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| Registros recuperados: 11 | |
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| Ikegwu, Onyekachi John. |
| The thermal conductivity of agricultural seeds has been used as engineering parameter in the design of process and machines for drying, storing, aeration and refrigeration. The thermal conductivity of white and red pigeon pea seeds with changes in moisture content and temperature was investigated using the transient heat transfer method. The thermal conductivity of white and red pigeon pea seeds increased from 0.2387 to 0.3497 Wm-1k-1 , and 0.2375 to 0.3425 Wm-1k-1 respectively, as the moisture content increased from 5 to 35% w.b. Thermal conductivity of white and red pigeon pea seeds increased significantly (p<0.05) from 0.2643 to 0.3543 Wm-1k-1 , and from 0.2711 to 0.3311 Wm-1k-1 respectively, as temperature increased from 10 to 70 ℃. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thermal conductivity; Pigeon pea seeds; Moisture content; Temperature; Activation energy. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6065 |
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| Barbosa,Vanessa Camarinha; Garcia-Rojas,Edwin Elard; Coimbra,Jane Sélia dos Reis; Cipriano,Paula de Aguiar; Oliveira,Eduardo Basílio de; Telis-Romero,Javier. |
| Dulce de leche (DL), a dairy dessert highly appreciated in Brazil, is a concentrated product containing about 70% m/m of total solids. Thermophysical and rheological properties of two industrial Brazilian Dulce de leche formulations (classic Dulce de leche and Dulce de leche added with coconut flakes 1.5% m/m) were determined at temperatures comprised between 28.4 and 76.4 °C. In general, no significant differences (p < 0.05) were observed in the presence of coconut flakes in the two formulations. Heat capacity varied from 2633.2 to 3101.8 J/kg.°C; thermal conductivity from 0.383 to 0.452 W/m.°C; specific mass from 1350.7 to 1310.7 kg/m³; and, thermal diffusivity from (1.082 × 10-7 to 1.130 × 10-7) m²/s. The Bingham model was used to properly describe... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bingham model; Dulce de leche; Heat capacity; Thermal conductivity; Specific mass; Thermal diffusivity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000100014 |
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| Cabral,Renato Alexandre Ferreira; Orrego-Alzate,Carlos Eduardo; Gabas,Ana Lúcia; Telis-Romero,Javier. |
| Rheological and thermophysical properties were determined for blackberry juice, which was produced from blackberry fruit at 9.1 ± 0.5 °Brix and density of 1.0334 ± 0.0043 g cm-3. The concentration process was performed using a roto evaporator, under vacuum, to obtain concentrated juice at about 60 °Brix. In order to obtain different concentrations, concentrated juice was diluted with distilled water. Rheological measurements were carried out using a Rheotest 2.1 Searle type rheometer. In the tested ranges, the samples behaved as pseudoplastic fluids, and the Power-Law model was satisfactorily fitted to the experimental data. The friction factor was measured for blackberry juice in laminar flow conditions of pseudoplastic behavior. Thermal conductivity,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fruit juice; Rheology; Thermal conductivity; Thermal properties. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612007000300025 |
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| Goto, Shusaku; Yamano, Makoto; Morita, Sumito; Kanamatsu, Toshiya; Hachikubo, Akihiro; Kataoka, Satsuki; Tanahashi, Manabu; Matsumoto, Ryo. |
| Physical properties (bulk density and porosity) and thermal properties (thermal conductivity, heat capacity, specific heat, and thermal diffusivity) of sediment are crucial parameters for basin modeling. We measured these physical and thermal properties for mud-dominant sediment recovered from the Joetsu Basin, in the eastern margin of the Japan Sea. To determine thermal conductivity, heat capacity, and thermal diffusivity, the dual-needle probe method was applied. Grain density and grain thermal properties for the mud-dominant sediment were estimated from the measured physical and thermal properties by applying existing models of physical and thermal properties of sediment. We suggest that the grain density, grain thermal conductivity, and grain thermal... |
| Tipo: Text |
Palavras-chave: Thermal conductivity; Thermal diffusivity; Heat capacity; Specific heat; Dual-needle probe method; Mineral composition. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00387/49789/50343.pdf |
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| Maia,Alex Sandro Campos; Silva,Roberto Gomes da; Souza Junior,João Batista Freire de; Silva,Rosiane Batista da; Domingos,Hérica Girlane Tertulino. |
| The objective of the present study was to assess the effective thermal conductivity of the hair coat (k ef, mW.m-1.K-1) of Holstein cows in a tropical environment, as related to conduction and radiation in the absence of free convection. The average k ef was 49.72 mW.m-1.K-1, about twice the conductivity of the air (26 mW.m-1.K-1) and much less than that of the hair fibres (260 mW.m-1.K-1). The low k ef values were attributed mainly to the small cross area of individual hairs, ρef/ρf (17.2% and 21.3% for black and white hairs, respectively). White coats were denser, with longer hairs and significantly higher k ef (53.15 mW.m-1.K-1) than that of the black hairs (49.25 mW.m-1.K-1). The heritability coefficient of the effective thermal conductivity was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hair coat; Holstein cows; Thermal conductivity. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001100022 |
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| Registros recuperados: 11 | |
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