Readers ask: How To Make A Secondary Combustion Wood Stove?

How do you put a secondary burn on a wood stove?

Secondary burn works by burning off the initial smoke produced from the fire that otherwise would have gone up the chimney. You will often see a series of holes towards the top rear of the stove above the fire box that forces fresh oxygen over the chamber, reigniting this smoke.

What is secondary combustion in a wood stove?

Secondary burn or combustion on a wood stove is the process of burning off waste gases higher up in the stove in order to produce more heat and to reduce emissions. A second feed of air over the fire in a wood stove firebox helps secondary burn to occur.

What does secondary combustion look like?

After 5-10 minutes you should see blue and red flames flickering and ‘dancing’ horizontally at the top of the fire or the top of the glass. This is what you are looking for. It’s called secondary combustion. Yellow ‘campfire like’ flames aren’t what we want.

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What is secondary combustion air?

The primary air is heated up to about 170°C by means of a heat exchanger with the exhaust gas. The secondary air is the postcombustion air injected into the upper part of the combustion chamber and is necessary for completing the combustion process.

How can I make my old wood stove more efficient?

How to improve your wood stove’s efficiency

  1. Get the chimney right. The chimney is a vital part of the overall wood burning stove.
  2. Keep the chimney clean.
  3. Think about positioning.
  4. Use dry wood.
  5. Use the ‘top down’ lighting method.
  6. Wait, don’t just throw on logs.
  7. Make sure it’s cold outside, or warmer inside.

What is tertiary air for a stove?

Tertiary Air = Pre heated air comes in through air bars on the back of the stove, tertiary air is not controllable, but is there to inject more oxygen and air into the chamber to improve the efficiency as it is burning as well as providing the air for the secondary combustion, where the gases from the primary

How do I get the most heat out of my wood stove?

To get the most heat from your stove, try burning hardwoods such as ash, hawthorn or yew. The only downside is that as they are denser, they take longer to season than softwoods, often making them more expensive. If it works out better for you, you can buy a large quantity of ‘wet’ logs and season your own firewood.

Why is my solo stove smoking?

Is the fire in your Solo Stove still smoky? Solo Stove fire pits are designed to be virtually smokeless, but there are a few factors, such as damp wood, ash buildup, and using too much firewood, that can prevent the airflow in your Solo Stove from doing its job to eliminate smoke.

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What is a secondary flame?

The terms primary air and secondary air are not just arbitrary terms. When burning Hydrocarbon fuel there are two reactions taking place within the flame. The Secondary reaction is the conversion of the Carbon monoxide to Carbon dioxide, both are exothermic reactions.

What is the combustion of wood?

When wood is burned, the combustion reaction produces heat and emissions in the form of water, organic vapors, gases, and particulates. The emissions of most concern are carbon monoxide (CO), carbon dioxide (CO2), sulfur oxides (SOx), and nitrogen oxides (NOx).

How hot should you burn wood stove?

The majority of modern wood-burning stoves give a heat ranging from 375 degrees to 650 degrees Fahrenheit. There are thermometers designed to find out the stove temperature. The optimal temperature of a wood-burning stove will produce no unwanted residue such as carbon dioxide, creosote, or smoke.

What is the difference between primary air and secondary air?

Primary air provides a percentage of the combustion air, but more importantly, controls the amount of fuel that can be burned. Secondary air improves combustion efficiency by promoting the fuel to burn completely. Power burners generally do not require secondary air.

Why do we use secondary air?

Secondary-air systems have been successfully employed to reduce such cold starting emissions. To reduce the level of these pollutants, ambient air with a high oxygen content (“secondary-air”) is injected into the exhaust manifold directly downstream of the exhaust valves during the cold starting phase.

What is the function of secondary air in coal combustion?

The Secondary air provides the oxygen to complete the combustion in the “Burner Zone” to the extent the burner is designed. On a typical burner, there is more combustion air delivered to the burner by the Secondary air than the Primary air generally by a factor of 2, depending on burner design.

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