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71
Training / Events / Southeastern Dry Kiln Club & Ohio Valley Lumber Drying Assoc. Fall Meeting
« Last post by admin on September 29, 2017, 09:29:24 AM »
Fall 2017 Joint Meeting of the
Southeastern Dry Kiln Club and the
Ohio Valley Lumber Drying Association
FALL 2017 MEETING                                                                        Today: Sept. 29, 2017   
 
WHEN:           Thursday, November 2 - Friday, November 3, 2017
WHERE:         Technical Session at Courtyard by Marriott Knoxville Airport,
141 Furrow Way, Alcoa, TN 37701  (865) 977- 8333
Havco Wood Products, Vonore, TN
Genera Energy, Vonore, TN
Benton's Country Hams, Madisonville, TN
 
Thursday - November 2, 2017
 
12: 00 PM - 1:00 PM Registration (Courtyard Marriot Hotel)

Technical Session

1:00 PM - Dr. Gene Wengert - Quality Drying Options and Techniques Prior to Kiln
                                    Drying: Detailed Description, Pros and Cons (emphasis on oak).

2:15 PM - Dr. Adam Taylor - UT Research and Phytosanitation

3:15 PM - Break

3:45 PM - Mr. Tommy Stiles - Kiln Maintenance

4:45 PM - Stress Relief

6:00 PM - Dinner & Business Meeting in meeting room.

7:30 PM - Refreshments in Hospitality Suite
Friday, November 3, 2017

Plant Tours

8:00 AM - Breakfast to go. Provided with registration.

8:30 AM - Leave Hotel for Havco, 150 Oak Hill Ln, Vonore, TN 37885

9:15 AM - 10:30 AM - Tour Havco

10:45 AM - 11:45 AM - Tour Genera Energy, 167 Tellico Port Road, Vonore, TN 37885

12:00 PM - 12:45 PM - Tour Benton's Hams, 2603 Hwy. 411 North, Madisonville, TN

12:45 PM - Meeting adjourns

REGISTRATION:  To preregister download the registration form (click here).   Registration Deadline is October 27, 2017.  The registration fee is $80 per person  (Late registration is $100 per person).  Registration for this SEDKC meeting is being handled by the Ohio Valley Lumber Drying Association: Please make checks payable to: Ohio Valley Lumber Drying Association.
 
HOTEL:  A small block of rooms has been reserved on a first come basis at the Courtyard by Marriott Knoxville Airport. The room block will be released on October 25th. Reservations can be made by calling the Courtyard Marriott (reduced rate of $89) at 865-977-8333.
Please use the group code OVLDA.
 
72
Dry Kiln Control / Looking for input regarding Steam Management
« Last post by TILLAMOOK on September 27, 2017, 10:29:18 AM »
Robbing Peter to pay Paul? Peter is starting to get upset.
73
General Discussion / Re: Kiln Baffling
« Last post by MichaelM on September 22, 2017, 08:52:40 PM »
I agree with Ingro that it is best to baffle each of the four rows.  If this is not possible, try to put a full row in the front and back with the short units in rows two and three.  Offset the gaps in those rows.  I am assuming that these are package kilns and that the row spacing is small (a few inches). 
Do checks at the planner to see in there is unit-to-unit mc variability.
Mike M
74
General Discussion / Re: Kiln Baffling
« Last post by HencoV on September 22, 2017, 07:08:27 AM »
Hi Ryan,

Ingo is correct.  We have found that bad / insufficient baffling can extend drying times substantially. The net effect of big gaps where the air can short circuit past /over the stack not only effect the true wet bulb reading because of more turbulance, but also contribute to patchy drying
75
General Discussion / Re: Kiln Baffling
« Last post by ingo wallocha on September 18, 2017, 04:13:54 PM »
Hello Ryan,

All rows should be baffled. That applies to the side and to the top baffles.

Regards,

Ingo
76
General Discussion / Kiln Baffling
« Last post by RyanMCL on September 14, 2017, 07:35:33 AM »
We have two kilns, 23 feet wide, that we load 4 units of lumber high, 4 deep, and usually 2 units wide.  I say usually, because the lumber is most often 8 ft long, but sometimes we get 7 and 6 foot units as well.  In order to direct airflow through the units when the width of the units is well under the kiln width, would I want to put a baffle on the side of each of the 4 rows? or just front and back? Having 5-7 feet between units and the wall can't be helping airflow go through the wood.

The same question applies to the top of the units as well.
77
Dry Kiln Control / Re: Dry bulb, Wet bulb & RH calculations
« Last post by HencoV on September 11, 2017, 03:31:15 AM »
..The Higher the temperature and RH, the smaller the error...
78
Dry Kiln Control / Dry bulb, Wet bulb & RH calculations
« Last post by HencoV on September 08, 2017, 05:59:14 AM »
@ the forum experts...
I am trying to get a meaningful calculated Wet bulb value from an RH & temperature probe. Problem is..when calculating WB from DB & RH, I get one value. (formula using iteration from https://www.weather.gov/epz/wxcalc_rh) Testing the RH value using DB & calculated WB gives a different RH (http://www.1728.org/relhum.htm)..also, I have an excel spread sheet that I've been using all along to calculate RH& EMC. The answers I get from excel corresponds with 1728.org.

eg. weather.gov...DB 60 deg C, RH 30.1% = WB 36.31 Deg C
1728.org & my spread sheet: DB 60 Deg C, WB 36.31 deg c = RH 22%

btw..The reason i'm trying to calculate a WB value from an RH probe is to control vent on WB ...not on RH or EMC, as it fluctuates to much with DB temp fluctuations
79
Stacking/Sorting Wood / Re: Tools for fixing stickers in loads
« Last post by RBeeson on August 16, 2017, 02:17:03 PM »
Good question
80
Dry Kiln Control / Re: Is my kiln schedule not long enough?
« Last post by MichaelM on July 28, 2017, 12:50:50 PM »
Kevin,

High MC in the center is not the root cause of the cupping. 

There is stress in kiln dried lumber.  The stress is relieved during a conditioning process during which the wood is exposed to an equilibrium moisture content about 4% greater than the target moisture content.  This is easily accomplished when the target MC is 10% or less.

It is difficult to get the EMC in the kiln high enough if the wood is greater than 10% moisture content.  So the cupping in the wet wood is likely due to stress.

I would also guess that the cupping has some time delay - it might take 6 to 12 hours for it to fully cup.  This is partly due to the MC change as you suggest, but it is also due to the viscoelastic nature of the wood.  There would be a time delay even if there was a uniform MC throughout the piece.

Hope this helps.
Mike M.
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