water vapor diffusion

The process by which water vapor spreads or moves through permeable materials caused by differences in water vapor pressure.

References in periodicals archive ?

The diffusion coefficient of water vapor is three to four orders of magnitude smaller in lumens than water vapor diffusion coefficient in free water (Siau 1995).

Effect of Different Hydrothermal Treatments (Steam and Hot Compressed Water) on Physical Properties and Drying Behavior of Yellow-Poplar (Liriodendron tulipifera)

Neopac The Tube'sPolyfoil[R] tubes offer uniqueprotection against light, air, water vapor diffusion and substance migration.

Winners Crowned in Inaugural Technology Excellence Awards

Neopac's Polyfoil[R] tubes offer unique protection against light, air, water vapor diffusion and substance migration.

Winners crowned in inaugural Technology Excellence Awards

VeoVa vinyl ester provides both alkaline and water resistance, while the water glass ensures good water vapor diffusion. DXV.4229 is suitable for use in indoor and outdoor paints and plasters.

Hexion, Vanora Create New Biocide-Free Waterborne Binder Solution

Before C[O.sub.2] adsorption, this semicircle is attributed to the water vapor diffusion in high voltage condition.

A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for N[H.sub.3] and C[O.sub.2] Adsorption on Zirconia and Zeolite Type 5A

Assessment results revealed that experts give priorities to commonly used criteria: costs of insulation, thermal, conductivity, water vapor diffusion resistance and durability.

SELECTION OF THE INSULATION MATERIALS FOR REFURBISHMENT PURPOSES

Other important materials are mineral aggregates; in this issue investigations for rock texture and composition of it are studied to understand the water vapor diffusion, as well as the vapor sorption in composite materials.

Novel Technologies and Applications for Construction Materials 2016

For the water vapor diffusion in the moistened pores, the effective thermal conductivity ([k.sub.pd]) is determined from the thermal conductivity due to water vapor diffusion ([k.sub.diff]), which takes into consideration the heat transfer due to the evaporation occurring at the warm side of the pore, and condensation at the cold side.

An Experimentally Validated Model to Predict the Thermal Conductivity of Closed-Cell Pipe Insulation Systems with Moisture Ingress

The 15 selected papers discuss such topics as hydraulic testing, flow rate measurement, water vapor diffusion through polymeric barriers, measuring interface transmissibility, peel and shear test comparison and geosynthetic clay liner shear strength correlation, boundary effects of the gripping system on internal shear strength tests, and the geosynthetic concrete composite mat.

Current and Future Practices for the Testing of Multi-Component Geosynthetic Clay Liners; select papers

Where [D.sub.v] = 2 3.4 x [10.sup.-6] [([T.sub.k]/273).sup.2.3], is the water vapor diffusion coefficient; [P.sub.sat] = 610.8 x exp (17.08085 x T/234.175 + T), saturation vapor pressure; [P.sub.amb] is the ambient pressure; [h.sub.v] is the latent heat of evaporation; [R.sub.v] is the gas constant.

An experimentally validated model to predict the thermal conductivity of closed-cell pipe insulation systems with moisture ingress

Water vapor transport was characterized by water vapor diffusion permeability [delta] (s), diffusion coefficient of water vapor D ([m.sup.2]/s), and water vapor diffusion resistance factor [mu] (--).

Service life assessment of historical building envelopes constructed using different types of sandstone: a computational analysis based on experimental input data