When it comes to heating with a wood burning stove, some users consider the option of burning coal. While wood is the traditional and more common choice, coal can be a viable alternative if used correctly. In this article, we’ll provide you with precise technical details and guidelines for using coal in a wood burning stove safely and effectively.
Why Consider Coal?
Coal has been a primary heating fuel for centuries and continues to be a reliable source of warmth. It offers several advantages when used in a wood burning stove:
Higher Energy Density: Coal contains more energy per unit of weight compared to wood, which means it can produce more heat for a longer duration.
Consistent Heat Output: Coal burns steadily and consistently, making it easier to maintain a stable temperature in your living space.
Longer Burn Times: When compared to wood, coal tends to burn for a longer period, reducing the frequency of refueling.
Technical Details
Coal Types
There are different types of coal, and it’s important to understand their variations:
Anthracite Coal: This is the highest quality and cleanest-burning coal. It produces very little smoke, minimal ash, and a steady, long-lasting heat. It’s an excellent choice for wood stoves.
Bituminous Coal: Bituminous coal is more readily available but produces more smoke and ash compared to anthracite. It’s still a viable option for heating.
Grate Design
To burn coal effectively, your wood burning stove should have a suitable grate design. Most wood stoves come with a grate that works for both wood and coal. However, stoves designed exclusively for wood may not have a grate suitable for coal combustion.
Airflow Control
Proper airflow is crucial when burning coal. Coal requires a different air-to-fuel ratio than wood. Adjust the air vents or dampers according to the coal’s specific requirements, allowing for efficient combustion.
Best Practices for Burning Coal
Start with Wood: When transitioning from wood to coal, it’s common practice to start with a layer of wood and then add a layer of coal on top. This method ensures a more controlled and consistent burn.
Small, Frequent Reloads: Instead of loading your stove with a large quantity of coal, it’s better to add smaller amounts more frequently. This approach helps maintain a steady burn and prevents the stove from overheating.
Regular Ash Removal: Unlike wood, coal produces a substantial amount of ash. Regularly remove the ash to maintain proper airflow and combustion efficiency.
Safety Measures: Always follow safety guidelines when using coal. It’s important to have a functioning carbon monoxide detector and ensure your stove is well-ventilated.
Environmental Considerations
Using coal in a wood stove can generate more emissions than wood, so it’s essential to be mindful of the environmental impact. If you’re concerned about emissions, consider using anthracite coal, which is the cleanest-burning option.
In conclusion, using coal in a wood burning stove can be a practical choice, provided you understand the technical details and follow best practices. When used correctly, coal can offer a long-lasting and efficient heat source for your home. However, it’s crucial to pay attention to safety and environmental considerations, ensuring a warm and responsible heating experience.