

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13

Lin, Lung-Yi, and 林龍億. "Studies of Two-Phase Flow Boiling Heat Transfer on Dielectric Fluid HFE-7100 in Micro-Channel Cold Plate." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/92465233532891756911.

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碩士<br>國立中正大學<br>機械工程所<br>95<br>Flow boiling in micro-channel is being considered in number of advanced heat transfer application. However, there are many fundamental issues from the heat transfer perspective that still remain unresolved. In this study, the characteristics of two-phase flow boiling heat transfer and pressure drop on dielectric fluid HFE-7100 flowing in micro-channel cold plate is investigated by experimental method. The effects of the heat flux, mass flux and vapor quality on dielectric fluid HFE-7100 are examined in the present study. For single-phase flow, the dielectric flui

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14

Hsueh, Ching-Yi, and 薛清益. "Study on Heat and Mass Transfer Characteristics and Flow Channel Design in a Plate Methanol Steam Micro-Reformer." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/24034382700346106798.

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博士<br>國立交通大學<br>機械工程學系<br>98<br>This dissertation aims to examine numerically heat and mass transport phenomena in the plate methanol steam micro-reformer (including methanol steam micro-reformer and methanol catalytic combustor). The first focus is to investigate the effects of geometric and thermo-fluid parameters on the methanol conversion and gas concentration distributions of the methanol steam micro-reformer in order to obtain better channel designs and operating conditions. Furthermore, a methanol steam micro-reformer with a methanol catalytic combustor is considered in the present work

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15

Ho, Chin-Lin, and 何俊霖. "Applying UV-curing Plate-to-Plate Rolling Processes to Produce and Test Micro-Channels." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/snaqus.

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碩士<br>國立高雄應用科技大學<br>模具工程系碩士班<br>102<br>Biotechnology constant breakthroughs in recent years , and decoding of the human and a variety of biological success, making the rapid development of biotechnology, bio-chips were on the most representative.among them, the microfluidic chip integrated specimen can quickly analyze complete traditional laboratory analysis process carried out using the micro-channel to transmit the specimen, mixing, reaction, separation purposes, the advantage of miniaturization of the product can be achieved shortening the detection time consuming, and the detection accurac

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16

Lin, Yi-Kai, and 林倚楷. "Optimization of Applying UV-Curing Plate-to-Plate Roller Embossing on Micro-Channels Fabrication." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/hx642j.

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碩士<br>國立高雄應用科技大學<br>模具工程系<br>103<br>It includes three parts in improving UV-curing plate-to-plate roller embossing machine. The first part is to better the pressure controlling system by using pneumatic cylinder instead of micrometer caliper to control the pressure. By doing so, it can make the pressure get a more accurate control and make the machine work more stably. The second part is to improve lightproof components. The improvement can precisely control the size of UV light exposure with different UV glues. Thus, UV glue can be solidified accurately after rolling. The third part is to use

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17

Ye, Jiun-Ming, and 葉峻銘. "Analysis of stainless steel bipolar plates with micro-channel stamping processes." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/81672692614721713470.

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碩士<br>國立勤益科技大學<br>機械工程系<br>99<br>The aim of this study is to resolve the stainless steel bipolar plates with micro channel forming form stamping process and micro-size effect of the impact. Regarding the use of rigid punch on 50μm-thick stainless steel sheet (SUS 304) for micro-channel stamping process in this study, the channel design is 0.8*0.75mm. Besides, the finite element method and the experimental results are used to analyze the micro-stamping process key parameters. The use of finite element method and experimental comparison, to find the best process parameters. The methodology of el

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18

Li, Shih-Chun, and 李世軍. "Effect of Bolts Locking Sequence on the Deformation of Flow-Channel Plates in Micro-PEMFC." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/vgkzsw.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>96<br>The design and method of cell assembly plays an important role in the performance of PEM fuel cell. The cell assembly will affect the contact behavior between the bipolar plates, flow-channel plates, gas diffusion layers (GDLs) and membrane electrode assembly (MEA). From the past studies, it was noted that the flow-channel plates in the cell will be deformed while the cell was assembled by locking with bolts. This phenomenon may lead to leakage of fuels, high contact resistance and malfunctioning of the cells. The main aim of this research is to study the

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19

Wang, Shung-ping, and 王祥賓. "Finite Element Analysis on Forming and Efficiency of Micro-Channels of Metallic Bipolar Plate for Fuel Cell." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/50866379950579641527.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>101<br>Bipolar plate is an important component of the fuel cell. Because there is no suitable fabrication process for mass-production of bipolar plate, the cost of portable fuel cell is still too high now a days. In this study, the rubber pad forming process was used to fabricate the micro-channels on metallic bipolar plate and the effect on process parameters of the rubber pad forming were analyzed. Polyurethane rubbers were used for the rubber pads, and SUS316L stainless steel sheets with a thickness of 0.1mm were tested in the experiment. Firstly, finite element a

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20

Chen, Li-chong, and 陳立崇. "Effect of Bolts Assembly on the Deformation and Pressure Distribution of Flow-Channel Plates in Micro-PEMFC." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/51077303438453821912.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>98<br>In general, a PEMFC was assembled by using a number of locked bolts. But this assembly will cause concentrated loads existed on the upper and lower portions of the end plates, so that the pressure distributed non-uniformly at the internal structures in the PEMFC and thus causing uneven distributed deformations of flow-channel plates. This phenomenon may lead to the leak of reaction gas, and causing not only the decrease of the efficiency of PEMFC, but also the increase of the dangerous. If the fuel cell size getting smaller, the influence may be more sever

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21

Mrigakshi, Alankrita Isha. "Study and test of micro-channel plates used in the dual ion spectrometer of the MMS mission by NASA." Thesis, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-41949.

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The Magnetospheric Multiscale mission led by NASA has been designed to study the micro-physics of Magnetic Reconnection in Earth's magnetosphere by using four identical spacecrafts with instruments with high temporal and spatial resolutions. Among these instruments are the Dual Ion Spectrometers (DIS) engineered to measure the 3D distribution of ion flux in space. The detector assembly of the DIS consists of Micro-Channel Plates (MCP) mounted in Chevron configuration. Centre d'Etude Spatiale des Rayonnements (CESR), Toulouse is responsible for the provision and testing of all fifty

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