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Dissertations / Theses on the topic 'Fluido e temperatura'

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Published: 4 June 2021
Last updated: 13 February 2022

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1

Martins, Vitor Escher. "Instabilidade dinâmica de cascas cilíndricas laminadas submetidas a fluido e temperatura." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/4373.

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Submitted by Cássia Santos (cassia.bcufg@gmail.com) on 2015-03-27T12:06:51Z No. of bitstreams: 2 Dissertação - Vitor Escher Martins - 2014.pdf: 13588446 bytes, checksum: 9cceb42b5d24095bc392dc37f17c9386 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-03-27T15:28:00Z (GMT) No. of bitstreams: 2 Dissertação - Vitor Escher Martins - 2014.pdf: 13588446 bytes, checksum: 9cceb42b5d24095bc392dc37f17c9386 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br
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2

Medeiros, Junior Flavio. "Comportamento da temperatura do fluido infetado no reservatorio em operações de aciclificação de matriz." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264312.

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Orientador: Osvair Vidal Trevisan<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-07-21T20:38:31Z (GMT). No. of bitstreams: 1 MedeirosJunior_Flavio_M.pdf: 5849713 bytes, checksum: d198866e74ce5c49813b449117b5005b (MD5) Previous issue date: 1996<br>Resumo: As operações de Acidificação de Matriz são usadas com freqüência para remoção do dano à formação causado por partículas sólidas de minerais que obstruem parcialmente o espaço poroso nas proximidades do poço. A cinética da reação química entre o ácido e os mi
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FOUCRIER, MICHEL J. "Determinacao experimental da velocidade de um fluido pela analise espectral das flutuacoes de temperatura." reponame:Repositório Institucional do IPEN, 1987. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9897.

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Made available in DSpace on 2014-10-09T12:32:35Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:08:57Z (GMT). No. of bitstreams: 1 01536.pdf: 1546999 bytes, checksum: 6f67a3de9c8959c9d9b4408584d2f8fb (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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4

Lopes, Daniel Silveira. "Simulação de um armazenamento sólido de alta temperatura." Master's thesis, Universidade de Évora, 2018. http://hdl.handle.net/10174/23354.

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A dissertação apresentada consiste na modelação de um sistema de armazenamento de energia em betão que utiliza sais fundidos como fluido de transferência de calor. Foi utilizado um método das diferenças finitas para a análise dos diferentes componentes do sistema de armazenamento e de transferência de calor, tendo sido este posteriormente aplicado em MATLAB e validado com casos já estudados. Neste software foi também otimizado um módulo com base nos comportamentos analisados bem como capacidades energéticas e custos do betão para posterior aplicação na Évora Molten Salt Platform; Abstract: Hi
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5

Teles, Márcio Lembi. "Análise fatorial de fluido viscoplástico dependente da temperatura através de um método estabilizado de elementos finitos." Universidade do Vale do Rio dos Sinos, 2016. http://www.repositorio.jesuita.org.br/handle/UNISINOS/5945.

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Submitted by Silvana Teresinha Dornelles Studzinski (sstudzinski) on 2016-11-17T15:28:54Z No. of bitstreams: 1 Márcio Lembi Teles_.pdf: 1859021 bytes, checksum: 5dc2746be44c5f2b865c68ec0b4c0db0 (MD5)<br>Made available in DSpace on 2016-11-17T15:28:54Z (GMT). No. of bitstreams: 1 Márcio Lembi Teles_.pdf: 1859021 bytes, checksum: 5dc2746be44c5f2b865c68ec0b4c0db0 (MD5) Previous issue date: 2016-09-16<br>Nenhuma<br>Este trabalho apresenta uma análise fatorial, através de fluidodinâmica computacional, do escoamento e transferência de calor para fluidos viscoplásticos a partir de um cilindro c
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Leal, Shirlen Viana. "ANEMÔMETRO BASEADO EM SENSOR TERMO-RESISTIVO OPERANDO A TEMPERATURA CONSTANTE COM AJUSTE AUTOMÁTICO DE FAIXA DINÂMICA." Universidade Federal do Maranhão, 2010. http://tedebc.ufma.br:8080/jspui/handle/tede/445.

