Radio Frequency Company, Inc., industrial RF processing systems for rapid heating and drying of materials

HIGH FREQUENCY HEATING AND DRYING SYSTEMS

MACROWAVE™ HEATING AND DRYING SYSTEMS ASSURE UNIFORM, VOLUMETRIC HEATING
WHETHER CONVEYED ON A TROUGHED CONVEYOR BELT OR PROCESSED IN BATCH TOTES
UP TO 42 CU. FT. CAPACITY

Macrowave Power and Bulk Heating and Drying Systems

Benefit of Macrowave™ Drying:

PRECISE MOISTURE CONTROL: Selectively heats products where the moisture content is the highest. The product output will be uniform throughout, reagrdless of the non-uniformity going on.
SPEED AND UNIFORMITY: Heating occurs instantly and uniformly throughout the material. No temperature differential is required to force heat, via conduction, from the exterior of a product to the interior.
INCREASES PRODUCTION THROUGHPUT: Product throughput on many applications can be increased 50% to 100%.
OTHER BENEFITS: Energy savings and floor space savings.

Applications which can benefit
from Macrowave™ heating:

Drying of Filter Cake.
Pasteurization of Food Products.
Drying, Heat Treating and Curing of Bulk Materials.
Deinfestation of Agricultural products.
Macrowave dryers conform to OSHA and FCC standards and carry the UL-approved label.

HOW RF HEATING WORKS

In a Radio Frequency heating system, the RF generator creates an alternating electric field between two electrodes. The material to be heated is conveyed between the electrodes, where an alternating energy field causes polar molecules in the material to continuously reorient them to face opposite electrodes much like the way bar magnets move to face opposite poles in an alternating magnetic field. Friction resulting from this molecular movement causes the material to rapidly heat throughout its entire mass.

The illustration below depicts a radio frequency drying system with material between the electrodes. Polar molecules within the material are represented by the spheres with plus (+) and minus (-) signs connected by bars.

Response of polar molecules in an electric field

The amount of heat generated in the product is determined by the frequency, the square of the applied voltage, dimensions of the material and its dielectric loss factor which are essentially measures of the ease with which the material can be heated by radio frequency waves.

The very rapid and precisely controllable RF heating process offers the advantages of reduced processing times, consistent quality, and simplified process control.

Founded in 1946, Radio Frequency Company specializes in developing and manufacturing high frequency heating systems to improve efficiency in many industrial applications. RFC is a technological leader in the development of R.F. heat processing systems and is known for the highest standards of quality in equipment and service.