Log in

Relevant bibliographies by topics / Critical flux / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Critical flux.

Dissertations / Theses on the topic 'Critical flux'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Critical flux.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Yang, Jun. "Effect of non-uniform axial heat-flux distribution on critical heat flux." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26816.

Full text

Abstract:

An experimental study of the effect of axial flux distribution (AFD) on critical heat flux (CHF) was conducted in directly heated tubes at the Freon-equivalent CANDU reactor conditions of interest. CHF measurements were obtained on test sections with four nonuniform AFD profiles as well as a uniform AFD profile using HFC-134a as a test fluid. Each of the non-uniform AFD test sections had a stepped cosine heat flux profile with approximately 16 heat flux steps. The test conditions covered a pressure range of 1662 to 2389 kPa, a mass flux range of 2827 to 4648 kg m-2 s -1 and an inlet quality ra

APA, Harvard, Vancouver, ISO, and other styles

2

Manning, Jonathan Paul. "Critical heat flux in non-circular channels." Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/61534.

Full text

Abstract:

In the design of nuclear reactors adequate cooling must be demonstrated for all operational states as well as during and after design basis accidents. A key aspect of this design activity is the prediction of the Critical Heat Flux (CHF). The focus of the work in this thesis was the prediction of CHF in non-circular channels. The Look Up Table was used to analyse several burnout studies for non-circular channels in the literature and was found to be a poor predictive tool for these geometries. A conventional phenomenological model developed for round tubes was also shown to give poor predictio

APA, Harvard, Vancouver, ISO, and other styles

3

Thompson, Jordan Lee. "Direct Measurement of Boiling Water Heat Flux for Predicting and Controlling Near Critical Heat Flux." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23091.

Full text

Abstract:

A novel method for measuring heat flux of boiling water is designed and built to study critical heat flux (CHF) and observe the response of a heat flux sensor when CHF occurs. A high temperature heat flux sensor is embedded in the wall of a pipe to get a direct measurement of the surface heat flux and sensor temperature. By submerging the pipe in water and applying a controlled heat flux to the inside diameter over the area where the sensor is located, boiling is created on the outer surface while measuring the heat flux. The heat flux is gradually increased up to CHF and the heat flux respons

APA, Harvard, Vancouver, ISO, and other styles

4

Joober, Khaled. "The effect of flow geometry on critical heat flux." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6544.

Full text

Abstract:

An extensive and systematic literature review on the effect of flow geometry on the Critical Heat Flux (CHF) has been performed. This review covers most of the flow geometries such as tubes, concentric and eccentric annuli, rectangular channels, irregular-shaped channels and bundles. The following geometric parameters have been found to strongly influence the CHF: (i) hydraulic-equivalent diameter, (ii) heated-equivalent diameter, (iii) gap size, (iv) unheated adjacent surface, (v) heated adjacent surface, (vi) curvature, (vii) eccentricity (including bowing), and (viii) channel shape. It is f

APA, Harvard, Vancouver, ISO, and other styles

5

Le, Clech Pierre. "Process configurations and fouling in membrane bioreactors." Thesis, Cranfield University, 2002. http://dspace.lib.cranfield.ac.uk/handle/1826/11336.

Full text

Abstract:

MBR process consists of a suspended growth biological reactor combined with a membrane unit. The widespread of this system for waste water treatment is contained by membrane fouling, which is strongly influenced by three factors: biomass characteristics, operating conditions and membrane characteristics. Fouling control techniques mainly include low-flux operation (sub-critical flux operation) and/or high-shear slug flow aeration in submerged. configuration. Based on the concept of the critical flux (Jo), the flux-step method has been developed to more fully characterise transmembrane pressure

APA, Harvard, Vancouver, ISO, and other styles

6

Truong, Bao H. (Bao Hoai). "Determination of pool boiling Critical Heat Flux enhancement in nanofluids." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/41689.

