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Author Topic: Radio frequency drying  (Read 1395 times)

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Offline woodhick

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Radio frequency drying
« 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
Woodmizer LT40 Super 42hp Kubota, and more heavy iron woodworking equipment than I have room for.

Offline Den Socling

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Re: Radio frequency drying
« Reply #1 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.

Offline Don_Lewis

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    • nyle
Re: Radio frequency drying
« Reply #2 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.

Offline serg

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Re: Radio frequency drying
« Reply #3 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

Offline old3dogg

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Re: Radio frequency drying
« Reply #4 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!


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