2019
DOI: 10.1590/1806-9126-rbef-2018-0234
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A busca pelo copo ideal: um estudo de otimização em transferência de calor

Abstract: Resumo Neste trabalho é apresentada uma análise térmica do problema de um líquido contido em um copo sendo aquecido pelo ambiente enquanto é consumido. O problema foi sugerido pelo consumo de bebidas como a cerveja, que se deseja manter o mais fria possível ao longo do consumo. O estudo propõe um meio passivo para a solução do problema, otimizando o formato do copo para garantir a mínima troca de calor, sem o uso de isolantes. O copo foi modelado como um corpo de revolução, gerado por um curva suave S, feito d… Show more

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Cited by 3 publications
(4 citation statements)
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References 9 publications
(15 reference statements)
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“…In our experiment, all objects used to cool the water have the same initial temperature of approximately −10 • C. Moreover, both the liquid and the container are at the same temperature as the surrounding environment of approximately 19 • C. As a result, any initial temperature difference between the environment and 5 These were made by us using soda cans, Tek Bond glue, and aluminum foil. 6 These were purchased from an internet sales site and did not come with any information regarding the materials used.…”
Section: Experiments Setupmentioning
confidence: 99%
See 2 more Smart Citations
“…In our experiment, all objects used to cool the water have the same initial temperature of approximately −10 • C. Moreover, both the liquid and the container are at the same temperature as the surrounding environment of approximately 19 • C. As a result, any initial temperature difference between the environment and 5 These were made by us using soda cans, Tek Bond glue, and aluminum foil. 6 These were purchased from an internet sales site and did not come with any information regarding the materials used.…”
Section: Experiments Setupmentioning
confidence: 99%
“…To measure the contributions of different types of artificial ice to the cooling process, we recorded the temperature change (over time) of water in a container, using both regular and artificial ice. The artificial ice samples included water wrapped in aluminum foil, water with a combination of Tek Bond glue and aluminum foil 5 , an unknown liquid with stainless steel and plastic wrapping 6 , soapstone, and gel wrapped in plastic 7 . The different types of ice used in the experiments are shown in figure 2.…”
Section: Experiments Setupmentioning
confidence: 99%
See 1 more Smart Citation
“…Nota-se também na Figura 3 que houve uma significativa variabilidade no aproveitamento térmico da energia solar pelo coletor solar, o que pode ser explicado, em parte, pelo fato de que a eficiência da transferência de calor entre corpos separados por um meio interveniente, como a atmosfera, é influenciada diretamente pelo próprio meio, que pode absorver, refletir e dispersar parte da energia disponível (PELLEGRINI, 2019).…”
Section: Revistaunclassified