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Moisture Diffusivity in Forest Fuels
International Journal of Wildland Fire, 1992Abstract. Apracticalmeans of quanmingthe diffusivities of forest fuels from fielddata is presented. The mathematics of this method is explored for four fuel shapes: a litter layer, a hardwood leaf, a twig and a square fuel moisture analogue stick, which are represented geometrically by a semi-infinite solid, a slab, a cylinder and a square prism ...
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Moisture diffusion in moist materials
Journal of Engineering Physics, 1968The first systematic study of the moisture diffusion coefficients of various materials is reported.
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Moisture diffusion in polyester–woodflour composites
Polymer, 1999Abstract The understanding of water–polymer interactions in polymeric composite materials is critical to the prediction of their behavior in applications where they are exposed to water or humid environment. Moisture diffusion in unsaturated polyester–woodflour composites exposed to environments kept at room temperature and different relative ...
N.E Marcovich +2 more
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Oxygen Diffusion Characteristics of Gas Diffusion Layers With Moisture
ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels, 2008The mass transfer characteristics of the gas diffusion layer (GDL) in a polymer electrolyte fuel cell (PEFC) are closely related to the performance. In this study, the oxygen diffusivity of paper and cloth type porous media, which are generally used as GDLs, were measured with respect to liquid water content, using experimental apparatus consisting of ...
Daigo Iwasaki +3 more
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Drying Model and Moisture Diffusion Coefficient
Advanced Materials Research, 2012Varied values of moisture diffusivity estimated using Crank’s equation with different initial moisture content, equilibrium moisture content and sample thickness are often reported. However, a theoretical explanation to this phenomenon is not available to date.
Xian Xi Liu, Jun Ruo Che, Sai Zhang
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Moisture diffusion invegetable oil-paper insulation
2011 IEEE International Conference on Dielectric Liquids, 2011Vegetable insulating oils are fire-resistant and environment-friendly liquid dielectrics. This paper presents an experiment system to simulate moisture diffusion in oil-paper insulation system based on vegetable insulating oils. A mathematical model is presented for moisture diffusion in vegetable oil-paper insulation based on the Fick's second law. By
null Zhaotao Zhang +3 more
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Holz als Roh- und Werkstoff, 1998
The diffusion model based on Fick's second law has been used to predict the moisture movement in nonsteady state. However, the diffusion coefficient generally is not a constant. The diffusion equation origins from well-known heat transfer theory. In the case of moisture movement, moisture below fiber saturation point should be considered to have some ...
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The diffusion model based on Fick's second law has been used to predict the moisture movement in nonsteady state. However, the diffusion coefficient generally is not a constant. The diffusion equation origins from well-known heat transfer theory. In the case of moisture movement, moisture below fiber saturation point should be considered to have some ...
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Moisture Diffusion in Fiber Reinforced Plastics
Journal of Engineering Materials and Technology, 1976Fiber-reinforced epoxy laminates were exposed to several combinations of temperature and relative humidity. The purpose was to determine rates and extent of moisture absorption. Diffusion rates varied with temperature, and equilibrium moisture contents varied with relative humidity.
E. L. McKague +2 more
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Moisture diffusivities of sunflower seed components
International Journal of Food Science & Technology, 1993SummaryA diffusion‐based drying model has been used to separately model the thin‐layer drying of sunflower kernel and whole seed. the diffusivity of kernel was determined by means of the analytical solution of Fick's second law. the drying of whole seed was simulated by means of the numerical solution of Fick's second law for a two‐composite solid ...
CLARA O. ROVEDO +2 more
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Moisture Content Distribution and Moisture Diffusion in Foods During Heating
1994“The mechanism of drying has been the subject of scientific study for more than 100 years, but it is still not thoroughly understood. External factors such as air temperature, pressure, humidity and velocity are governed by relatively simple and well known laws, but not the internal transfer of moisture.” Although Van Arsdel wrote this in 1973, the ...
Christina Skjöldebrand +1 more
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