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Made available in DSpace on 2016-08-17T14:53:11Z (GMT). No. of bitstreams: 1 Shirlen Viana Leal.pdf: 556717 bytes, checksum: 0c051baae450dc752c45ceb9e82ddd19 (MD5) Previous issue date: 2010-06-04<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The thermoresistive - based hot-wire anemometer operating at a controlled temperature is a classical architecture that is vastly found in the literature. Nevertheless, this architecture may present a problem due to dynamic range variation of its output voltage for significant variation of the fluid temperature. In this work, the cla
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7

Silveira, Lucas Ezequias da Silva. "Análise experimental da ebulição em canais de diâmetro reduzido: efeitos do diâmetro, do fluido e da temperatura." Universidade do Vale do Rio dos Sinos, 2018. http://www.repositorio.jesuita.org.br/handle/UNISINOS/7296.

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Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2018-09-24T18:18:53Z No. of bitstreams: 1 Lucas Ezequias da Silva Silveira_.pdf: 2681603 bytes, checksum: bdf77c94ace5cc8dc7bd13716275dc35 (MD5)<br>Made available in DSpace on 2018-09-24T18:18:53Z (GMT). No. of bitstreams: 1 Lucas Ezequias da Silva Silveira_.pdf: 2681603 bytes, checksum: bdf77c94ace5cc8dc7bd13716275dc35 (MD5) Previous issue date: 2018-05-11<br>CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>A utilização de trocadores de calor com canais de diâmetro reduzido vem crescendo devido à demanda por trocad
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Sanz, Kock Carlos. "Evaluación experimental de una instalación de producción de frío en cascada con CO2 como fluido de baja temperatura." Doctoral thesis, Universitat Jaume I, 2014. http://hdl.handle.net/10803/667034.

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En la presente tesis doctoral se analiza experimentalmente una instalación de doble etapa indirecta o cascada que opera con CO2 como fluido de baja temperatura, debido a que este sistema se presenta como uno de los posibles candidatos a utilizar en la refrigeración comercial centralizada, ya que cumple con la F‐gas, presenta rendimientos energéticos superiores a otras alternativas y el fluido distribuido a los servicios a baja temperatura es de bajo GWP. El estudio realizado parte de un análisis teórico sobre la selección del fluido refrigerante a utilizar en el ciclo de alta temperatur
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Martins, Erick Finzi. "Concepção de bancada para geração de condições conhecidas e controladas de vazão mássica de fluido de refrigeração." Florianópolis, SC, 2011. http://repositorio.ufsc.br/xmlui/handle/123456789/95464.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnologico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2011<br>Made available in DSpace on 2012-10-26T02:02:41Z (GMT). No. of bitstreams: 0<br>Ensaios de desempenho de compressores de refrigeração são importantes para avaliar características energéticas do compressor, tais como capacidade de refrigeração e consumo. Essas características são indicadores de eficiência desses produtos. Os resultados desses ensaios são geralmente obtidos pela indústria através de bancadas específicas. Tais bancadas são p
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10

Urbina, Fuentes Javier Renato. "Estudio Comparativo Técnico-Económico de Sistemas de Calentamiento de Fluidos Basados en Resistencias Eléctricas, Inducción Magnética y Calderas Diésel." Tesis, Universidad de Chile, 2010. http://www.repositorio.uchile.cl/handle/2250/101169.

