Moisture accumulation due to air

With Scandinavian stacking practice, the end zones of the stack dry faster than the central, fully filled part (Salin and Ohman, 1998). The lower air velocity in the ends is more than compensated by higher heat-transfer coefficients associated with the flow disturbance and smaller wood volume. (There is a smaller decrease in temperature and increase in humidity along the stack in the airflow direction.) In general, it is expected that the local transfer coefficients diminish with distance in the airflow direction due to a thickening of the boundary layer. This variation and the downwind accumulation of moisture in the airstream result in the maximum possible evaporation rate dwindling with distance from the air inlet to the air outlet from the stack. 

Moisture accumulation. Some textile fibers (eg, cotton, wool) are hydrophilic in nature. Due to this, a fabric may absorb moisture (sweat) generated from wearers bodies and accumulate it in its structure. The thermal conductivity of moisture is much higher than the thermal conductivity of air or fibers. This may cause rapid transmission of metabolic heat from wearers bodies to the ambient environment that can result in better thermal comfort for wearers under some conditions (Barker et al., 2006 Song et al, 2011). In this context, it is necessary to remember that absorbed moisture in cotton and wool may not always increase the amount of interstitial free water inside the fabric and this situation may not cause the rapid transmission of metabolic heat from wearers bodies. Additionally, rapid loss of metabolic heat may not always lead to thermal comfort for wearers. 

---