Full text

Abstract:

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, June 2007.<br>"May 2007."<br>Includes bibliographical references (leaves 51-53).<br>Nanofluids are engineered colloids composed of nano-size particles dispersed in common fluids such as water or refrigerants. Using an electrically controlled wire heater, pool boiling Critical Heat Flux (CHF) of Alumina and Silica water-based nanofluids of concentration less than or equal to 0.1 percent by volume were measured. Silica nanofluids showed CHF enhancement up to 68% and there seems to be a monotonic relat

APA, Harvard, Vancouver, ISO, and other styles

7

Chen, Geng. "Analytical and experimental studies of critical heat flux in complex geometry." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ66137.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Lalonde, Richard. "Flux line interactions in conventional and high critical transition temperature superconductors." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/6031.

Full text

Abstract:

We have developed a novel experimental approach for the study of the interaction of sheets of non parallel flux lines in hysteric type II superconductors. We continuously monitor the evolution of the components of the magnetic flux density $\Vert$ and $\perp$ to $H\sb{a}$ (i.e. $\langle B\sb{z}\rangle$ and $\langle B\sb{y}\rangle$) as $H\sb{a}$ is raised to various intensities, and then reduced to zero. In our investigation of a high $T\sb{c}(YBa\sb{2}Cu\sb{3}O\sb{7-x}$) ceramic, $H\sb{a}$ exceeded $H\sb{*}$, the first full penetration field. We applied the phenomenological Clem general critic

APA, Harvard, Vancouver, ISO, and other styles

9

Tanase, Aurelian. "Improved methodology for deriving the critical heat flux look-up table." Thesis, University of Ottawa (Canada), 2007. http://hdl.handle.net/10393/27923.

Full text

Abstract:

A literature review on critical heat flux (CHF) prediction methods confirmed that the CHF look-up table (LUT) has many advantages over the other prediction methods: it covers the widest range of flow conditions, it is the most accurate CHF prediction method and it is computationally very efficient. The LUT has been included in the major thermalhydraulics and safety analysis computer codes. The LUT accuracy has increased over the years, although several areas have been identified where further improvements are desirable. These areas include (i) the screening of the experimental data, (ii) effec

APA, Harvard, Vancouver, ISO, and other styles

10

Roach, Gregory M. Jr. "Onset of flow instability and critical heat flux in uniformly-heated microchannels." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/19048.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Cui, Xingdong. "Prediction of critical heat flux in bundles using tube look-up table." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0002/MQ28415.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Kuan, Wai Keat. "Experimental study of flow boiling heat transfer and critical heat flux in microchannels /." Link to online version, 2006. https://ritdml.rit.edu/dspace/handle/1850/1887.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Youravong, Wirote. "Critical flux and fouling during ultrafiltration of milk components : hydrodynamic and physicochemical effects." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252239.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

VALENTE, BELMIRO RUFINI. "ANALYSIS OF CRITICAL HEAT FLUX IN PWR NUCLEAR REACTORS USING ARTIFICIAL NEURAL NETWORKS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1996. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19433@1.

Full text

Abstract:

CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>A ocorrência de fluxo crítico de calor – FCC – é o principal fator termo-hidráulico limitante à produção de energia em reatores nucleares do tipo PWR (Reator a Água Pressurizada). O método usual de determinação de FCC é baseado em simulação numérica, utilizando programas como os COBRA, desenvolvidos a partir da análise dos subcanais do núcleo do reator. Esses programas implementam uma correlação, ou função empírica, que interpola os resultados obtidos por simulação experimental, realizada nas Seções de testes – ST-, de forma a ob

APA, Harvard, Vancouver, ISO, and other styles

15

Truong, Bao H. (Bao Hoai). "Critical heat flux enhancement via surface modification using colloidal dispersions of nanoparticles (Nanofluids)." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44775.

Full text

Abstract:

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2008.<br>Includes bibliographical references (leaves 97-103).<br>Nanofluids are engineered colloidal dispersions of nanoparticles (1-100nm) in common fluids (water, refrigerants, or ethanol...). Materials used for nanoparticles include chemically stable metals (e.g., gold, silver, copper), metal oxides (e.g., alumina, zirconia, silica, titania) and carbon in various forms (e.g., diamond, graphite, carbon nanotubes). The attractive properties of nanofluids include higher thermal conductivity, heat tr

APA, Harvard, Vancouver, ISO, and other styles

16

Skirpan, Zachary. "Multiphase CFD benchmark of experimental critical heat flux data at PWR operating conditions." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127300.