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El presente trabajo de Tesis es un estudio comparativo técnico-económico de tres sistemas de calentamiento de fluidos basados en resistencias eléctricas, calderas diésel e inducción magnética. El objetivo principal de este trabajo es establecer las ventajas comparativas de cada sistema de calentamiento de fluidos de pasada, verificando bajo qué condiciones un sistema resulta superior a los otros. Para ello se desarrolló una metodología de comparación, la que requirió determinar las características más importantes de cada sistema. Dicha metodología toma en cuenta las características del flui
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Reges, Jos? Edenilson Oliveira. "Medi??o das vaz?es e an?lise de incerteza em po?os injetores de ?gua multizonas a partir do perfil de temperatura do fluido." PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE PETR?LEO, 2016. https://repositorio.ufrn.br/jspui/handle/123456789/22339.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-03-17T19:32:33Z No. of bitstreams: 1 JoseEdenilsonOliveiraReges_TESE.pdf: 5841325 bytes, checksum: 2ead9ffcd013a5ed21850074ab97c30f (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-03-18T00:04:04Z (GMT) No. of bitstreams: 1 JoseEdenilsonOliveiraReges_TESE.pdf: 5841325 bytes, checksum: 2ead9ffcd013a5ed21850074ab97c30f (MD5)<br>Made available in DSpace on 2017-03-18T00:04:04Z (GMT). No. of bitstreams: 1 JoseEdenilsonOliveiraReges_TESE.pdf: 5841325 bytes, checksum: 2ead9ffc
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Álvarez, Álvarez Sebastián Ignacio. "Análisis exergético de sistemas de almacenamiento de energía eléctrica a gran escala mediante bombas de calor de alta temperatura, utilizando CO2 como fluido de trabajo." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/169228.

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Memoria para optar al título de Ingeniero Civil Mecánico<br>De acuerdo a la necesidad de mitigar la variabilidad de producción de energía eléctrica mediante recursos renovables de naturaleza variable (energía solar y eólica), se analiza la factibilidad técnica de utilizar un sistema de almacenamiento de energía mediante bombeo de calor (Pumped Heat Energy Storage o PHES) utilizando CO2 como fluido de trabajo, lo que permite alcanzar altas eficiencias con bajo riesgo asociado al ciclo y un menor potencial de contaminación ambiental en comparación a otros fluidos de trabajo. El funcionamiento de
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13

C?mara, Paulo C?sar Fran?a da. "Uma nova proposta de fluidos de perfura??o aquosos ? base de pol?meros vin?licos e bentonita para po?os de alta temperatura e press?o." Universidade Federal do Rio Grande do Norte, 2016. http://repositorio.ufrn.br/handle/123456789/21036.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-07-22T15:10:02Z No. of bitstreams: 1 PauloCesarFrancaDaCamara_DISSERT.pdf: 1632237 bytes, checksum: 8e0cfc36c6d0195008822612bbadae28 (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-07-27T19:54:25Z (GMT) No. of bitstreams: 1 PauloCesarFrancaDaCamara_DISSERT.pdf: 1632237 bytes, checksum: 8e0cfc36c6d0195008822612bbadae28 (MD5)<br>Made available in DSpace on 2016-07-27T19:54:25Z (GMT). No. of bitstreams: 1 PauloCesarFrancaDaCamara_DISSERT.pdf: 1632237 bytes, checksum: 8e0cf
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Álvarez, Bermúdez Maria Eugenia. "Estudio teórico y experimental de la solución acuosa de nitratos de litio, sodio y potasio como fluido de trabajo en enfriadoras de agua de absorción con accionamiento a alta temperatura." Doctoral thesis, Universitat Rovira i Virgili, 2013. http://hdl.handle.net/10803/119541.

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A pesar de las ventajas que ofrecen los sistemas de refrigeración por absorción, su utilización está muy por debajo de su potencial técnico y económico. El fluido de trabajo convencional H2O/LiBr presenta serios problemas de corrosión y descomposición térmica a temperaturas mayores de 150ºC. Por este motivo, se propone el desarrollo de absorbentes que no sean corrosivos, sean estables térmicamente y permitan aprovechar al máximo el nivel de temperatura de fuentes de calor de alta temperatura. El objetivo de este trabajo es estudiar la solución acuosa de: LiNO3+KNO3+NaNO3 con composición
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Montes, Roger Otavio Pires. "Modelo de baixa dimensão para análise das vibrações não lineares de cascas cilíndricas com gradação funcional." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/4741.

