vimet(ビメット)

これでBBQも可能!? 原始科学のアニキが再利用できる“木炭窯”を作った

2017-06-20 01:15:35

*Turn on captions for written commentary (CC in bottom right corner of screen). Charcoal is a valuable fuel that reaches a higher temperature than the very wood it’s made from. I’ve made some before, but with supplies running low due to furnace experiments, I decided to make another large batch of charcoal in a mound. I stacked the wood into a roughly conical shape (about 1 m wide and 75 cm high) and then built a thick wall of mud around the heap (this took 6 hours). Eight air entries were made in the base of the mound and one air exit hole was left at the top of the mound to allow the volatile components of the wood to escape while creating a natural draft to keep everything burning.
The mound was lit and the flame burned backwards down the heap in the opposite direction to the draft. This protects the coal made above the level of the fire from burning as carbon dioxide rushes past instead of oxygen, preventing combustion of charcoal. Each air entry was sealed only when fire became visible through them. This is an easy way to tell when to close them up, i.e. when the fire had burned down all of the wood in the heap. When the last air entry was closed, the air exit at the top of the mound was sealed, 5 hours after starting. The next day when cool, a large arched opening was made in the side of the mound to extract the charcoal. Despite a few unburnt brands the yield and quality was good filling almost 2 baskets.
To see if the kiln was reusable, I restacked it with timber cut from a fallen gum tree branch up the mountain. Due to the difficulty in reaching into the mound I stacked the wood in criss-crossed horizontal layers. The opening was sealed with mud and the mound lit as before. This time the mound burned quickly and I had to seal it early as the timber was burning at different rates, 3 hours after starting. Some large logs remained unburnt while charcoal that had already formed started to burn up being wasted as ash.
When I opened it the next day it had still produced an ok amount of charcoal but was disappointingly low compared to the first batch. This may partly be due to some of the wood being still green though it’s probably more likely to be due to how it was stacked. The lesson here is that when making charcoal the wood needs to be tightly stacked with few air spaces between. If not, the mound admits too much oxygen that quickly burns the timber.
Another thought I had was that wood may convert to charcoal better if laid vertically (or roughly so, like the cone in the first firing) so that the fire starts at the top of the wood and burns down. Stacking the wood in horizontal layers means that each layer has to set the one bellow alight leading to problems if the wood is green (use dry wood if stacking horizontally). By stacking wood vertically each piece is alight already and simply burns down towards the air entries. Stacking in this way also makes it easier to see fire in the air entries letting you know when to seal the mound.
For the reasons above I may make another charcoal kiln in future in the shape of a cylinder with air entries around the base and an open top. The kiln would be re-usable and easily stacked. A conical pile of wood would protrude above the walls of the kiln and be plastered in a temporary cover of mud. The kiln would be fired as with a normal mound and when finished the temporary cover of mud would be removed to extract the charcoal
Wordpress: https://primitivetechnology.wordpress.com/
Patreon page: https://www.patreon.com/user?u=2945881
I have no face book page, instagram, twitter etc. Beware of fake pages.


まだまだあるよ!話題の動画

【衝撃】学生時代に大嫌いだったこと8選

2017-11-23 19:47:26

海外「日本のセルフ食堂でうどんを食べてみた結果w」→「羨ましすぎる!」海外の反応

2017-11-23 18:17:44

心温まる動画「大切な家族を包む、その手。」公開!

2017-11-23 10:49:18

11/23勤労感謝の日にふさわしいフェイクニュース映像

2017-11-23 08:19:59

夢アド、第2章の幕開けとなるライブ開催決定!

2017-11-23 00:49:01

浜辺に打ち上げられた謎の難破船。その正体は幽霊船となっていたリュボフィ・オルロヴァ号なのか?

2017-11-23 00:17:44

竹内まりやが「元気を出して」のMVで鉄拳とスペシャルコラボ!

2017-11-22 18:17:35

海外「トヨタが発表した新型ロボット『T-HR3』がすごい!自分の分身のように操縦できるらしい」海外の反応

2017-11-22 16:30:50

日本全国のお坊さんに「生き抜く智慧を学ぶ」旅

2017-11-22 16:17:41

【アメフト】カメラマンも騙された驚愕のトリックプレーが決まる!

