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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Machado, Thaís Ribeiro;

    A presente pesquisa discorre sobre o tema sustentabilidade e colaboração, nos ecossistemas criativos de moda. A partir da observação participante de Thiollent (1986), este trabalho estuda 12 projetos colaborativos do Ecossistema da Moda Sustentável de Porto Alegre, com o objetivo de promover descontinuidades sistêmicas, no sistema de moda local. A sustentabilidade, aqui, é compreendida pela perspectiva da ecologia profunda de Guatarri (1990) e Capra e Luisi (2014), e as análises são feitas com base nos conceitos de colaboração de Manzini (2017), e dos papéis para inovação social de Freire (2017). Os principais resultados alcançados foram os diferentes formatos e dinâmicas encontradas na análise dos encontros e percursos projetuais, para germinação dos projetos. Identificou-se que os processos que levam aos encontros colaborativos têm como principal característica o equilíbrio entre vínculos fortes e fracos, e um envolvimento comum ao grupo de acordo com o objetivo do projeto. Para que esses encontros evoluam em projetos para descontinuidades sistêmicas, é necessária a infraestruturação dos processos, vínculos fortes, envolvimento ativo e diversidade e transparência nos papéis a serem exercidos. This research discusses the theme of sustainability and collaboration, in creative fashion ecosystems. From the participant observation of Thiollent (1986), this work studies 12 collaborative projects of the Sustainable Fashion Ecosystem of Porto Alegre, with the objective of promoting systemic discontinuities, in the local fashion system. Sustainability, here, is understood from the perspective of deep ecology by Guatarri (1990) and Capra and Luisi (2014), and the analyzes are made based on the concepts of collaboration by Manzini (2017), and the roles for social innovation by Freire (2017). The main results achieved were the different formats and dynamics found in the analysis of the meetings and project paths, for the germination of the projects. It was identified that the main characteristic of the processes that lead to collaborative meetings is the balance between strong and weak bonds, and a common involvement of the group according to the project's objective. For these meetings to evolve into projects for systemic discontinuities, it is necessary to process infrastructure, strong bonds, active involvement and diversity and transparency in the roles to be played. Submitted by Jeferson Carlos da Veiga Rodrigues (jveigar@unisinos.br) on 2021-02-18T13:56:23Z No. of bitstreams: 1 Thaís Ribeiro Machado_.pdf: 1775312 bytes, checksum: 563eebb407d59ae01883b541ef3c159c (MD5) Made available in DSpace on 2021-02-18T13:56:23Z (GMT). No. of bitstreams: 1 Thaís Ribeiro Machado_.pdf: 1775312 bytes, checksum: 563eebb407d59ae01883b541ef3c159c (MD5) Previous issue date: 2020-08-13 Lojas Renner

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LAReferencia - Red F...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: de Fátima Maciel, Fabiane; Alves Oliveira, Carlos; da Silva, Leonardo; Campos de Sousa, Fernanda; +2 Authors

