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Dissertations / Theses on the topic 'TG with hydrogen cooling'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

PERES, FERNANDO ANTONIO SERRAPIO. "COOLING WATER TREATMENT USING HYDROGEN PEROXIDE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2006. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8889@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>PERÓXIDOS DO BRASIL<br>O tratamento de águas de resfriamento normalmente é feito com a adição de cloro, porém este produto apresenta algumas desvantagens em sua aplicação. Como alternativa ao cloro, algumas indústrias no Brasil e no exterior estão começando a utilizar outros biocidas, dentre estes o peróxido de hidrogênio, um poderoso oxidante que apresenta forte ação biocida. O objetivo deste trabalho foi comparar a eficiência do cloro e do peróxido de hidrogênio como biocidas em diferentes condições, através de testes em

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2

Weber, Fabian. "Optical Analysis of the Hydrogen Cooling Film in High Pressure Combustion Chambers." Thesis, Luleå tekniska universitet, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76872.

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For performance optimisation of modern liquid cryogenic bipropellant rocket combustion chambers, one component which plays an important role in reducing the wall side heat flux, is the behaviour of the cooling film. At the Institute of Space Propulsion of the German Aerospace Center (DLR) in Lampoldshausen, hot test runs have been performed using the experimental combustion chamber BKM, to investigate the wall side heat flux which is -- among other factors -- dependent on cooling film properties. To gain more insight into the film behaviour under real rocket-like conditions, optical diagnostic

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3

Schnitzler, Harald. "Development of an experiment for trapping, cooling, and spectroscopy of molecular hydrogen ions." [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9424100.

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4

Reed, Robert Joseph. "Study of the feasibility and energy savings of producing and pre-cooling hydrogen with a 5-kW ammonia based combined power/cooling cycle." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0009201.

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5

Doyle, John Morrissey. "Energy distribution measurements of magnetically trapped spin polarized atomic hydrogen : evaporative cooling and surface sticking." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13860.

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6

Wilson, Earle Anthony. "Investigation of renewable, coupled solar-hydrogen fuel generation with thermal management systems suitable for equatorial regions." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4508.

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Solar Energy and Hydrogen (energy carrier) are possible replacement options for fossil fuel and its associated problems of availability and high prices which are devastating small, developing, oil-importing economies. But a major drawback to the full implementation of solar energy, in particular photovoltaic (PV), is the lowering of conversion efficiency of PV cells due to elevated cell temperatures while in operation. Also, hydrogen as an energy carrier must be produced in gaseous or liquid form before it can be used as fuel; but its‟ present major conversion process produces an abundance of

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7

Singh, Sajan B. "A Numerical Study of High Temperature and High Velocity Gaseous Hydrogen Flow in a Cooling Channel of a NTR Core." ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1766.

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Two mathematical models (a one and a three-dimensional) were adopted to study, numerically, the thermal hydrodynamic behavior of flow inside a single cooling channel of a Nuclear Thermal Rocket (NTR) engine. The first model assumes the flow in the cooling channel to be one-dimensional, unsteady, compressible, turbulent, and subsonic. The working fluid (GH2) is assumed to be compressible. The governing equations of the 1-D model are discretized using a second order accurate finite difference scheme. Also, a commercial CFD code is used to study the same problem. Numerical experiments, using both

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8

Yue, Xin. "Evaluation of Heat-affected Zone Hydrogen-induced Cracking in High-strength Steels." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374109768.

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9

Makaya, Advenit. "On the effect of nitrogen, hydrogen and cooling rate on the solidification and pore formation in Fe-base and Al-base alloys." Doctoral thesis, Stockholm : Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4428.

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10

Putois, Tamara. "Etude du traitement de désinfection des eaux de refroidissement par le couplage H2O2/UV : Application à une tour aéroréfrigérante." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00780333.

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Les légionelles sont un enjeu de santé publique majeur car ces bactéries sont responsables des cas de légionellose, parfois mortels. Les tours aéroréfrigérantes (TAR) peuvent être incriminées car pouvant potentiellement émettre des aérosols contaminés. Un traitement de désinfection de ces eaux est donc nécessaire. Cependant les techniques actuelles conduisent très souvent à des injections importantes de réactifs induisant des rejets écotoxiques dans l'environnement qu'il est nécessaire de limiter. L'application du traitement d'oxydation avancée H2O2/UV - considéré comme innovant pour ce domain

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11

Mousavioun, Payam. "Properties of lignin and poly(hydroxybutyrate) blends." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/46668/1/Payam_Mousavioun_Thesis.pdf.

