Which fuel is described as having lots of moisture and producing a lot of smoke when burned?

Which fuel is described as having lots of moisture and producing a lot of smoke when burned?

• A. Peat
• B. Coal
• C. Oil
• D. Natural Gas

Answer: (A)

Moisture content in fuels and how it affects combustion is what this question taps into. When a fuel has a lot of water, a big portion of the heat from burning goes into evaporating that water rather than raising the flame temperature. That cooling effect slows the burn and makes combustion less complete, which leads to more smoke and particulates. Peat tends to have high moisture, especially when not dried, so it burns with a lot of smoke. In contrast, coal, oil, and natural gas are drier or burn more cleanly, so they produce less smoke under typical conditions.

Moisture content in fuels and how it affects combustion is what this question taps into. When a fuel has a lot of water, a big portion of the heat from burning goes into evaporating that water rather than raising the flame temperature. That cooling effect slows the burn and makes combustion less complete, which leads to more smoke and particulates.

Peat tends to have high moisture, especially when not dried, so it burns with a lot of smoke. In contrast, coal, oil, and natural gas are drier or burn more cleanly, so they produce less smoke under typical conditions.