What is the energy input of wood burning?

The energy input of wood burning is typically measured in British thermal units (BTUs). The BTU content of wood varies depending on the species of wood, the moisture content, and the combustion conditions. Generally, hardwoods have a higher BTU content than softwoods, and dry wood has a higher BTU content than wet wood. The BTU content of wood also increases as the combustion temperature increases.

The average BTU content of dry hardwood is about 20 million BTUs per cord, while the average BTU content of dry softwood is about 15 million BTUs per cord. This means that a cord of dry hardwood will produce about 33 percent more heat than a cord of dry softwood.

The BTU content of wood can also be affected by the combustion conditions. For example, a wood-burning stove that is operated at a higher temperature will produce more BTUs than a wood-burning stove that is operated at a lower temperature. Similarly, a wood-burning stove that is equipped with a catalytic combustor will produce more BTUs than a wood-burning stove that is not equipped with a catalytic combustor.

Here are some additional factors that can affect the energy input of wood burning:

* The size of the wood: Larger pieces of wood will produce more BTUs than smaller pieces of wood.

* The density of the wood: Denser woods will produce more BTUs than less dense woods.

* The moisture content of the wood: Dry wood will produce more BTUs than wet wood.

* The combustion conditions: A higher combustion temperature will produce more BTUs than a lower combustion temperature.

* The type of wood-burning appliance: A wood-burning stove that is equipped with a catalytic combustor will produce more BTUs than a wood-burning stove that is not equipped with a catalytic combustor.

By understanding the factors that affect the energy input of wood burning, you can ensure that you are getting the most out of your wood-burning appliance.