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Dissertations / Theses on the topic 'Cooling medium'

Author: Grafiati

Published: 3 June 2025

Last updated: 1 August 2025

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1

Kheniser, Issam E. "Film Cooling Experiments in a Medium Duration Blowdown Facility." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276540410.

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2

Thacker, John Edward. "Design of medium pressure nozzles for cooling towers." Thesis, Stellenbosch : Stellenbosch University, 1997. http://hdl.handle.net/10019.1/55448.

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Thesis (MScEng)--Stellenbosch University, 1997.<br>One copy microfiche.<br>ENGLISH ABSTRACT: This project concerns the investigation of parameters controlling the behaviour of full-cone spray nozzles of the type used in cooling towers. In the present study large medium pressure hollow and full cone nozzles were investigated. A literature survey provided insight into the relationships between the nozzle dimensions and their spray characteristics, while equations found in the literature were used to correlate the experimental data. It was found that the spray cone angle of hollow cone nozz

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3

Agyenim, Francis Boateng. "The development of medium temperature thermal energy storage for cooling applications." Thesis, University of Ulster, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436852.

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4

Morgan, Nathaniel Ray. "A porous medium for structural support and multiphase cooling of high-frequency conductors." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/16335.

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5

Cooke, Geoffrey Herbert. "Study of fluorocarbon liquid as a dielectric and cooling medium in fire resistant power transformers." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240032.

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6

Belaid, Ashur Belaid. "A six-chamber medium-to-high temperature refrigeration system for laboratory purposes." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2522.

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Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2017.<br>Food and water fuel and sustain life on earth. Since ancient times, their sourcing and preservation have been very important issues to humanity. In modern times, experimentation is a major step in analysing how cold storage problems in the medical and food science technology fields can be addressed. For investigating spoilage of new products and/or growth of pathogens in such cases, it is necessary to do experiments at different low temperatures for prolonged periods and check the effects. While this can

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7

Lochhaas, Cassandra Derrick. "Stellar Feedback in Galaxies, Its Impact on the Circumgalactic Medium, and the Importance of Radiative Cooling." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1562676332648711.

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8

Diehl, Steven. "The Hot Interstellar Medium in Normal Elliptical Galaxies." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1149262336.

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9

Davis, Shanon Marie. "Heat-Flux Measurements for a Realistic Cooling Hole Pattern and Different Flow Conditions." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1315013452.

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10

Boehler, Michael David. "Transient Aerothermodynamics of Flow Initialization for a Flat Plate Film Cooling Experiment in a Medium Duration Blowdown Wind Tunnel Facility." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1284767673.

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11

Kapalla, Alexej. "Simulace oteplení rozváděčů VN." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442798.

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This thesis focuses on the issue of heating of medium-voltage switchgears. The paper contains descriptions of the individual devices which the switchgear consists of. Furthermore, the paper examine the theoretical relations which describe the heating of the conductor. It also present the normative regulations regarding the heading of MV switchgears as well as specific impacts which influence the final temperature-rise. This is followed by chapters that describe the refining of a 3D model of specific switchgear for purposes of simulating temperature-rise, further followed by chapters that look

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12

Wang, Ye. "The Structure of Broad Line Region and the Effects of Cooling Function in Active Galactic Nuclei." UKnowledge, 2014. http://uknowledge.uky.edu/physastron_etds/19.

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Active Galactic Nuclei (AGNs) are the most mystic objects in the universe. They are usually very far away from our Galaxy, which means that they are ancient objects. They are also luminous and have unique features in their spectra. Studying AGNs helps understanding the early universe and the evolution of galaxies. This Dissertation aims to research the structure of AGNs and the cooling function in the AGNs environment. I first investigate what optical/ultraviolet spectroscopic features would be produced by Broad-line Region (BLR) clouds crossing our line of sight to the accretion disk, the sou

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13

Chevance, Mélanie. "Physical processes in the interstellar medium of the Magellanic Clouds." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC242/document.

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Le milieu interstellaire (MIS) joue un rôle important dans l'évolution des galaxies. Les radiations et vents stellaires, ainsi que les supernovae par exemple, sont à l'origine de nombreux processus ayant un impact sur les propriétés globales des galaxies. Cependant, l'efficacité des ces processus est liée aux propriétés et à la structure des différentes phases du MIS, et est souvent incertaine. Grace à la sensibilité et résolution accrues des nouveaux télescopes observant dans l'infrarouge lointain (FIR) et le submillimetrique (comme par exemple le Herschel Space Observatory, SOFIA et ALMA), i

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14

Marquez, Gonzalez Mayra. "Heat resistance and outgrowth of clostridium perfringens spores as affected by the type of heating medium, and heating and cooling rates in ground pork." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3173.

