Microwave drying
With microwave drying , a drying process , a wet building fabric is dehumidified directly. This is done by irradiating with high-energy microwaves , which cause the water molecules to move inside the building fabric. The resulting frictional heat dries the building fabric from the inside out. In the case of living organisms, this process, like any drying, is deadly; in addition, there is no dampening of the propagation of radiation with the water leakage. The method is only suitable for metal-free building fabric.
Application area
- local and poorly accessible areas
- strong masonry
- Aerated concrete
- Heavy concrete
advantages
- Drying is much faster than with condensation or adsorption drying; Damp building fabric can possibly be dried within a few days
- lower energy consumption for small areas than for the condensation or adsorption drying process
disadvantage
- very high energy consumption for large areas
- high use of personnel and machines
- high economic effort
- Local damage can occur in the material structure
- Risk of damage from microwaves (radiation risk):
Microwaves create their effect through the asymmetrical structure of the water molecules . If the irradiated building fabric is already completely dry, but further irradiation takes place, there is a risk that the microwaves can get into the room and cause personal injury and property damage. Furthermore, there is a risk that metal parts in the building will be irradiated that were not found before the drying process. Depending on the dielectric properties of the metal, considerable local heating or voltage flashovers can occur. Due to the dangers mentioned, this method should only be used by very well trained personnel and in compliance with high safety precautions.