Air Humidity Sensors
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Thermal comfort monitoring in aviaries by a real-time data acquisition system
RESUMO O conforto térmico no interior de instalações de criação de frangos de corte é essencial na obtenção de bons resultados nesta atividade de produção. A avaliação das condições termodinâmicas adequadas requer a medição e controle, geralmente implicando em custos e manutenção especializada. Neste trabalho, objetivou-se monitorar a dist
Rev. bras. eng. agríc. ambient.. Publicado em: 12/08/2019
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2. Estudo de cerâmicas porosas de titânia e zircônia mono e multicamadas para aplicação como sensores de umidade do ar / Study under ceramic porous of titania and zirconia in mono and multilayer configurations to use as air humidity sensor
A demanda crescente no monitoramento de parâmetros ambientais, fez com que os dispositivos chamados sensores participassem de intensos processos de pesquisa e de desenvolvimento tecnológico. A necessidade de uma melhor compreensão do comportamento de sensores cerâmicos porosos em relação à sensitividade à umidade ambiente motivou o desenvolvimento de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/11/2011
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3. Desempenho de diferentes estrategias de aeração de milho armazenado / Performance of different aeration strategies for stored corn
The efficiency of grain storage doesn t consist only to "save" the agricultural production, but mainly to avoid the problem with the moisture migration, incidence of insects and development of microorganism in grains, during the process. Aeration is currently used for reducing and homogenization the intergranular temperature, aiming to minimize these problem
Publicado em: 2010
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4. Assembly and evaluation of a cooling tower for use in teaching undergraduate activities / Montagem e avaliação de uma torre de resfriamento para uso em atividades de ensino de graduação
This work describes proposal for complementing Process Systems Engineering (PSE) undergraduate learning. Traditional teaching of PSE is normally restricted to modeling and computer simulations, with very little contact with actual processes. We felt that applying theoretical concepts to practical problems would be very welcome by the students and improve the
Publicado em: 2009
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5. Propriedades estruturais, microestruturais e elétricas da cerâmica BaSnO3 / Structural properties, the microstructural and electrical ceramics BaSnO3
The surface properties of ceramic powders play an important role in the production of devices of high quality, high performance and reliability. Many of these properties are related to interactions with the environment. One example, ceramics are used in gas sensor devices. A ceramic material that has been reported as promising gas sensor is perovskite BaSnO3
Publicado em: 2009
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6. Microclimate characterization of the protected environment cultivated with french-beans / Caracterização do microclima de ambiente protegido cultivado com feijão-vagem
The protected environment changes the meteorological elements in its interior related to the outward environment. The french-beans culture is considered a high risk one, being so sensitive to adverse meteorological conditions. The cultivation in protected environment may become viable the production in South Region under unfavorable year period. Due to the e
Publicado em: 2008
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7. Sistema de controle e automação aplicável a secadores em camada fina utilizando-se instrumentos digitais endereçáveis / Automation and control system applicable to thin-layer grain dryer by using digital addressable instruments
Many grain-dryers models with different configurations and applications are encountered worldwide. Among those a thin-layer dryer makes it possible to perform detailed analysis of the drying process. With the results from this analysis results, the drying curves can be modeled and the deep bad grain drying process can be predicted. The thin layer grain dryer
Publicado em: 2006
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8. Estudo do comportamento termodinÃmico das Ãreas centrais de negÃcios de BrasÃlia e de Taguatinga, Distrito Federal
The study of the climate is part of the urban environmental dimension and has been contributed towards the matters of the environment of the cities. The understanding of the urban climate as an important component in the constitution of the environment is one of the greatest issues of the modern world. This essay gets methodological reference from the thermo
Publicado em: 2004
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9. BalanÃo hÃdrico e de energia em solo cultivado e sem vegetaÃÃo, para as condiÃÃes do brejo paraibano / Water and energy balance in the cultivated and bare soil in a montane area in paraiba, Brazil
In the areas of rainfed agriculture it is very important to quantify losses of water by evapotranspiration and soil evaporation. The methods used for measuring evapotranspiration and/or evaporation varies from direct measurements techniques, using lysimeters, to measurements of the water and energy balances. The precision lysimeters have high cost, being onl
Publicado em: 2004
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10. Microclimate and gerbera growth under different greenhouse covers. / Microclima e produção de gérbera em ambientes protegidos com diferentes tipos de cobertura.
The objective of this work was to evaluate the influence of white polyethylene as a greenhouse cover and its association with different shading screens (thermal screen and black screen) on the following environmental elements: incoming solar radiation (Qg), photosynthetically active radiation (PAR), temperature (T), relative humidity (RH) and evapotranspirat
Publicado em: 2003
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11. Growth of bromeliads in greenhouses with different heights and levels of shading. / Desenvolvimento de bromélias em ambientes protegidos com diferentes alturas e níveis de sombreamento.
The objective of this research was to evaluate the effect of different greenhouses heights and levels of shading on the growth of Aechmea fasciata and Guzmania lingulata (Bromeliaceae). The experiment was done from march 26 th of 2001 to april third of 2002, in two greenhouses, built in east-west orientation, at the experimental area of Nucleos of Environmen
Publicado em: 2002
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12. Adaptive control of paste drying in spouted bed using the GPC algorithm
Spouted bed is an equipment reasonable investigated for drying of many and different materials ranging from granules to pastes and suspensions. This work presents an implementation and tests of an advanced control strategy (GPC) on a spouted bed dryer. Water was used as the ideal paste for tests. A microcomputer PC-486 type was used to maintain humidity and
Brazilian Journal of Chemical Engineering. Publicado em: 2000-12