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Why Does Wood Pop When Burning. Gas is created by trapped moisture locked in small pockets within the wood. These air pockets fill narrow passages within the wooden log.
Moisture content that is trapped within the wood can cause a fire to pop. See answer (1) best answer. Trapped moisture can also cause wood to pop and crackle from the creation of steam.
The popping noise occurs when air pockets in the wood are released. As the gas escapes, the fire will emit an audible pop or crack. Some will get stuck in the wood.
Gas is created by trapped moisture locked in small pockets within the wood. In basic terms, it has something to do with the combustion gases escaping from the wood. All trees need to take in water to survive.
Trapped moisture can also cause wood to pop and crackle from the creation of steam. Once the gas pressure builds up it will create an energy burst with mini explosion. Although your piece of wood may look and feel quite dry, it definitely has some moisture locked inside of it.
This same principle rings true when burning wet or moist firewood. These air pockets fill narrow passages within the wooden log. Firewood popping occurs when burning wood has a high moisture content.
Hence, there will mostly be some moisture in the wood. As the wood burns the moisture is heated, and as the moisture is heated it expands and turns into gas. Unlike wood, water doesn’t convert into heat when burned.
