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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Termodinâmica, um tutorial para entendimento do conceito de entropia / Thermodynamics, a tutorial for understanding the entropy concept

Gregio, Nivaldo de Oliveira 01 August 2016 (has links)
Submitted by Livia Mello (liviacmello@yahoo.com.br) on 2016-10-14T12:23:25Z No. of bitstreams: 1 DissNOG.pdf: 2677969 bytes, checksum: 0a4b7cc57095da998c310a3abfe6a92c (MD5) / Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-11-08T18:45:34Z (GMT) No. of bitstreams: 1 DissNOG.pdf: 2677969 bytes, checksum: 0a4b7cc57095da998c310a3abfe6a92c (MD5) / Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-11-08T18:45:40Z (GMT) No. of bitstreams: 1 DissNOG.pdf: 2677969 bytes, checksum: 0a4b7cc57095da998c310a3abfe6a92c (MD5) / Made available in DSpace on 2016-11-08T18:45:48Z (GMT). No. of bitstreams: 1 DissNOG.pdf: 2677969 bytes, checksum: 0a4b7cc57095da998c310a3abfe6a92c (MD5) Previous issue date: 2016-08-01 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / This dissertation is intended to be used by high school teachers and contains a set of concepts that leads to the understanding of entropy and its applications in the classroom. It begins with the definition of thermodynamics, through the study of the first and second law, showing the relevance of choice of the thermodynamic system, the nature of its boundaries, the variables of the thermodynamic transformations, ending with Carnot cycle and the reversibility and irreversibility concepts. The ideas of microstates and macrostates is introduced with the use of models easy to be used in the classroom, enabling the students to obtain quantitative results for disorder and therefore for entropy. The increase of entropy is associated with irreversible transformations and with energy degradation leading to effects on life and on the environment. The purpose of this dissertation is to provide tools for teachers, so that the Carnot cycle and the entropy concept can be used more significantly, with a broader view allowing teachers and high school students to have a better understanding of natural phenomena appreciating to learn new concepts. / Essa dissertação é voltada para os professores de ensino médio e contém um conjunto de conceitos que leva ao entendimento de entropia e sua aplicação em sala de aula. Tem início com a definição da termodinâmica, passando pelo estudo da primeira e da segunda lei da termodinâmica, mostrando a relevância da clara escolha do sistema termodinâmico de interesse, especificando a natureza das fronteiras do sistema, das variáveis envolvidas nas transformações, terminando com ciclo de Carnot e com os conceitos de reversibilidade e irreversibilidade. As ideias de microestados e macroestados são introduzidas, com uso de modelos de fácil utilização em sala de aula, possibilitando uma formulação quantitativa do conceito de desordem e de entropia. Conclui-se associando o aumento de entropia nas transformações irreversíveis com a degradação energética, que influi no desenvolvimento da vida e no meio ambiente, demonstrando o caráter probabilístico da entropia. O intuito dessa dissertação é fornecer ferramentas para que o ensino do ciclo de Carnot possa ser feito de maneira mais significativa, mais participativa, levando o estudante a gostar de aprender novos conceitos.

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