Burner Combustion Chamber Heat Release Density Calculator

Burner Combustion Chamber Heat Release Density Calculator

Two burners with the same heat output can be very different designs if one packs that output into a much smaller chamber - heat release density is the metric that captures this.

The Formula

q′′′ = Q / V

Worked Example

500 kW of heat input in a 0.8 m³ chamber: q′′′ = 500 / 0.8 = 625 kW/m³.

Reference Range

Typical firetube and watertube boiler furnaces are often designed in a range of roughly 200-1,200 kW/m³ depending on fuel type and chamber design - higher values pack more punch into less refractory and steel but demand more careful cooling and materials selection.

How to Use This Calculator

1. Enter the burner's heat input in kW.
2. Enter the combustion chamber's internal volume in m³.