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Submitted by Cláudia Bueno (claudiamoura18@gmail.com) on 2015-10-22T19:24:12Z No. of bitstreams: 2 Dissertação - Roger Otávio Pires Montes - 2015.pdf: 8169771 bytes, checksum: e580ffb280dfa5136f41ab38cf0aec4e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-10-23T11:04:48Z (GMT) No. of bitstreams: 2 Dissertação - Roger Otávio Pires Montes - 2015.pdf: 8169771 bytes, checksum: e580ffb280dfa5136f41ab38cf0aec4e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b8630
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Guilleumas, Montserrat. "Nucleation and cavitation in liquid helium." Doctoral thesis, Universitat de Barcelona, 1995. http://hdl.handle.net/10803/667593.

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Las transiciones de fase no siempre ocurren bajo condiciones de equilibrio. Un fluido puede ser conducido a un estado metastable. A pesar de ser internamente estable, existe otra configuración con un potencial termodinámico menor, por tanto energéticamente más favorable y a la cual tenderá el sistema. Esta transición está bloqueada por una barrera termodinámica que puede ser superada con resultado de la formación y crecimiento de pequeños nucleos de la nueva fase estable en la fase metastable. Este proceso se llama nucleación (formación de gotas en un vapor sub-enfriado) o cavitacion (burbujas
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Herculano, Juliana Cardoso. "Comportamento da temperatura obtida por radar meteórico na região tropical durante o Ciclo Solar 23." Universidade Estadual da Paraíba, 2015. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2286.

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Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2016-04-27T12:51:25Z No. of bitstreams: 1 PDF - Juliana Cardoso Herculano.pdf: 2901982 bytes, checksum: 1eb37789ca96855b4c63bd56d9a06682 (MD5)<br>Made available in DSpace on 2016-04-27T12:51:25Z (GMT). No. of bitstreams: 1 PDF - Juliana Cardoso Herculano.pdf: 2901982 bytes, checksum: 1eb37789ca96855b4c63bd56d9a06682 (MD5) Previous issue date: 2015-05-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Temperature values around 90 km height were used to investigate a possible relationship between the variations of
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Reinheimer, Letícia. "Medição da viscosidade de óleos newtonianos por reômetro óptico em diferentes temperaturas." reponame:Repositório Institucional da UCS, 2014. https://repositorio.ucs.br/handle/11338/940.

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Efetuou-se, de forma inédita, a avaliação da viscosidade de dois óleos Newtonianos em velocidades distintas de escoamento (1000rpm e 1500rpm) e em função da temperatura (24ºC a 50ºC), através de um método de reologia a laser, que consiste num interferômetro óptico acoplado a um spinner. Para a obtenção dos dados experimentais desenvolveu-se um sistema de aquecimento, o qual foi acoplado ao spinner, garantindo assim a estabilidade térmica durante o processo. Os dados experimentais obtidos através do método de reologia a laser corroboraram com o modelo de Emslie, Bonner e Peck (EBP), considerand
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Sancet, Aitor. "Study of heat transfer and flow pattern in a multiphase fuel oil circular tank." Thesis, University of Gävle, University of Gävle, Department of Technology and Built Environment, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-4926.

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<p>This is a thesis work proposed by Sweco System in order to carry out a study related to the heating system of a circular fuel oil storage tank or cistern. The study tank is a 23m diameter and 18m height with a storage capacity of around 7500m3 of Eo5 heavy fuel oil. The content ought to be at a minimum storage temperature of 50ºC so that the fuel oil is fluid enough and operation labors can be adequately performed. In fact, these types of heavy fuel oils have fairly high viscosities at lower temperatures and the heating and pumping system can be compromised at temperatures below the pour po
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Jaberansari, Ahmad. "The variation of breakdown voltage with temperature for several low-flammability transformer fluids and building of an optimal design using one fluid." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303754.

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Martins, Paula Cristina Ribeiro. "Dimensionamento de tubagem de altas temperaturas para a Évora Molten Salt Platform." Master's thesis, Universidade de Évora, 2017. http://hdl.handle.net/10174/21341.