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15

Najmi, Hussain. "Selectivity of Porous Composite Materials for Multispecies mixtures : Application to Fuel Cells." Thesis, Bourges, INSA Centre Val de Loire, 2018. http://www.theses.fr/2018ISAB0001/document.

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L'utilisation de pile à combustible à bord d'un avion impose d'extraire des espèces légères (telles que l'hydrogène et les hydrocarbures légers) du combustible liquide qui est stocké et utilisé, éventuellement à des températures où se produit une pyrolyse du carburant. La porosité d’un matériau composite pourrait être utilisée pour filtrer les espèces sélectionnées. L'efficacité de séparation d’un matériau poreux dépend de deux facteurs qui sont: la perméance et la sélectivité.Ces facteurs sont souvent déterminés avec une configuration classique utilisant un échantillon en forme d’un disque d’

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16

Nickol, Jeremy B. "Heat Transfer Measurements and Comparisons for a Film Cooled Flat Plate with Realistic Hole Pattern in a Medium Duration Blowdown Facility." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1365421507.

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17

Polles, Fiorella Lucia. "Properties of the interstellar medium of the star-forming galaxy, IC10, at various spatial scales." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS276/document.

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Les propriétés du milieu interstellaire (MIS) influencent fortement l’environnement et les processus menant à la formation d’étoiles qui, à son tour, dicte l’évolution d’une galaxie. Les galaxies naines du Groupe Local sont de parfaits laboratoires pour comprendre comment le contenu en métaux (ou métallicité) du MIS affecte l’interaction entre le gaz, la poussière et les étoiles. Mon travail de thèse porte sur les propriétés physiques des régions HII et du gaz diffus ionisé de la galaxie naine IC10, de métallicité 1/3 solaire. La proximité de cette galaxie (d=700kpc) permet l’analyse du MIS à

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18

TORRES, WALMIR M. "Desenvolvimento de uma tecnica de medida de nivel em vasos de pressao utilizando sondas termicas e redes neurais artificiais." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11761.

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Made available in DSpace on 2014-10-09T12:55:30Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:07:16Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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19

Jessen, Wilhelm. "Particle image velocimetry measurements of film cooling flows /." Aachen : Mainz, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=017075640&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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20

Al-Aabidy, Qahtan. "Modelling of turbulent flow and heat transfer in porous media for gas turbine blade cooling." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/modelling-of-turbulent-flow-and-heat-transfer-in-porous-media-for-gas-turbine-blade-cooling(f7781d8e-bb1e-4bb7-a57e-4e77875ad6d6).html.

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This thesis focuses on the study of flow and heat transfer in porous media in both laminar and turbulent flow regimes, by using Volume Averaged Reynolds Navier Stokes (VARNS) approach. The main concern is to investigate the possibility of using porous media for the gas turbine blade cooling. Very recently, using this technique in blade cooling, particularly with internal cooling, has motivated many researchers due to an effective enhancement in the blade cooling. In this study turbulence is represented by using the Launder-Sharma low-Reynolds-number k-Îμ turbulence model, which is modified vi

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21

Sung, Hsiang-Chu, and 宋翔駒. "Heat Transfer of Jet Impingement Cooling with Porous Medium." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/08649717839664445050.

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碩士<br>國立交通大學<br>機械工程系所<br>105<br>Jet Impingement Cooling with porous medium was experimentally investigated using transient liquid crystal technique. In this experiment, porous medium was put inside the impingement channel. This jet impingement experiment was conducted using an orifice plate with 4×12 circular holes . The diameter of the hole is 0.5cm, and the jet-to-jet distance is 4 times the hole diameter. With the target-to-orifice distance of 3 times the hole diameter, we investigated the jet Reynolds numbers of 2500, 5100 to 7700. We proposed and compared some test condition when the por

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22

Choudhury, Prakriti Pal. "Cooling, heating and gas evolution in the circumgalactic medium." Thesis, 2019. https://etd.iisc.ac.in/handle/2005/5028.

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The Universe at large scales consists of gravitationally bound dark matter halos. Ordinary gas inside the halos emits and also absorbs the radiation from background sources leaving distinct signatures for multi-wavelength observations. Broadly, the gas is in three primary dynamical states: firstly, in-falling into the potential well of the halo; secondly, remains within the halo in (quasi)hydrostatic equilibrium until it radiatively cools; thirdly, gets ejected from the halo by strong out flows driven by a central black hole or stars. The gas within the halos and outside the central gala

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23

Lin, Ting-chun, and 林亭君. "Application of porous medium in PEM fuel cell cooling system." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/61391783873477956642.