Full text

Abstract:

Thesis: S.M., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, May, 2020<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 85-89).<br>Critical Heat Flux (CHF) in flow boiling represents the fundamental upper limit for thermal hydraulic performance of PWR fuel. Currently, the nuclear industry relies on expensive, prototypical experiments using electrically heated, full-height rod assemblies to determine the limit of the boiling crisis. The development of next-generation Multiphase Computational Fluid Dynamics (M-CFD)

APA, Harvard, Vancouver, ISO, and other styles

17

Ahmad, Masroor. "Critical heat flux and associated phenomena in forced convective boiling in nuclear systems." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9181.

Full text

Abstract:

In evaporation of a liquid flowing in a tube or nuclear fuel element, there exists a transition (known as "dryout", "burnout", "boiling crisis" or "critical heat flux", CHF) from a high heat transfer coefficient regime to one of greatly reduced heat transfer coefficient. The conditions leading to dryout or CHF and the behaviour of wall temperatures in the ("post dryout or post CHF") region beyond it are of immense importance in nuclear reactor safety. In a nuclear reactor, the clad temperature excursion in the post-dryout region may be unacceptably high and the prediction of the location of dr

APA, Harvard, Vancouver, ISO, and other styles

18

Wong, Wai-Chuen. "Effect of tube diameter on critical heat flux in vertical steam-water flow." Thesis, University of Ottawa (Canada), 1997. http://hdl.handle.net/10393/4295.

Full text

Abstract:

The effect of tube diameter on critical heat flux (CHF) has been examined by (1) analyzing existing experimental data, (2) reviewing existing correlations and semi-analytical models, and (3) obtaining CHF measurements in two vertical tubes of different diameters. Based on constant local flow conditions, the parametric trend of available CHF data shows generally a decreasing CHF with increasing tube diameter. Due to the large data scatter (inherent uncertainty within different sets of data), a definite conclusion cannot be drawn. The observations indicated that the tube-diameter effect on CHF i

APA, Harvard, Vancouver, ISO, and other styles

19

Bhatia, Mohit. "MgB₂ superconductors: processing, characterization and enhancement of critical fields." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1190055943.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Stoddard, Ryan Manse. "Onset of flow instability and critical heat flux in horizontal, thin, uniformly-heated annuli." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17135.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Carson, Robert J. "Critical heat flux for a heated surface impacted by a stream of liquid droplets." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/19579.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Neal, Peter Ross Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "An examination of the nature of critical flux and membrane fouling by direct observation." Awarded by:University of New South Wales. School of Chemical Sciences and Engineering, 2006. http://handle.unsw.edu.au/1959.4/30584.

Full text

Abstract:

Securing water in the right quantities at the right quality for the right price is a major issue around the world. Membranes are making an increasingly important contribution to meeting this need; however their performance is limited by fouling. This thesis reports on an investigation into the fouling of systems related to water treatment using the Direct Observation Through the Membrane (DOTM). The investigation focused on the measurement of critical flux and observation of particle behaviour under a variety of conditions and for a number of different particles. The range of meanings attribut

APA, Harvard, Vancouver, ISO, and other styles

23

Andersson, Patrik. "Predicting the deflection of electric heater rods in a critical heat flux test loop." Thesis, KTH, Fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147354.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Phillips, Bren Andrew. "Nano-engineering the boiling surface for optimal heat transfer rate and critical heat flux." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/76536.

Full text

Abstract:

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 130-133).<br>The effects on pool boiling characteristics such as critical heat flux and the heat transfer coefficient of different surface characteristics such as surface wettability, roughness, morphology, and porosity are not well understood. Layer-by-layer nanoparticle coatings were used to modify the surface of a sapphire heater to control the surface roughness, the layer thickness, and the surface chemistr

APA, Harvard, Vancouver, ISO, and other styles

25

Ahmed, Amer Naji. "Rejection and critical flux of calcium sulphate in a ceramic titanium dioxide nanofiltration membrane." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/rejection-and-critical-flux-of-calcium-sulphate-in-a-ceramic-titanium-dioxide-nanofiltration-membrane(19fb66ec-3ba5-4b13-b65f-690fbb80ddc3).html.