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Esta dissertação consiste no dimensionamento de uma tubagem usada para transporte de fluidos de transferência de calor a altas temperaturas, nomeadamente sais fundidos. A abordagem feita a nível analítico enfoca sobretudo na análise de flexibilidade, seguindo metodologias como a de S.W.Spielvogel, Vigas em balanço guiadas e Grinnel Corporation. Foram definidas algumas situações de traçado no sentido de perceber qual a melhor configuração para a Plataforma de Sais Fundidos de Évora. Seguidamente recorreu-se ao software comercial CAESAR II para dimensionar a tubagem. A seguinte dissertação compr
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Petrauskas, Nerijus. "Stabdžių skysčių eksploatacinių savybių tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_141111-50074.

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Tyrimo tikslas – nustatyti stabdžių skysčio eksploatacinių rodiklių kitimą automobiliuose su senu ir automobiliuose su naujai užpiltu stabdžių skysčiu, atsižvelgiant į Lietuvos sąlygas ir automobilių eksploatavimą. Tyrimai atlikti su keturiais automobiliais, dviejuose automobiliuose skystis buvo nežinomas, o likusiuose pakeistas nauju. Atsižvelgiant į eksploatacijos ir oro sąlygas, bei automobilių amžių, gavome tokius teiginius.Aplinkos temperatūrai nukritus žemiau 0 °C, vandens kiekis stabdžių skystyje didėja, o skysčio virimo temperatūra mažėja.Nustatyta, didesnis vandens kiekis susikaupė to
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Izgec, Bulent. "Transient fluid and heat flow modeling in coupled wellbore/reservoir systems." Thesis, [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2801.

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Chaliche, Majed. "Contribution a l'etude de la conductivite thermique des fluides complexes en presence d'une vitesse de cisaillement : realisation d'un appareillage specifique." Nantes, 1988. http://www.theses.fr/1988NANT2013.

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On propose un appareillage de mesure avec temperature maximale 70**(o)c. La mesure de la conductivite thermique en fonction de la vitesse de cisaillement pour des fluides de viscosite differentes permet de fixer la valeur limite du parametre r=2,10**(-2) au-dela de laquelle on ne peut plus utiliser le dispositif. La dissipation visqueuse au sein du fluide qui s'ajoute au flux transmis par conduction est quantifiee par le nombre de brinkman. On a montre que l'on doit apporter une correction a la mesure de la conductivite apparente pour mettre au point une analyse theorique du champ thermique et
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Molyneaux, Glenn Arthur. "Resorption cycle heat pump with ammonia-water working fluid." Thesis, University of Ulster, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326335.

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Esteves, Jacinto da Silva. "Estudo de propriedades ópticas não-lineares de cristal líquido dopado com corante em função da temperatura." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/43/43133/tde-05032002-142325/.

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Com o objetivo de estudar os efeitos provocados pela adição de um corante em um cristal líquido termotrópico (CL), pesquisamos neste trabalho a influência da temperatura na reorientação das moléculas deste composto, bem como o índice de refração e a absorção não-linear, devido à presença de um campo eletromagnético. O CL estudado apresenta a reorientação de suas moléculas na presença de luz polarizada. Esta reorientação se deve à polarização provocada pelo campo eletromagnético da luz incidente nas moléculas do CL. O torque, que ocasiona tal reorientação, é denominado torque óptico Gammaopt. Q
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Linke, Gunnar Torsten. "Eigenschaften fluider Vesikeln bei endlichen Temperaturen." Phd thesis, Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2005/583/.

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In der vorliegenden Arbeit werden die Eigenschaften geschlossener fluider Membranen, sogenannter Vesikeln, bei endlichen Temperaturen untersucht. Dies beinhaltet Betrachtungen zur Form freier Vesikeln, eine Untersuchung des Adhäsionsverhaltens von Vesikeln an planaren Substraten sowie eine Untersuchung der Eigenschaften fluider Vesikeln in eingeschränkten Geometrien. Diese Untersuchungen fanden mit Hilfe von Monte-Carlo-Simulationen einer triangulierten Vesikeloberfläche statt. Die statistischen Eigenschaften der fluktuierenden fluiden Vesikeln wurden zum Teil mittels Freier-Energie-Profile an
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Felis, Carrasco Francisco Ignacio. "Instalación y Pruebas de un Sistema de Medición de Velocidad por LDV (Laser Doppler Velocimetry)." Tesis, Universidad de Chile, 2009. http://www.repositorio.uchile.cl/handle/2250/103561.

