The Forestry Forum

General Forestry => Drying and Processing => Topic started by: woodhick on September 18, 2005, 09:33:31 PM

Title: Radio frequency drying
Post by: woodhick on September 18, 2005, 09:33:31 PM
I am looking for any information on this type of drying.  I have the Dry Kiln Operators Guide.  Looking for any other books or training materials for this.  Any one have any ideas? :P :P
Title: Re: Radio frequency drying
Post by: Den Socling on September 19, 2005, 07:23:40 AM
IMO, it's a dead technology. It's expensive to build, operate and maintain RF oscillators. The dielectric field is never equal throughout the charge so some ares dry while others are left wet. It can be difficult to control power and the resulting drying rate. And you can't have much humidity control. None of the RF kilns I've seen had any.
Title: Re: Radio frequency drying
Post by: Don_Lewis on September 19, 2005, 07:31:11 AM
I agree with Den. There have been lots of companies start over the last 25 years and they sell a few but they have all faded away for the various reasons he cites. It is sexy and gets a lot of interest but no-one ever seems to think it through logically until they discover they can't make any money with it.
Title: Re: Radio frequency drying
Post by: serg on September 19, 2005, 09:12:34 AM
 Hello! Russia institute of a wood, it is cunning 5 years of time, 4500 0000 $.
Dries up to 23 % of residual humidity, the flame in middle a board is farther. 
Trade in Russia is not present. Sergey
Title: Re: Radio frequency drying
Post by: old3dogg on September 19, 2005, 06:58:10 PM
Oh come on Den! Whats wrong with an RF?V kiln?
Remember when #23 threw me 10 feet out the door with 480 volts?
Den and I could tell you a lot of neat stories about those crazy RF/V kilns!