    El estudio teórico de las aplicaciones de la Biomimética en la construcción y desarrollo de soluciones reúne métodos, conceptos y ejemplos de aplicaciones que pueden despertar la creatividad y, al mismo tiempo, el pensamiento crítico sobre la recuperación del equilibrio entre la acción humana y la naturaleza. La inspiración de la Biomimética puede generar conciencia sobre la necesidad de adoptar nuevas tecnologías, estándares y criterios de supervivencia, considerando el equilibrio ambiental. En este sentido, el objetivo de este estudio es describir el uso de la Biomimética como un agente prometedor de ideas sostenibles para los problemas identificados en el área del ambiente en la producción animal. Con un análisis sistemático de la literatura, se presentan propuestas de soluciones ya utilizadas/diseñadas para resolver problemas existentes, a través de analogías con sistemas naturales. De esta forma, se apuntan tecnologías o investigaciones menos extendidas, como las construcciones rápidas y portátiles, estructuras que favorecen la mejora del confort térmico y acústico, el tratamiento de aguas y aguas residuales, y el consumo de energías renovables. Todas estas tecnologías son prometedoras en el proceso de optimización de estructuras para la producción animal. O estudo teórico das aplicações da Biomimética nas construções e no desenvolvimento de soluções reúne métodos, conceitos e exemplos de aplicações que podem despertar a criatividade e, ao mesmo tempo, o pensamento crítico a respeito do resgate do equilíbrio entre a ação humana e a natureza. A inspiração da Biomimética pode conscientizar sobre a necessidade de adotarem-se novas tecnologias, padrões e critérios de sobrevivência, considerando o equilíbrio ambiental. Neste sentido, o objetivo deste estudo é descrever a utilização da Biomimética como agente promissor de ideias sustentáveis às problemáticas identificadas na área de ambiência na produção animal. Com uma análise sistemática da literatura, são apresentadas propostas de soluções já utilizadas/projetadas para resolver problemas existentes, por meio de analogias com sistemas naturais. Desta forma, são apontadas tecnologias menos difundidas ou em fase de pesquisa, como construções rápidas e portáteis, estruturas que favoreçam a melhoria do conforto térmico e acústico, tratamento da água e esgoto, e consumo de energia renovável. Todas estas tecnologias são promissoras no processo de otimização de estruturas para a produção animal. The theoretical study of the applications of Biomimetics in the construction and development of solutions brings together methods, concepts and examples of applications that can awaken creativity and, at the same time, critical thinking about the recovery of the balance between human action and nature. The inspiration of Biomimetics can raise awareness about the need to adopt new technologies, standards, and survival criteria, considering the environmental balance. In this sense, the objective of this study is to describe the use of Biomimetics as a promising agent for sustainable ideas to the problems identified in ambience in animal production. With a systematic analysis of the literature, proposals for solutions already used/designed to solve existing problems are presented, through analogies with natural systems. In this way, less widespread technologies or research are pointed out, such as fast and portable constructions, structures that favor the improvement of thermal and acoustic comfort, water and sewage treatment, and renewable energy consumption. All these technologies are promising in the process of optimizing structures for animal production.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LAReferencia - Red F...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: World Bank Group;

    Brazil is highly exposed to climate change risks. The impacts of global climate change risks and local practices on the Amazon and Cerrado biomes are of particular concern, as they provide vital ecosystem services to Brazil, the South American region, and the world. The Brazil Country Climate and Development Report (CCDR) examines the implications of climate change and climate action for Brazil's development objectives and priorities. It identifies opportunities for Brazil to achieve both its development goals and its climate commitments. It lays out a combination of sectoral and economy-wide policy reforms, as well as targeted investments in near- and medium-term mitigation and adaptation measures to achieve more rapid and inclusive development with lower greenhouse gas (GHG) emissions. The idea is to maximize synergies between climate and development objectives, while addressing trade-offs among policy objectives and key transition challenges.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Open Knowledge Repos...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Open Knowledge Repos...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Atalaia, João Miguel Oliveira;

    A preocupação com as alterações climáticas causadas pelo aquecimento global e pelas emissões de gases de efeito de estufa, originaram restrições legislativas que limitam o uso de gases fluorados com efeito de estufa, pressionando o setor industrial e comercial como supermercados e hipermercados a aderir a outras alternativas mais viáveis não só do ponto de vista económico, mas também do ponto de vista ambiental. A alternativa passa pelo uso de fluidos frigorigéneos naturais, como por exemplo amoníaco, dióxido de carbono e água. Como cada fluido frigorigéneo natural apresenta as suas características, vantagens e desvantagens que as caracterizam, é cada vez mais importante tendo em conta as opções de fluidos naturais que existem no mercado, perceber, qual o que se melhor adequa para o uso de instalações frigoríficas comerciais. Dado que, existem diversos sistemas frigoríficos que usam fluidos frigorigéneos naturais, é importante também perceber quais os sistemas que mais se adequam para um determinado projeto. O presente trabalho tem como principal objetivo caracterizar os sistemas a CO2 transcríticos, bem como o sistema a amoníaco com distribuição de água glicolada, e perceber através de um caso de estudo prático qual dos sistemas é o mais adequado. Para isso efetuou-se uma descrição dos fluidos frigorigéneos em estudo, sendo apresentadas as suas características, vantagens e desvantagens, bem como os tipos de sistemas em que estes podem ser encontrados e respetiva descrição dos componentes. Assim, será possível para o caso de estudo, escolher o melhor sistema a CO2 e o melhor sistema a amoníaco com distribuição de água glicolada a utilizar, sendo depois efetuado todo o dimensionamento dos equipamentos bem como a sua implementação no caso de estudo. Para análise e comparação dos sistemas em estudo foram analisados indicadores de performance (KPI), que permitem no final perceber qual o sistema melhor.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Repositório Científi...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Machado, Thaís Ribeiro;