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碩士<br>國立中央大學<br>能源工程研究所<br>100<br>Except water and power, proton exchange membrane fuel cell (PEMFC) also generates heat while it is on operating. In order to keep PEMFC working in low temperature condition (<80 。C), it is required to develop a cooling system to remove waste heat. This study is focused on air cooling method, because it has the advantage of avoiding ionic contamination problem in liquid cooling method. Moreover, metal foam is lightweight, has high thermal conductivity, and large surface area for heat exchange. This study is the first investigation on metal foam applied to PEMFC

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24

Mohapatra, Rajsekhar. "The role of stratifcation, turbulence and cooling in the intracluster medium." Phd thesis, 2022. http://hdl.handle.net/1885/268617.

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The intracluster medium (ICM) refers to the gas pervading the region between galaxies in a galaxy cluster. It comprises multiple temperature phases with a dominant hot phase at 10-100 million K and cooler atomic and molecular phases at around 10,000 K and around 10 K, respectively. It is intimately linked to the galaxies in the cluster through cycles of gas cooling and inflow into the central galaxy, and outflows into the ICM driven by active galactic nuclei (AGNs) and supernovae fed by this cooling gas. These feedback processes as well as galaxy-ICM interactions and cluster mergers drive turb

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25

Chen, Cheng-Yi, and 陳政逸. "A Study on Using Circulating Groundwater as Cooling Medium for Air Conditioning System." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/74572941648807205927.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>93<br>This research develops a system which uses circulating groundwater to cool down a heat exchanger of air conditioner installed in a well to replace commonly used cooling towers. The main topics studied is the relationship between the temperature of cooling water and the temperature of groundwater at the process of heat exchanging. The test results indicate that if air conditioner is running and the groundwater in the well is not circulating, the temperature of groundwater will arise rapidly. However, once the groundwater starts circulating; the temperature of gr

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26

"Thermal Performance of PNIPAm as an Evaporative Cooling Medium within a Ventilated Wall Cavity." Master's thesis, 2018. http://hdl.handle.net/2286/R.I.50596.

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abstract: Learning from the anatomy of leaves, a new approach to bio-inspired passive evaporative cooling is presented that utilizes the temperature-responsive properties of PNIPAm hydrogels. Specifically, an experimental evaporation rate from the polymer, PNIPAm, is determined within an environmental chamber, which is programmed to simulate temperature and humidity conditions common in Phoenix, Arizona in the summer. This evaporation rate is then used to determine the theoretical heat transfer through a layer of PNIPAm that is attached to an exterior wall of a building within a ventilated cav

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27

Lingner, Nicole Renate. "The Faint Intergalactic-Medium Redshifted Emission Balloon: FIREBall-2 Scientific Camera and Cooling System." Thesis, 2017. https://thesis.library.caltech.edu/10303/1/Nicole%20Thesis%20June.pdf.

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<p>The FIREBall-2 instrument provides a means of investigating both the processes responsible for building cosmic structure and the galaxies that trace it. By studying the inflow and outflow of gaseous hydrogen, we can better explain galaxy formation and evolution. Each individual galaxy lies within a dense gaseous region called the circumgalactic medium (CGM), itself surrounded by the diffuse intergalactic medium (IGM). Thin gaseous filaments connect galaxies to each other in space and time and they can be found at nodes of these filaments at the center of dark matter halos.</p> <p>This la

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28

Li, Jia-Hsun, and 李家薰. "Cooling Effect of Sedum Vegetation and Waste Fiber Culture Medium Used as Extensive Green Roof." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/43197158699162544081.

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碩士<br>逢甲大學<br>土地管理所<br>101<br>Greening on roofs that are not totally used can create a good cooling effect and mitigate the urban heat island effect. Considering the load capacity of roofs and ecological protection, this study aims at the composition of the waste fiber culture medium for an extensive green roof. After the culture mediums are evaluated for formability, sedum vegetation is then grown with them on a roof. When the plants cover 80% of the culture mediums, the temperature fluctuation values above and below the plants and mediums are measured and recorded. The values are statistical

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29

Chia-LinChang and 張嘉麟. "Effect of Cooling Medium and Magnetic Field on the Microstructure of Directionally Solidified Pb-Sn Alloys." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/gq354b.

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30

(5929763), Vaidehi Y. Hoshing. "Augmented Framework for Economic Viability-Based Powertrain Design and Emissions Analysis of Medium/Heavy-Duty Plug-in Hybrid Electric Vehicles." Thesis, 2019.

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<div>Plug-in hybrid electric vehicles (PHEVs) are being considered as an alternative to conventional medium-duty (MD) and heavy-duty (HD) commercial vehicles to reduce fuel consumption and tailpipe emissions. Lithium ion batteries, which are used in PHEVs due to their high energy density, are expensive. The battery contributes significantly towards the life-cycle cost of MD/HD PHEVs, as these vehicles, due to high mass and aggressive battery usage, require multiple battery replacements over their lifetime. Smaller batteries increase the fuel consumption and need more replacements, while bigge

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