Radio-Frequency Drying with 50-Ohm Technology

Enhanced diffusion of liquid and vapor moisture Coincidental temperature and mass concentration gradients Internal pressure gradient as an additional mass transfer driving force Stabilized material temperature at or below the liquid boiling point 

Electromagnetic energy is one of the forms of energy that is stored and transmitted by alternating electric and magnetic fields. It is propagated in space 

The power P absorbed in a unit volume of a dielectric material and dissipated as heat depends on dielectric properties of the material (mainly the loss factor e ) and the electromagnetic field parameters, i.e., the frequency / and the electric field strength E within the drying material 

The effective loss factor e is a fl equency-dependent parameter determined by the material properties that characterizes the ability of the material to absorb electromagnetic energy. It is defined as a product of the dielectric constant e and the loss tangent tan 8 (8 = phase angle between circuit currents) 

The through-field plate electrode system is configured as two flat metal plates between which the processed material is located. The electrodes can be in contact with the load (sometimes under pressure or vacuum), or an air gap exists, which is the case in a conveyor-type apparatus. 

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