Full text

Abstract:

This thesis describes the rejection efficiency and the fouling behaviour of calcium sulphate solutes in a 1 nm tubular ceramic titanium dioxide nanofiltration membrane. Calcium sulphate is considered as one of the greatest scaling potential inorganic salts that responsible for membrane fouling which represents a main challenge in the expansion of membrane processes for desalination of brackish and saline water. The surface charge type and magnitude for the composite amphoteric TiO_2 membrane were characterised using streaming potential measurements. Electrokinetic membrane experiments were con

APA, Harvard, Vancouver, ISO, and other styles

26

Kiameh, Bassam Philip. "Prediction of critical heat flux (CHF) for non-aqueous fluids in forced convective boiling." Thesis, University of Ottawa (Canada), 1986. http://hdl.handle.net/10393/21731.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Zhou, Sihai. "Processing and characterisation of MgB₂ superconductors." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20041111.135706/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Bockwoldt, Todd S. "Induced convective enhancement of the critical heat flux for partially heated surfaces in pool boiling." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/13094.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Gandolfini, Germain. "Comparison of flux line cutting behaviour in high critical temperature and conventional Type II superconductors." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5757.

Full text

Abstract:

The magnetic behaviour (magnetization curves, Meissner effect, hysteresis losses, remanent flux and flux line cutting) for high $T\sb{c}$ samples of Nd and $YBa\sb{2}Cu\sb{3}O\sb{7-x}$ at 77 K, semi-reversible PbIn and hysteretic VTi at 4.2 K have been investigated and compared. The magnetic behaviour of the high $T\sb{c}$ samples and of the PbIn are remarkably similar but contrasts dramatically with the phenomena observed in the VTi. A hump structure appears in the low field region of the initial magnetization of the high $T\sb{c}$ samples. This phenomenon occurs because the sintered samples

APA, Harvard, Vancouver, ISO, and other styles

30

Tetreault-Friend, Melanie. "Systematic investigation of the effects of hydrophilic porosity on boiling heat transfer and critical heat flux." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/95571.

Full text

Abstract:

Thesis: S.M., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 97-99).<br>Predicting the conditions of critical heat flux (CHF) is of considerable importance for safety and economic reasons in heat transfer units, such as in nuclear power plants. It is greatly advantageous to increase this thermal limit and much effort has been devoted to studying the effects of surface characteristics on it. In particular, recent work carried out by O'Hanley demonstrated the separa

APA, Harvard, Vancouver, ISO, and other styles

31

DeWitt, Gregory L. "Investigation of downward facing critical heat flux with water-based nanofluids for In-Vessel Retention applications." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/76495.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 359-368).<br>In-Vessel Retention ("IVR") is a severe accident management strategy that is power limiting to the Westinghouse AP1000 due to critical heat flux ("CHF") at the outer surface of the reactor vessel. Increasing the CHF level by altering the cooling fluid would increase the safety margin of current design power or allow for higher power. The modification to current licensed design to implement a new

APA, Harvard, Vancouver, ISO, and other styles

32

Kim, Sung Joong Ph D. Massachusetts Institute of Technology. "Subcooled flow boiling heat transfer and critical heat flux in water-based nanofluids at low pressure." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53274.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 285-290).<br>A nanofluid is a colloidal suspension of nano-scale particles in water, or other base fluids. Previous pool boiling studies have shown that nanofluids can improve the critical heat flux (CHF) by as much as 200%. In this study, subcooled flow boiling heat transfer and CHF experiments were performed with low concentrations of alumina, zinc oxide, and diamond nanoparticles in water (< 0.1 % by volum

APA, Harvard, Vancouver, ISO, and other styles

33

Soltanian, Saeid. "Development of superconducting magnesium diboride conductors." Institute for Superconducting & Electronic Materials - Faculty of Engineering, 2004. http://ro.uow.edu.au/theses/381.