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Autorizada por el autor, pero con restricción para ser publicada a texto completo hasta el año 2014<br>El principal objetivo de este trabajo de título fue instalar un sistema de medición de velocidades de flujo en fluidos por anemometría láser Doppler (LDV). Esto se realizó en el marco del proyecto Fondecyt N°1085015, cuyos estudios apuntan a la caracterización de los flujos de transporte de calor y momentum a través de dispositivos de cortinas de aire doble jet-doble flujo. Parte de estos estudios se realizan en un montaje experimental, el cual simula el calor generado por un incendio en un t
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Sabino, Luana Araujo 1984. "Estudo da distribuição da temperatura em instalações para a criação de fêmeas suínas em fase de gestação com o uso da fluidodinâmica computacional (CFD)." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256738.

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Orientador: Daniella Jorge de Moura<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola<br>Made available in DSpace on 2018-08-27T21:38:28Z (GMT). No. of bitstreams: 1 Sabino_LuanaAraujo_D.pdf: 5594290 bytes, checksum: 53aedcae8886f70448b204ed245f3d66 (MD5) Previous issue date: 2015<br>Resumo: Um dos principais problemas no interior de instalações de criação animal é o controle do ambiente por meio ventilação, sendo de grande importância para a qualidade aérea e conforto térmico de verão e inverno, principalmente em regiões de clima tropical. O uso de té
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Lasfargues, Mathieu. "Nitrate based high temperature nano-heat-transfer-fluids : formulation & characterisation." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/7531/.

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This work relates to the development of high temperature heat-transfer-fluid with enhanced specific heat capacity using nano-particle additives. A eutectic mixture of nitrate (60 wt% NaNO3 & 40 wt% KNO3) was produced through ball-milling and characterised on DSC, TGA, Rheometer. The results obtained showed that the salt mixture melted at 221°C with a heat of fusion of 97 J/g. Onset of melting was seen at 215°C whilst crystallisation started at 219°C, reaching a solid state below 217°C with an enthalpy of 97 J/g. Displaying very little overcooling, the salt showed specific heat capacity of 1.41
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Paula, Junior Rubens Ribeiro de. "Modelagem de controle de poço com fluidos de perfuração não aquosos e estudos de casos." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263123.

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Orientador: Paulo Roberto Ribeiro<br>Dissertação (mestrado) - Universidade Estadual de Campinas. Faculdade de Engenharia Mecanica e Instituto de Geociencias<br>Made available in DSpace on 2018-08-12T18:02:11Z (GMT). No. of bitstreams: 1 PaulaJunior_RubensRibeirode_M.pdf: 2205711 bytes, checksum: 8d99ae4553a735e11f7c7662c3878d30 (MD5) Previous issue date: 2008<br>Resumo: O trabalho apresenta uma revisão da literatura sobre poços HPHT, abordando o desafio na construção dos mesmos, com ênfase no aspecto de segurança de poço. Do ponto de vista de desenvolvimento, o trabalho envolveu a implementa
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32

Harris, Richard. "The modelling and simulation of temperature effects in hydraulic systems." Thesis, University of Bath, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256905.

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33

Firestone, Millicent Anne 1962. "Supercritical fluids as media for nucleation and growth processes for high temperature superconductors." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276849.

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Supercritical carbon dioxide was explored as a medium for nucleation and growth processes for ceramic oxide superconductors. The high temperature superconductor examined, YBa₂Cu₃O₇₋ₓ (YBC), was found to be stable upon limited exposure to CO₂. The solubility of the compound was studied in the region near the critical point using spectrophotometry. The species solubilized was indirectly identified by elemental analysis. Preliminary studies on the potential of the medium for metastable synthesis, comminution, and crystallization were conducted and showed promise for further development.
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Schneider, Alex Joseph. "Computational Modeling of Total Temperature Probes." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51550.

