Compute the heat released by a fuel from its mass and lower heating value, and compare fuels by their energy content.
Q = m × H。
| Item | Formula / Rule | Source / Standard |
|---|---|---|
| Heat quantity formula | Heat quantity equals mass times the lower heating value, expressed in megajoules. | ISO 1928:2009, determination of calorific value of solid mineral fuels |
| Gross and net calorific value | The gross calorific value includes the latent heat of condensing water vapour, while the net value excludes it. | ISO 1928:2009, calorific value determination |
| Standard coal conversion | Energy carriers are converted to standard coal equivalent by calorific value for unified accounting. | GB/T 2589-2020, comprehensive energy consumption calculation |