    A presente pesquisa discorre sobre o tema sustentabilidade e colaboração, nos ecossistemas criativos de moda. A partir da observação participante de Thiollent (1986), este trabalho estuda 12 projetos colaborativos do Ecossistema da Moda Sustentável de Porto Alegre, com o objetivo de promover descontinuidades sistêmicas, no sistema de moda local. A sustentabilidade, aqui, é compreendida pela perspectiva da ecologia profunda de Guatarri (1990) e Capra e Luisi (2014), e as análises são feitas com base nos conceitos de colaboração de Manzini (2017), e dos papéis para inovação social de Freire (2017). Os principais resultados alcançados foram os diferentes formatos e dinâmicas encontradas na análise dos encontros e percursos projetuais, para germinação dos projetos. Identificou-se que os processos que levam aos encontros colaborativos têm como principal característica o equilíbrio entre vínculos fortes e fracos, e um envolvimento comum ao grupo de acordo com o objetivo do projeto. Para que esses encontros evoluam em projetos para descontinuidades sistêmicas, é necessária a infraestruturação dos processos, vínculos fortes, envolvimento ativo e diversidade e transparência nos papéis a serem exercidos. This research discusses the theme of sustainability and collaboration, in creative fashion ecosystems. From the participant observation of Thiollent (1986), this work studies 12 collaborative projects of the Sustainable Fashion Ecosystem of Porto Alegre, with the objective of promoting systemic discontinuities, in the local fashion system. Sustainability, here, is understood from the perspective of deep ecology by Guatarri (1990) and Capra and Luisi (2014), and the analyzes are made based on the concepts of collaboration by Manzini (2017), and the roles for social innovation by Freire (2017). The main results achieved were the different formats and dynamics found in the analysis of the meetings and project paths, for the germination of the projects. It was identified that the main characteristic of the processes that lead to collaborative meetings is the balance between strong and weak bonds, and a common involvement of the group according to the project's objective. For these meetings to evolve into projects for systemic discontinuities, it is necessary to process infrastructure, strong bonds, active involvement and diversity and transparency in the roles to be played. Submitted by Jeferson Carlos da Veiga Rodrigues (jveigar@unisinos.br) on 2021-02-18T13:56:23Z No. of bitstreams: 1 Thaís Ribeiro Machado_.pdf: 1775312 bytes, checksum: 563eebb407d59ae01883b541ef3c159c (MD5) Made available in DSpace on 2021-02-18T13:56:23Z (GMT). No. of bitstreams: 1 Thaís Ribeiro Machado_.pdf: 1775312 bytes, checksum: 563eebb407d59ae01883b541ef3c159c (MD5) Previous issue date: 2020-08-13 Lojas Renner

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LAReferencia - Red F...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: de Fátima Maciel, Fabiane; Alves Oliveira, Carlos; da Silva, Leonardo; Campos de Sousa, Fernanda; +2 Authors