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A study is presented to explore the suitability of CFD as a tool in the design and analysis of total temperature probes. Simulations were completed using 2D axisymmetric and 3D geometry of stagnation total temperature probes using ANSYS Fluent. The geometric effects explored include comparisons of shielded and unshielded probes, the effect of leading edge curvature on near-field flow, and the influence of freestream Mach number and pressure on probe performance. Data were compared to experimental results from the literature, with freestream conditions of M=0.3-0.9, p_t=0.2-1 atm, T_t=300-11
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Galloway, Stuart D. R. "Ambient temperature and exercise capacity : effects of substrate and fluid provision." Thesis, University of Aberdeen, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338331.

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This series of studies began with an examination of the effects of ambient temperature (4°C-31°C) on exercise capacity at approximately 70% of VO<sub>2max</sub>. In this first study, exercise capacity was greatest at 11°C (93.5(16.4) min) and shortest at 31°C (51.6(10.5) min) with intermediate exercise times at 4°C (81.4(27.2) min) and 21°C (81.2(16.3) min). In the trial at 31°C, T<sub>re</sub>, T<sub>sk</sub>, HR, RPE, and sweat rate were all significantly higher and total CHO oxidation was significantly lower than during any other trial. At 21°C T<sub>re</sub>, T<sub>sk</sub>, and sweat rate
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36

Reid, Remington R. "Microwave Emission and Electron Temperature in the Maryland Centrifugal Experiment." Thesis, University of Maryland, College Park, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3590773.

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<p> The use of two magnetised plasma waves as electron temperature diagnostics for the Maryland centrifugal ecperiment (MCX) are explored. First, microwave emission in the whistler mode is examined and ultimately found to be a poor candidate for diagnostic purposes owing to reflections from elsewhere in the plasma confusing the signal. Second, the electron Bernstein wave is found to offer promise as means to measure the radial electron temperature profile. Several numeric codes are developed to analyze the observed microwave emission and calculate the electron temperature profile. Measurements
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NADELLA, Venkata Raghurama Swaroop. "CFD Simulation of MQL with low temperature and high-pressure coolant." Thesis, KTH, Industriell produktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-244417.

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Att använda stora mängder skärvätskor vid en bearbetningsprocess har potentiellt negativ inverkan inte bara för operatören men också på miljön. Utöver detta tillkommer ökade kostnader för tillverkningsprocessen. För att minska skärvätskekonsumtionen under maskinbearbetning införs en teknik som kallas minimalsmörjning(MQL=Minimum Quantity Lubrication) som använder mycket mindre mängd skärvätska men ändå är effektivare än standard kylspolning med skärvätska. Denna avhandling fokuserar på att bestämma konvektionen över ett skär med en konstant värmekälla placerad inuti ett kvadratiskt hölje och b
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38

Stratmann, Alexander. "In-situ Raman-Spektroskopie an Verdampfungsgleichgewichten Vermessung von Zweikomponentensystemen unter erhöhtem Druck und erhöhter Temperatur /." Aachen : Shaker, 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=970778155.

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39

Cline, Jean Schroeder. "Physical and chemical aspects of fluid evolution in hydrothermal ore systems." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-09162005-115029/.

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40

SILVA, Ana Paula Nunes da. "Ilha de calor urbana: diagnóstico e impactos no microclima da região metropolitana de Macapá, AP." Universidade Federal de Campina Grande, 2016. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1601.

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Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-08-30T13:43:17Z No. of bitstreams: 1 ANA PAULA NUNES DA SILVA - TESE (PPGMet) 2016.pdf: 25525790 bytes, checksum: 973f4462b19d6c6616cfec5845906a37 (MD5)<br>Made available in DSpace on 2018-08-30T13:43:17Z (GMT). No. of bitstreams: 1 ANA PAULA NUNES DA SILVA - TESE (PPGMet) 2016.pdf: 25525790 bytes, checksum: 973f4462b19d6c6616cfec5845906a37 (MD5) Previous issue date: 2016-05-06<br>CNPq<br>O objetivo deste trabalho foi verificar a ocorrência de ilha de calor urbana (ICU) e sua influência no microclima na Região Metropolitana de Ma
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41

Almotari, Masaed Moti M. "Viscosity and Density of Reference Fluid." Thesis, University of Canterbury. Physics and Astronomy, 2006. http://hdl.handle.net/10092/2065.

