The subject of drying is massive but this is a simple friendly explanation which might help some and I will apologise now for the obvious bits.
Surfaces stay saturated because there is a heavy wet barrier of air very close to the surface restricting the evaporation rate. Air movers are simply used to remove that wet barrier allowing the underlying saturated surface to evaporate rapidly as wet air is renewed with dry.
Whilst drying, the evaporating moisture tries to reach an equilibrium by saturating the ambient dry air in the room, like a dry sponge next to a wet sponge the water will migrate across until both are equally wet.
The water is still there, but now its everywhere helped by the air mover. Unless the ambient dry air in a room has the capacity to absorb the moisture and without ventilation or dehumidification to cope, the dry air itself becomes heavy with moisture restricting the speed of evaporation and therefore slowing the drying time.
Raising the temperature of the ambient dry air seriously improves its ability to absorb moisture allowing more grains of water to kilo of air (yes air has a weight)
initially improving drying time as the moisture can evaporate quicker. However this also means that saturation levels are reached much much faster and without adequate ventilation to match, not only will drying slow down just as quickly but the risk of secondary moisture damage increases dramatically as the air has far less time to renew itself.
And the point is!!
The key to drying using air movers on their own is therefore to replenish the damp air often by ventilation (when climate allows) or increase the volume of dry air by opening internal doors so you are using the volume of the property not just the room.
Hope that made sense