2017-11-22 15:48:55

知られざる香港の魅力!? フォトジェニックな香港旅行「グレート・アウトドア香港」キャンペーンスタート!

2017-11-22 14:20:31

あまずっぱ…♡サザエさんとマスオさんの高校時代を描いた日清のCMが青春すぎる【いい夫婦の日】

2017-11-22 14:23:28

『Amazon Echo』と『Google Home』にピカチュウ同士でしゃべらせる動画をツイートしたら世界中で話題になっている件(本人)

2017-11-22 14:17:56

わたしの「水曜日」と誰かの「水曜日」を交換する、ふしぎな郵便局

2017-11-22 12:17:35

海外「日本車の性能はこんなことも可能にしてしまうらしい・・・」海外の反応

2017-11-21 20:24:36

海外「自転車が大好きなスウェーデンの柴犬さんが可愛いw」海外の反応

2017-11-21 16:43:01

海外「このレスリングの審判の動きが凄いwwwwww」海外の反応

2017-11-21 14:32:41

青山繁晴「日本には北朝鮮の工作員が2万人潜り込んでいる」

2017-11-21 14:25:41

【動画】映画『デッドプール2』、トレーラーで『ボブの絵画教室』のパロディ映像を公開

2017-11-21 14:29:47

いきなり試練…「世界一提出が困難な婚姻届ツアー」開始

2017-11-21 12:56:35

EXILE TAKAHIRO「様々な表情を楽しんで」ソロ新作MV公開

2017-11-21 10:53:09

「その顔でこっち見ないでニャ!」泥パックをしている飼い主さんにブチギレる猫ちゃん

2017-11-21 10:19:11

【衝撃】野生動物の攻撃から身を守る方法7選

2017-11-20 21:46:51

海外「これが日本式の掛け算?とある計算法が独特で面白い!」海外の反応

2017-11-20 16:26:21

【MLB】インスピレーション溢れるメジャーの珍プレーを集めてみた!!

2017-11-20 15:47:37

原始的な道具だけを駆使して海水から塩を作ってみた!!

2017-11-19 22:50:42

ニンテンドースイッチ向け『ポケモン』新作は既存シリーズをぶち壊すような作品に!? ゼルダやマリオ最新作の成功を受け

2017-11-19 20:52:31

海外「日本の高級ぶどうを実際に買ってみた結果・・・」海外の反応

2017-11-19 16:17:33

海外「ネコとトラが初めて対面したらこうなったw」海外の反応

2017-11-19 14:21:46

『ホーム・アローン2』25周年記念 ニューヨークの“プラザ ホテル”が『Live Like Kevin』と銘打った宿泊パッケージを発表

2017-11-19 14:17:51

大好きなお兄ちゃんのお風呂が終わるまでずっと待っているネコさんの姿が健気で可愛い

2017-11-19 08:18:01

iPhoneの新機能「緊急SOS」で命拾いした体験談

2017-11-18 20:17:38

海外「日本の非常食のレベルをご覧ください」→「アメリカにもあったら・・・」海外の反応

2017-11-18 18:20:30

海外「鳥肌が立った!」日本人による新型スーパーカーに米人気人気司会者が乗ってみた結果

2017-11-18 18:17:54

海外「電気自動車化したAE86でドリフトしてみたwww」海外の反応

2017-11-18 14:17:57

「初音ミクシンフォニー2017」初の大阪公演は大盛況

2017-11-18 12:52:26

芸大生がコマ撮りで制作!修了制作展のプロモーションムービーが話題

2017-11-18 12:49:08

コミュニケーションロボット『Xperia Hello!』レビュー 表情や仕草がスマートスピーカーより親しみやすさを感じるポイントに:動画あり

2017-11-18 12:20:50

「最後に乗ってもいいですか」閉園するスペースワールドのCMにグッとくる

2017-11-18 10:21:32

壁やドアも登れる!? 上野動物園シャンシャンに触発された『くっつきパンダ』がクラウドファンディング中

2017-11-18 10:17:49