smokeless fire pit how does it work

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Smoke is caused by little bits of the burning material which flake off and are carried into the air by the updraft of the flame. More smoke is produced by incomplete combustion, and combustion is helped by having access to more air. If you wanted to produce more smoke from a fire you would try to restrict its access to air such as by covering it with damp branches. To reduce the amount of smoke you would want to increase the fire's access to air, which is done by raising the fire and putting air holes underneath it. This allows it to steadily draw in fresh, cool air which allows the fuel to burn completely instead of becoming smoke particles. A similar technique can be used in the wild to make a stealthy fire. Two holes are dug and connected by an underground tunnel. A fire is built in one of the holes below the level of the ground, which prevents the flames from being seen from a distance. The other hole and tunnel allows fresh air to be drawn in near the base of the fire which again reduces the amount of smoke it produces. Answer from Phage0070 on reddit.com

reddit.com › r/explainlikeimfive › eli5: how do smokeless fire pits work?

r/explainlikeimfive on Reddit: ELI5: how do smokeless fire pits work?

May 19, 2023 -

How do smokeless fire pits work if they burn wood? (I.e solo stove)

Top answer

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Smoke is caused by little bits of the burning material which flake off and are carried into the air by the updraft of the flame. More smoke is produced by incomplete combustion, and combustion is helped by having access to more air. If you wanted to produce more smoke from a fire you would try to restrict its access to air such as by covering it with damp branches. To reduce the amount of smoke you would want to increase the fire's access to air, which is done by raising the fire and putting air holes underneath it. This allows it to steadily draw in fresh, cool air which allows the fuel to burn completely instead of becoming smoke particles. A similar technique can be used in the wild to make a stealthy fire. Two holes are dug and connected by an underground tunnel. A fire is built in one of the holes below the level of the ground, which prevents the flames from being seen from a distance. The other hole and tunnel allows fresh air to be drawn in near the base of the fire which again reduces the amount of smoke it produces.

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In a fire, smoke and soot are the result of poor (incomplete) combustion, usually caused by a lack of air to react with the fuel. You can make a fire relatively smokeless by providing sufficient airflow to it. A "smokeless" firepit like the solo stove has the fuel placed on a slightly raised area, contained by a metal shield. The shield has lots of holes punched in the bottom, which provides a lot of air directly to the fuel and helps it all burn completely. In contrast, most firepits or campfires are basically right on the ground or in a small pit. This reduces the amount of air that can reach the fuel, as it has to flow downward, against the current of hot air coming from the fire, to reach the fuel. This causes incomplete combustion and a smoky fire. However, it also has the benefit of burning fuel more slowly, which helps you stretch a small bundle of logs for a lot longer. A "smokeless" firepit will burn cleaner and faster, which means you'll need a lot more fuel to feed a fire of the same size as a campfire for the same duration.

The Charming Bench Company

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How Does Smokeless Fire Pit Work? Here's What You Need to Know - The Charming Bench Company

A smokeless fire pit is a wood-burning fire pit that burns firewood so efficiently that it causes very little smoke. Smoke appears when firewood doesn't burn hot enough, as in a conventional fire pit, and the wood doesn’t ignite and combust.

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