Efficiencies, woodstove

The low organic emissions from steady state combustion at power plants should not be extrapolated to small scale units such as woodstoves where the necessary conditions for efficient combustion are rarely achieved. 

Long and Weaver (1985). The efficiency does not include a correction for moisture content. When adjustments are made for moisture, the efficiency of the average airtight woodstove or fireplace for wood fuel with 20% moisture, for example, would be 50% rather than 63%, or 10% rather than 13%. 

---