This forum is now closed and archived but the many helpful kiln-related topics are still available to view.
Please feel free to read through the archive or visit www.wagnermeters.com
for more detail about our wide array of moisture measurement solutions.

Author Topic: Drying Time for Different Thicknesses of the Same Wood Species  (Read 8910 times)

Offline JMS

  • Newbie
  • *
  • Posts: 16
    • View Profile
Drying Time for Different Thicknesses of the Same Wood Species
« on: September 14, 2012, 09:45:24 AM »
Is there any rule of thumb method for estimating the drying time for different thicknesses of a species if you know the required time for one thickness?

Offline MichaelM

  • Forum Expert
  • Kiln Drying Enthusiest
  • *****
  • Posts: 98
    • View Profile
Re: Drying Time for Different Thicknesses of the Same Wood Species
« Reply #1 on: September 14, 2012, 10:29:59 AM »
Depends on MC.  At high MC, the rate of MC change is proportional to thickness.  At low MC, it is proportional to thickness squared.  Some texts say use the 1.5 power.  So if thickness goes from 1.6" to 2.2" then the time increases by a factor of (2.2/1.6)^1.5 = 1.61 or it takes 61% longer.  I usually think this method overestimates the time a bit.

Offline JMS

  • Newbie
  • *
  • Posts: 16
    • View Profile
Re: Drying Time for Different Thicknesses of the Same Wood Species
« Reply #2 on: September 17, 2012, 03:22:17 PM »
Thanks Mike,
This information is extremely helpful.   
I appreciate the feedback.


 


Search


* Forum Experts

MichaelM MichaelM
Forum Expert
TimothyD TimothyD
Forum Expert
PhilM PhilM
Forum Expert
StavrosA StavrosA
Forum Expert

* Subscribe to Newsletter

* Upcoming Events

Sorry! There are no calendar events available at the moment.
\
SimplePortal 2.3.6 © 2008-2014, SimplePortal