    El estudio teórico de las aplicaciones de la Biomimética en la construcción y desarrollo de soluciones reúne métodos, conceptos y ejemplos de aplicaciones que pueden despertar la creatividad y, al mismo tiempo, el pensamiento crítico sobre la recuperación del equilibrio entre la acción humana y la naturaleza. La inspiración de la Biomimética puede generar conciencia sobre la necesidad de adoptar nuevas tecnologías, estándares y criterios de supervivencia, considerando el equilibrio ambiental. En este sentido, el objetivo de este estudio es describir el uso de la Biomimética como un agente prometedor de ideas sostenibles para los problemas identificados en el área del ambiente en la producción animal. Con un análisis sistemático de la literatura, se presentan propuestas de soluciones ya utilizadas/diseñadas para resolver problemas existentes, a través de analogías con sistemas naturales. De esta forma, se apuntan tecnologías o investigaciones menos extendidas, como las construcciones rápidas y portátiles, estructuras que favorecen la mejora del confort térmico y acústico, el tratamiento de aguas y aguas residuales, y el consumo de energías renovables. Todas estas tecnologías son prometedoras en el proceso de optimización de estructuras para la producción animal. O estudo teórico das aplicações da Biomimética nas construções e no desenvolvimento de soluções reúne métodos, conceitos e exemplos de aplicações que podem despertar a criatividade e, ao mesmo tempo, o pensamento crítico a respeito do resgate do equilíbrio entre a ação humana e a natureza. A inspiração da Biomimética pode conscientizar sobre a necessidade de adotarem-se novas tecnologias, padrões e critérios de sobrevivência, considerando o equilíbrio ambiental. Neste sentido, o objetivo deste estudo é descrever a utilização da Biomimética como agente promissor de ideias sustentáveis às problemáticas identificadas na área de ambiência na produção animal. Com uma análise sistemática da literatura, são apresentadas propostas de soluções já utilizadas/projetadas para resolver problemas existentes, por meio de analogias com sistemas naturais. Desta forma, são apontadas tecnologias menos difundidas ou em fase de pesquisa, como construções rápidas e portáteis, estruturas que favoreçam a melhoria do conforto térmico e acústico, tratamento da água e esgoto, e consumo de energia renovável. Todas estas tecnologias são promissoras no processo de otimização de estruturas para a produção animal. The theoretical study of the applications of Biomimetics in the construction and development of solutions brings together methods, concepts and examples of applications that can awaken creativity and, at the same time, critical thinking about the recovery of the balance between human action and nature. The inspiration of Biomimetics can raise awareness about the need to adopt new technologies, standards, and survival criteria, considering the environmental balance. In this sense, the objective of this study is to describe the use of Biomimetics as a promising agent for sustainable ideas to the problems identified in ambience in animal production. With a systematic analysis of the literature, proposals for solutions already used/designed to solve existing problems are presented, through analogies with natural systems. In this way, less widespread technologies or research are pointed out, such as fast and portable constructions, structures that favor the improvement of thermal and acoustic comfort, water and sewage treatment, and renewable energy consumption. All these technologies are promising in the process of optimizing structures for animal production.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LAReferencia - Red F...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: World Bank Group;

    Brazil is highly exposed to climate change risks. The impacts of global climate change risks and local practices on the Amazon and Cerrado biomes are of particular concern, as they provide vital ecosystem services to Brazil, the South American region, and the world. The Brazil Country Climate and Development Report (CCDR) examines the implications of climate change and climate action for Brazil's development objectives and priorities. It identifies opportunities for Brazil to achieve both its development goals and its climate commitments. It lays out a combination of sectoral and economy-wide policy reforms, as well as targeted investments in near- and medium-term mitigation and adaptation measures to achieve more rapid and inclusive development with lower greenhouse gas (GHG) emissions. The idea is to maximize synergies between climate and development objectives, while addressing trade-offs among policy objectives and key transition challenges.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Open Knowledge Repos...arrow_drop_down
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    Authors: Atalaia, João Miguel Oliveira;

    A preocupação com as alterações climáticas causadas pelo aquecimento global e pelas emissões de gases de efeito de estufa, originaram restrições legislativas que limitam o uso de gases fluorados com efeito de estufa, pressionando o setor industrial e comercial como supermercados e hipermercados a aderir a outras alternativas mais viáveis não só do ponto de vista económico, mas também do ponto de vista ambiental. A alternativa passa pelo uso de fluidos frigorigéneos naturais, como por exemplo amoníaco, dióxido de carbono e água. Como cada fluido frigorigéneo natural apresenta as suas características, vantagens e desvantagens que as caracterizam, é cada vez mais importante tendo em conta as opções de fluidos naturais que existem no mercado, perceber, qual o que se melhor adequa para o uso de instalações frigoríficas comerciais. Dado que, existem diversos sistemas frigoríficos que usam fluidos frigorigéneos naturais, é importante também perceber quais os sistemas que mais se adequam para um determinado projeto. O presente trabalho tem como principal objetivo caracterizar os sistemas a CO2 transcríticos, bem como o sistema a amoníaco com distribuição de água glicolada, e perceber através de um caso de estudo prático qual dos sistemas é o mais adequado. Para isso efetuou-se uma descrição dos fluidos frigorigéneos em estudo, sendo apresentadas as suas características, vantagens e desvantagens, bem como os tipos de sistemas em que estes podem ser encontrados e respetiva descrição dos componentes. Assim, será possível para o caso de estudo, escolher o melhor sistema a CO2 e o melhor sistema a amoníaco com distribuição de água glicolada a utilizar, sendo depois efetuado todo o dimensionamento dos equipamentos bem como a sua implementação no caso de estudo. Para análise e comparação dos sistemas em estudo foram analisados indicadores de performance (KPI), que permitem no final perceber qual o sistema melhor.

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