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Author Topic: Nyle L53 Kiln Start Up  (Read 958 times)

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Offline WDH

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Re: Nyle L53 Kiln Start Up
« Reply #20 on: December 03, 2017, 07:24:59 am »
Yes.
Woodmizer LT40HDD35, John Deere 2155, Kubota M5640SU, Nyle L53 Dehumidification Kiln, and a passion for all things with leafs, twigs, and bark.  hamsleyhardwood.com

Offline GeneWengert-WoodDoc

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Re: Nyle L53 Kiln Start Up
« Reply #21 on: December 03, 2017, 06:16:05 pm »
Yes, the wood should dry and moisture leaving the wood will have to get out as liquid in a DH kiln.  If the vent runs, some moisture leaves as vapor.
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more

Offline maderahardwoods

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Re: Nyle L53 Kiln Start Up
« Reply #22 on: December 07, 2017, 04:07:45 pm »
Update:

Moisture content 13.5-18%, pulling less than 1 gallon  a day. 

DB 118-120 (its been cold)
WB: 86-88

-Marco

Offline maderahardwoods

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Re: Nyle L53 Kiln Start Up
« Reply #23 on: Yesterday at 09:43:08 am »
So I went 24hrs without pulling a drop of water so I decided to try another case hardening treatment as recommended by Nyle. But this time I dumped about 3 gallons of water on the floor and sprayed the slabs with water directly and set the kiln to 140F.  By Saturday 3PM I was in the high 130s and by 5PM I was at 140F. 

I let the kiln sit at 140F DB (106WB) for about 24hrs, at the 24 hr mark I opened up the doors and brought the temperature down to 120F and the WB dropped back down to 85, I then restarted the compressor. 

I checked the unit this morning and not a drop has been collected in the bucket.  I am assuming a lot of the moist air escaped with the when the high temp van kicked on as well as opening the doors. 

Does anyone have some experience the can share regarding kiln drying claro walnut?

I will take some moisture readings this afternoon.

Thanks,

Marco

Offline WDH

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Re: Nyle L53 Kiln Start Up
« Reply #24 on: Yesterday at 04:59:53 pm »
Sounds like that you are there.
Woodmizer LT40HDD35, John Deere 2155, Kubota M5640SU, Nyle L53 Dehumidification Kiln, and a passion for all things with leafs, twigs, and bark.  hamsleyhardwood.com

Offline maderahardwoods

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Re: Nyle L53 Kiln Start Up
« Reply #25 on: Yesterday at 10:56:49 pm »
So I took some readings after work. 

The shorter log is at: 13.3% left side, 16.4% right side
The longer log is at: 17.4% left side, 8.8% right side

WDH, do you think I am drier than I think? Possibly the pinless meter is reading inaccurately?

I am considering purchasing the Delmhorst J2000x kit. 

Thanks,

Marco

Offline YellowHammer

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Re: Nyle L53 Kiln Start Up
« Reply #26 on: Today at 12:33:02 am »
Sounds normal if it was stalled black walnut.  It could also be the meter. 
If the wood is at 17% you should be able to feel it as wet simply by touching it, as well as by weight.  It will also look noticeably darker due to the moisture.  Conversely, when wood is at 8% or lower, it is noticeably dry to the much.   

I never liked pinless meters for rough sawn lumber.  Delhmorst makes a good unit.

Considering the value of walnut, when in doubt, use the oven dry method. It's dead on, and quite fast measure the weight of a sample board of every day.   Even if you get a meter, always check it by the oven dry method occasionally.

It's hard to devise a strategy unless the moisture content is accuratly known.   

I like 150F for stalled wood, no extra water on the floor, zero compressor.  Closed vents.  Let it stand at temp for a day or two.  Open the door and see if the wood is "sweating".  When you open the door, you will get hit with a blast of hot humid air, and will see a noticeable moisture sheen on the surface of the boards that flashes off instantly.  The moisture has come from the core of the wood and it will be drier.   

Again, this is the strategy for me on stalled black walnut. 

 
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Offline WDH

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Re: Nyle L53 Kiln Start Up
« Reply #27 on: Today at 07:16:51 am »
Make sure that your compressor has not tripped from too high temp, over about 133 degrees.  Take the side panel off and press the little green button to re-set.
Woodmizer LT40HDD35, John Deere 2155, Kubota M5640SU, Nyle L53 Dehumidification Kiln, and a passion for all things with leafs, twigs, and bark.  hamsleyhardwood.com