Full text

Abstract:

The work in this thesis concentrates on the fabrication and characterization of MgB2 superconducting bulk wire and tape. An overview of the research on MgB2 superconductor during the last three years is also provided. High transport and magnetic critical current density values above 105 A/cm2 have been obtained for metal-clad wires and tapes. Fe-clad MgB2 tapes were fabricated using a powder-in-tube technique. The tape shows a sharp transition with a transition width ΔTc of 0.2 K and a Tc0 of 37.5 K. An high transport critical current value of 1.7 × 104 A/cm2 for both 29.5 K in 1 Tesla and 33

APA, Harvard, Vancouver, ISO, and other styles

34

Yao, Qiwen. "Study of synthesis, structures and superconducting properties of magnesium diboride MgB₂ material." Access electonically, 2004. http://ro.uow.edu.au/theses/404.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Aritake, T., T. Noda, H. Shimizu, Y. Yokomizu, T. Matsumura, and N. Murayama. "Relation between critical current density and flux flow resistivity in Bi2223 bulk element for fault current limiter." IEEE, 2003. http://hdl.handle.net/2237/6788.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Nyhus, Jørgen. "Resonant Ultrasonic System Design, and Measurements of Critical Behaviour and Flux-Line Elasticity in High Temperature Superconductors." Doctoral thesis, Norwegian University of Science and Technology, Department of Physics, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2117.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Vaitekunas, David A. "An investigation of the effect of flow obstructions on critical heat flux, pressure drop and heat transfer." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0020/NQ57073.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Kang, Yong Tae. "Experimental investigation of critical heat flux in transient boiling systems with vertical thin rectangular parallel plate channels /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1244826053.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Shimizu, H., Y. Yokomizu, M. Goto, T. Matsumura, and N. Murayama. "A study on required volume of superconducting element for flux flow resistance type fault current limiter." IEEE, 2003. http://hdl.handle.net/2237/6787.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Gong, Shengjie. "An Experimental Study on Micro-Hydrodynamics of Evaporating/Boiling Liquid Film." Doctoral thesis, KTH, Kärnkraftsäkerhet, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-50216.

Full text

Abstract:

Study of liquid film dynamics is of significant importance to the understanding and control of various industrial processes that involve spray cooling (condensation), heating (boiling), coating, cleaning and lubrication. For instance, the critical heat flux (CHF) of boiling heat transfer is one of the key parameters ensuring the efficiency and safety of nuclear power plants under both operational and accident conditions, which occurs as the liquid layers (microlayer and macrolayer) near the heater wall lose their integrity. However, an experimental quantification of thin liquid film dynamics i

APA, Harvard, Vancouver, ISO, and other styles

41

Stromberger, Jöerg H. "Effects of forced wall vibration on the onset of flow instability and critical heat flux in uniformly-heated microchannels." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/17062.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Edwards, Bronwyn K. "Effect of combined nanoparticle and polymeric dispersions on critical heat flux, nucleate boiling heat transfer coefficient, and coating adhesion." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53288.

Full text

Abstract:

Thesis (S.M. and S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 123-126).<br>An experimental study was performed to determine thermal performance and adhesion effects of a combined nanoparticle and polymeric dispersion coating. The critical heat flux (CHF) values and nucleate boiling heat transfer coefficients (HTC) of nickel wires pre-coated using 1.0% alumina, 0.1% alumina, 500ppm polyallylamine hydrochloride (PAH), and 0.1% alumina combined with 500ppm PAH dispe

APA, Harvard, Vancouver, ISO, and other styles

43

Milliken, Damion Alexander. "Uranium doping of silver sheathed bismuth-strontium-calcium-copper-oxide superconducting tapes for increased critical current density through enhanced flux pinning." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040810.154223/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Chan, Robert Chemical Engineering &amp Industrial Chemistry UNSW. "Fouling mechanisms in the membrane filtration of single and binary protein solutions." Awarded by:University of New South Wales. Chemical Engineering and Industrial Chemistry, 2002. http://handle.unsw.edu.au/1959.4/18832.