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The Queensland University of Technology (QUT) allows the presentation of a thesis for the Degree of Doctor of Philosophy in the format of published or submitted papers, where such papers have been published, accepted or submitted during the period of candidature. This thesis is composed of Seven published/submitted papers and one poster presentation, of which five have been published and the other two are under review. This project is financially supported by the QUTPRA Grant. The twenty-first century started with the resurrection of lignocellulosic biomass as a potential substitute for petroc

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12

Supriya, Pawar V. "Fabrication of precipitation-hardened aluminum microchannel cooling plates for adsorption-based hydrogen storage systems." Thesis, 2013. http://hdl.handle.net/1957/38204.

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The need for clean and renewable fuel such as hydrogen is driven by a growing worldwide population and increasing air pollution from fossil fuels. One of the major barriers for the use of hydrogen in automotive industry is the storage of hydrogen. Physisorption is the most promising storage technique due to its high storage density, reversibility and rapid sorption kinetics besides being safe and volume-efficient. A major challenge for physisorption is the need to manage the heat of adsorption at cryogenic temperatures. In this thesis, a 6061 aluminum microchannel cooling plate is designed to

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13

Schnitzler, Harald [Verfasser]. "Development of an experiment for trapping, cooling, and spectroscopy of molecular hydrogen ions / von Harald Schnitzler." 2001. http://d-nb.info/962724297/34.

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14

Steigleder, Leif J. "A microchannel-based thermal management system for hydrogen storage adsorbent beds." Thesis, 2012. http://hdl.handle.net/1957/30357.

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Hydrogen has been shown to be a promising replacement for fossil fuels for use in light duty vehicles because it is a clean, renewable and plentiful resource with a high gravimetric energy density. However, in order to obtain an acceptable volumetric energy density, densification of the hydrogen is required. Adsorptive materials have been shown in the literature to increase volumetric and gravimetric storage densities. A major issue with adsorptive storage is that the adsorption process generates heat and optimal storage conditions are at temperatures below 100 K at pressures up to 50 atm. The

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15

Borkowski, Krzysztof. "Experimental study and theoretical modelling of pipeline girth welding." Thesis, 2015. http://hdl.handle.net/2440/103735.

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The thermal field induced by arc welding has been the subject of numerous experimental, analytical and numerical studies in the past. However, few studies have focused on the effects of the local geometry and pipeline welding procedure on the transient thermal field at or near the vicinity of the weldline. The local geometry and welding procedures are often simplified in computational or analytical studies and normally disregarded in quantitative assessments. The objective of this thesis is to evaluate the significance of these effects in order to understand their possible influence on the wel

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16

Libson, Adam Alexander. "General methods of controlling atomic motion : experiments with supersonic beams as a source of cold atoms." Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-08-6035.

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This dissertation discusses several recently developed experimental techniques for controlling the motion of neutral atoms. While laser cooling and evaporative cooling have been extremely successful and have been in widespread use for many years, these techniques are only applicable to a few atomic species. Supersonic beams provide a general method of producing cold atoms in the co-moving frame, but their speeds are typically several hundreds of meters per second in the lab frame. Methods to slow and control atoms cooled by supersonic expansion are detailed. A method for controlling the veloci

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17

Kuhr, Samuel Houston. "An Electrolytic Method to Form Zirconium Hydride Phases in Zirconium Alloys with Morphologies Similar to Hydrides Formed in Used Nuclear Fuel." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-10826.

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An electrolytic cell was designed, built, and tested with several proof-of-concept experiments in which Zircaloy material was charged with hydrogen in order to generate zirconium hydride formations. The Electrolytic Charging with Hydrogen and a Thermal Gradient (ECH-TG) system has the ability to generate static 20°C to 120°C temperatures for a H2SO4 and H2O bath for isothermal experiment conditions. This system was designed to accommodate a molten salt bath in future experiments to achieve higher isothermal temperatures. Additionally, the design accommodates a cartridge heater, which when plac

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