Question: what is the difference between gross and net heating value?
Answer: Gross calorific value (GCV) is the amount of heat released by the complete combustion of a unit of natural gas. ... Net Calorific Value (NCV) also known as lower heating value (LHV) or lower calorific value (LCV) is determined by the subtracting the heat of vaporization of the water vapour from the higher heating value.