Day 47 - Kiln Results!

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  • เผยแพร่เมื่อ 23 ธ.ค. 2024

ความคิดเห็น • 42

  • @lithgowlights859
    @lithgowlights859 ปีที่แล้ว +5

    What you are looking at is Relative Humidity - As the air heats up the humidity will drop even though the actual amount of water in the air does not change, as hot air can hold a lot more moisture than cool air (Thats why we get dew on the ground on cooler mornings). If you look at Absolute humidity, which is a tab on the screen, then that is the % of moisture in the air that it can hold relative to the temperature, so until the absolute humidity gets reasonably high, maybe 20-30%, you may not need the fan cutting in as the air has the ability to hold a lot more moisture as long as there is decent air circulation with the fan on the top of the container.

  • @richpbrown2
    @richpbrown2 ปีที่แล้ว +4

    Might be worth asking your sparkie to add a remote start stop button for the hopper conveyor so you can have it near the bag and then the person at the bag end can control the flow easier

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว +1

      Good idea. Maybe just extend the lead and have it on a magnet

    • @richpbrown2
      @richpbrown2 ปีที่แล้ว +1

      @@oakfarmfirewood I run a joinery shop and we have multiple controls on flying leads for the extractors and we simply Velcro them to the machines. Easier, safer and saves time

  • @Dan.Whiteford
    @Dan.Whiteford ปีที่แล้ว +1

    Here is something to think about for the future to reduce running costs. The technique is used in some static continuous corn dryers.
    The basic idea is that you use some of the heated dry air that is available end currently being exhausted to waste (especially when cooling a kiln) is to divert this air to prewarm and pickup a fresh load of surface moisture off wood in an adjacent kiln before it is eventually exhausted to atmosphere.

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว

      True but at the start of the batch you are venting off very wet air don’t think it would do much drying

  • @mrg8537
    @mrg8537 ปีที่แล้ว +8

    Do you ever look at the absolute humidity? Hot air can hold a lot more moisture than cold air so even if the absolute humidity is the same the relative humidity will always be lower when it is hot and higher when it is cold

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว

      I’ll check it out thanks

    • @PietroZambon
      @PietroZambon ปีที่แล้ว

      ​@@oakfarmfirewoodyeah, I think you should check the absolute humidity option 20:17 , it will be far more useful to you.
      The relative humidity shoots up that high because the temperature drops so much. I think that if you switch to absolute you'll see it won't shoot up as much.

  • @WoodchuckCanuck
    @WoodchuckCanuck ปีที่แล้ว

    4-5 days is what I have been averaging in our firewood kiln. That's with 40cm long wood pieces that were split and stacked to air dry back in Jun/Jul 2023. The MC of these are averaging 35%. We target for 50ºC as well, but our heater is electric so it takes longer to achieve. Today we put a batch in and the temp of the wood and air going in was 6ºC, MC was 31.5%. It will take about 36 hours to reach 50ºC. When it reaches 50ºC I shut off the electric heat. There's enough residual heat coming from the dehumidifier compressor and the 3 overhead fans to keep the air temp at about 45ºC. And generally 3 days after that the MC average is at 20%, which is our target for home heating. Our kiln bldg is small, it can only hold 1 cu m in per crate (8 crates total). I used to monitor humidity in the beginning, now I don't. Doesn't matter anymore really. I've run enough cycles through that I know how the kiln behaves. Only suggestion I would offer is run an experiment using tarps to force the air to flow through the crates rather than around them. You will find quite a difference in how quickly your overall thermal mass will reach the 50ºC and in doing so, you will wick moisture quicker. That's just based on experiments I have run over the last couple of years.

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว

      Very interesting, yeah I know a few people that run skirts etc to help drive air through the cages but I think it would be a pain for loading/unloading

  • @thefrugalhomestead7873
    @thefrugalhomestead7873 ปีที่แล้ว

    That was a great video lots information. I like how you're setting up to optimize your kiln runs.

  • @johnanthony7232
    @johnanthony7232 ปีที่แล้ว

    Great setup. What fans are you using for circulation? I’m having a hard time finding some

  • @wendellcarver9857
    @wendellcarver9857 ปีที่แล้ว

    What brand & model are those temp/humidity sensors? Great Operation

  • @brianirish3501
    @brianirish3501 10 หลายเดือนก่อน

    What app are you using to get that information

  • @simonward5820
    @simonward5820 ปีที่แล้ว

    You dont say mate what temp. you set the boiler too when you finish for the day. Would it be better to set your over night too say 55- 60 degrees and keep some heat in the kiln.
    Ive been experimenting with larger hardwood waste which lasts alot longer overnight.

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว

      Yes I normally set to 90 but Keith I’ll try 70

  • @compostjohn
    @compostjohn ปีที่แล้ว

    Those graphs are fascinating! Thanks.

  • @Neiljohnkellys
    @Neiljohnkellys ปีที่แล้ว

    Another informative video. What would be the maximum heat in C that the kiln needs to be for drying in a 7/10 days inside the kiln

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว +1

      Thanks it’s not all about heat but it definitely helps. Towards the end of the batch you can see 70-80c

  • @whit6119
    @whit6119 ปีที่แล้ว +1

    Hot air holds more moisture. So as soon as you start pumping hot air in the RELATIVE humidity drops. However there is still the same amount of moisture in there. And as soon as the temperature drops the RELATIVE humidity increases. This is exactly what you are seeing on your graph.
    You might need to look at ABSOLUTE humidify which is a measure of the actual amount of water vapor (moisture) in the air, regardless of the air's temperature

  • @andrewcax6907
    @andrewcax6907 ปีที่แล้ว +1

    Not at all your pumping the videos, dont be worrying!!
    Whats the brand of new humidity reader?
    Thanks as always getting so so much from you 🙏

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว +1

      No problem, they are called switchbot I got them off Amazon

  • @tomasdevine7756
    @tomasdevine7756 ปีที่แล้ว

    I spent the last few days drying timber on my stove. Throw a batch of clean wood on top does a great job any bugs try climbing upwards so I just throw them out as I see em. Can hear the wood crack but dirty firewood I won't bring indoors until burning it cos of bugs.

  • @tomasdevine7756
    @tomasdevine7756 ปีที่แล้ว

    See when you dry timber and then store inside a shed it takes back some moisture from the atmosphere, what's your take on that ?

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว

      Yeah it definitely does from ambient air moisture

  • @palkvalvik3177
    @palkvalvik3177 ปีที่แล้ว

    Dont be sorry fore honest work , the youtube dont pay your bills yet.. keep up the good work 🙂 all the best from NorthNorway

  • @GrahamFrench247
    @GrahamFrench247 ปีที่แล้ว

    I’d suggest a remote switch for your rollers, so the man on the bags can control both the rollers and the conveyor belt. It’ll make it yet more efficient.

  • @lifeontherez
    @lifeontherez ปีที่แล้ว

    I've seen this pop up as I was just heading out to my woodyard. I guess it can wait another 20 minutes 😂

  • @rossnolan2883
    @rossnolan2883 ปีที่แล้ว

    Super 🙂🙂🙂

  • @mjmtreeservicemaintenance2940
    @mjmtreeservicemaintenance2940 ปีที่แล้ว

    It seems you guys got a monster storm coming in or hitting you now. Stay safe.

    • @oakfarmfirewood
      @oakfarmfirewood  ปีที่แล้ว

      Yes rain rain rain. Views are about 10 days behind

  • @nachomoma2469
    @nachomoma2469 ปีที่แล้ว +1

    Ooooh 1$t like...whaaaat