This calculator computes diesel soot density from smoke opacity. The algorithm is explained in the Smoke Opacity paper, Eq.(3) - Eq.(8). A discussion on the applicability and limitations of this calculation is included in the paper.

Input Data

Enter the required input data and press the “Calculate” button to do the calculation. An asterisk will appear if your data is out of range.

Smoke opacity %
Light path length cm
Temperature °C

Light extinction coefficient (K) 1/cm
Soot Density mg/m3
Soot Density @STP mg/Nm3
Mass fraction of soot mg/kg