Full text

Abstract:

In this study the fouling mechanisms of various microfiltration and ultrafiltration membranes were studied when subjected to crossflow filtration using various protein solutions. Experimentation was carried out using controlled flux experiments and fouling phenomena was investigated via the monitoring of the transmembrane pressure (TMP) and rejection. Electron microscopy was employed to study fouling on microfiltration membranes when single protein solutions were filtered while a novel method involving Matrix-Assisted Laser Desorption Ionisation Mass Spectrometry (MALDI-MS) was developed to qu

APA, Harvard, Vancouver, ISO, and other styles

45

Wong, Pit-Leong. "Performance Improvements of Multi-Channel Interleaving Voltage Regulator Modules with Integrated Coupling Inductors." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/27148.

Full text

Abstract:

The emergence of the Intel Pentium TM processor necessitates that a dedicated converter, the voltage regulator module (VRM), be physically located very close to the processor in computer power systems. The efficiency and transient response specifications of the VRM place contradictory requirements on the inductance. This dissertation discusses possible VRM inductor designs to improve efficiency without compromising transient responses. The multi-channel interleaving buck converter is the most popular topology for present VRMs. Analysis in this work shows that the small-signal model of an n-ch

APA, Harvard, Vancouver, ISO, and other styles

46

Gourbil, Ange. "Etude expérimentale de l'ébullition convective en milieu poreux : assèchement et flux critique." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/18597/1/GOURBIL_Ange.pdf.

Full text

Abstract:

Cette thèse est motivée par le besoin de compléter les connaissances actuelles des phénomènes ayant lieu lors d’un renvoi d’eau dans un lit de débris radioactifs, opération appelée « renoyage » et qui intervient dans une séquence d’accident grave où un cœur de réacteur nucléaire est dégradé suite à une perte prolongée de refroidissement primaire. Notre étude, de nature expérimentale, vise à mieux caractériser la crise d’ébullition en convection forcée, dans un milieu poreux chauffant. Le cœur du dispositif expérimental est un milieu poreux modèle quasibidimensionnel, composé de 276 cylindres d

APA, Harvard, Vancouver, ISO, and other styles

47

Hayes, Benjamin Zed. "Experimental study of the effect of channel orientation and flow oscillations on nucleate boiling heat transfer and the critical heat flux." Diss., Restricted to subscribing institutions, 2007. http://proquest.umi.com/pqdweb?did=1383482001&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Forrest, Eric Christopher. "Nanoscale modification of key surface parameters to augment pool boiling heat transfer and critical heat flux in water and dielectric fluids." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/52799.

Full text

Abstract:

Thesis (S.M. and S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 123-130).<br>Surface effects on pool boiling heat transfer and the critical heat flux are well documented but poorly understood. This study investigates the pool boiling characteristics of various fluids, and demonstrates that surface ef

APA, Harvard, Vancouver, ISO, and other styles

49

O'Hanley, Harrison Fagan. "Separate effects of surface roughness, wettability and porosity on boiling heat transfer and critical heat flux and optimization of boiling surfaces." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78208.

Full text

Abstract:

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 157-161).<br>The separate effects of surface wettability, porosity, and roughness on critical heat flux (CHF) and heat transfer coefficient (HTC) were examined using carefully-engineered surfaces. All test surfaces were prepared on nanosmooth indium tin oxide - sapphire heaters and tested in a pool boiling facility in MIT's Rea

APA, Harvard, Vancouver, ISO, and other styles

50

Sayee, Mohan Kaushik. "Pool Boiling of FC 770 on Graphene Oxide Coatings: A Study of Critical Heat Flux and Boiling Heat Transfer Enhancement Mechanisms." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/71873.

Full text

Abstract:

This thesis investigates pool boiling heat transfer from bare and graphene-coated NiCr wires in a saturated liquid of FC 770, a fluorocarbon fluid. Of particular interest was the effect of graphene-oxide platelets, dip-coated onto the heater surface, in enhancing the nucleate boiling heat transfer (BHT) rates and the critical heat flux (CHF) value. In the course of the pool boiling experiment, the primary focus was on the reduction mechanism of graphene oxide. The transition from hydrophilic to hydrophobic behavior of the graphene oxide-coated surface was captured, and the attendant effects on

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!