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Determination of Moisture Diffusivity as a Function of Both Moisture and Temperature
International Journal of Thermophysics, 2011The effect of moisture and temperature on liquid water transport in porous media was studied. Specimens of autoclaved aerated concrete were subjected to one-sided water penetration in isothermal conditions at temperatures of 20 °C, 40 °C, 60 °C, and 80 °C. After specified time intervals, moisture profiles were determined gravimetrically.
Robert Cerny
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Moisture Diffusivity in Food and Biological Materials
Drying Technology, 2007The spatial distributions of water content and temperature inside moist food or biological materials (native or manufactured) during drying are important in interpretation and prediction of quality changes. The dynamics of drying in modern devices is not simple—for instance, the process of intermittent drying—thus, a liquid diffusion model is expected ...
Xiao Dong Chen
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Moisture diffusion in cementitious materials Moisture capacity and diffusivity
Advanced Cement Based Materials, 1994Abstract Based on a model by Bažant and Najjar, and using a new model for adsorption isotherms, moisture capacity and diffusivity of concrete are analyzed. The moisture capacity, obtained as a derivative of the ] adsorption isotherm, first drops as the humidity increases from zero, then levels off as a consuant, and finally again increases when the ...
Yunping Xi +3 more
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Moisture diffusivity in food materials
Food Chemistry, 2013This paper investigates whether moisture diffusion can be predicted for food materials. We focus especially on mixtures of glucose homopolymers and water. The predictions are based on three theories: (1) the Darken relation, linking the mutual diffusivity to the self diffusivities, (2) the generalised Stokes-Einstein relation for the solute self ...
van der Sman, R.G.M., Meinders, M.B.J.
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AIP Conference Proceedings, 2015
Moisture transport in four different types of wood is investigated. The specimens are subjected to one-sided water penetration in vertical direction and the moisture profiles are determined by the capacitance method. The calibration is done a posteriori using the last measured moisture profile by the gravimetric method. The moisture diffusivity is then
Miloš Jerman, Robert Černý
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Moisture transport in four different types of wood is investigated. The specimens are subjected to one-sided water penetration in vertical direction and the moisture profiles are determined by the capacitance method. The calibration is done a posteriori using the last measured moisture profile by the gravimetric method. The moisture diffusivity is then
Miloš Jerman, Robert Černý
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Moisture diffusion modeling – A critical review
Microelectronics Reliability, 2016Abstract Techniques for enforcing the continuity of solute field in heterogeneous solvent under the conditions of steady temperature-humidity, steady temperature but dynamic humidity, and dynamic temperature are reviewed. The continuity of the wetness technique is justified on the principle of equality of chemical potential.
Ee-Hua Wong, S. B. Park
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On Moisture Diffusion Modeling Using Thermal-Moisture Analogy
Journal of Electronic Packaging, 2007Thermal-moisture analogy schemes for a moisture diffusion analysis are reviewed. Two schemes for practical applications are described using the governing equations of heat and mass diffusions: (1) direct analogy and (2) normalized analogy. The schemes are implemented to define valid domains of application.
Samson Yoon, Bongtae Han, Zhaoyang Wang
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Diffusion of moisture into building materials: A model for moisture transport
Energy and Buildings, 2014Abstract Presence of moisture in the building materials leads to a larger energy loss, especially in winter; therefore, drying is important to improve the energy efficiency of buildings. The drying process is based on the evaporation of the liquid water on the material surface where the water vapor releases to surrounding, or it is based on the ...
Eva Litavcova +6 more
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