HEAT OF COMBUSTION NET AND GROSS HEAT OF COMBUSTION OF BURNER AND DIESEL FUELS: ASTM D4868
Similar to the three test methods for aviation fuels, this is also an empirical test based on the correlation between heat of combustion and density, sulfur, water, and ash content of the fuel sample. The test is useful for use with burner and diesel fuels for which it is not usually critical to obtain very precise heat determinations. This test method is not applicable to pure hydrocarbons, nor is it intended as a substitute for experimental measurement of heat of combustion. This test method has a repeatability of 0.05 MJ/kg and a reproducibility of 0.15 MJ/kg.

No bias statement is made.