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The viscosity and density of bis(8-methylnonyl) benzene-1,2- dicarboxylate {diisodecyl phthalate (DIDP)}, with a nominal viscosity at T = 298 K and p = 0.1 MPa of 87 mPa•s, have been measured at temperatures from (298.15 to 423.15) K and pressures from (0.1 to 70) MPa. A vibrating wire viscometer, with a wire diameter of about 0.15 mm, was utilised for the viscosity measurements and the results have an expanded uncertainty, (k = 2), including the error arising from the pressure measurement, of between ±(2 and 2.5) % The density was determined with two vibrating tube densimeters one for operati
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42

Queimada, António José. "Propriedades e comportamento de soluções de hidrocarbonetos pesados a baixas temperaturas: medição e modelação." Doctoral thesis, Universidade de Aveiro, 2004. http://hdl.handle.net/10773/3173.

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Fruto da constante evolução da ciência e da tecnologia, referências ao uso de novos fluídos surgem a um ritmo cada vez maior. Novos refrigerantes, mais “amigos” do ambiente, líquidos iónicos, uma nova classe de solventes ou perfluorocarbonetos, moléculas capazes de dissolver suficiente oxigénio para poderem ser utilizadas como substitutas do sangue ou como fonte de oxigénio em processos biotecnológicos ou ainda como surfactantes em processos de extracção supercrítica com dióxido de carbono, são apenas alguns dos novos exemplos. Para o design correcto de produtos e processos envolvendo
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43

Tollit, Brendan S. "Coupled neutronic thermal fluid dynamic modelling of a very high temperature reactor." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/6369.

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The Very High Temperature Reactor (VHTR) is designed to push the boundaries and capabilities of existing High Temperature Gas Reactor technology to higher levels, challenging the desired inherent and passive safety features. To ascertain the viability of the design requires a detailed understanding of the complex multiphysics within the reactor core and the associated energy removal system. Due to the scale of the calculation computational numerical models are utilised. During a transient the greatest challenge to inherent and passive safety design features will occur. To understand the core d
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44

Christoula, Maria. "Fluid inclusion geochemistry of selected epigenetic, low temperature mineralization in the U.K." Thesis, Imperial College London, 2002. http://hdl.handle.net/10044/1/7326.

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Rahm, Andreas. "Quantum turbulence in ³He-B at ultra-low temperatures." Thesis, Lancaster University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289041.

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46

Apak, Esat Can. "A Study On Heat Transfer Iside The Wellbore During Drilling Operations." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608048/index.pdf.

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Analysis of the drilling fluid temperature in a circulating well is the main objective of this study. Initially, an analytical temperature distribution model, which utilizes basic energy conservation principle, is presented for this purpose. A computer program is written in order to easily implement this model to different cases. Variables that have significant effect on temperature profile are observed. Since the verification of the analytical model is not probable for many cases, a computer program (ANSYS) that uses finite element method is employed to simulate different well conditions. Thr
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Brocheny, Pascal O. "Modeling of the transient behavior of heat pipes with room-temperature working fluids." Connect to this title online, 2006. http://etd.lib.clemson.edu/documents/1175184863/.

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48

Webb, Paul B. "Modification and processing of polymers using supercritical fluids." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364653.

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49

Wheatland, Louise Abby. "Experiments with quartz tuning forks in quantum fluids at very low temperatures." Thesis, Lancaster University, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.654939.

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50

Sublett, David Matthew Jr. "PVTX and Raman Spectral Properties of Fluids at Elevated Pressures and Temperatures." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96336.

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Fluids are associated with a wide range of physical and chemical processes in the Earth, including transporting and concentrating important ore elements such as Cu, Au, Zn, and Pb. Significant amounts of fluid may be generated as a result of dehydration or decarbonation reactions, and the volatile content of a magma is directly linked to the explosivity of eruptions. In most cases, small amounts of the fluids involved in the formation or alteration of rocks are trapped within minerals in the form of fluid inclusions. These fluid inclusions may be studied to understand the composition and press
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