upper calorific value; upper heating value; gross calorific value(теплотворная способность топлива с учётом тепла, идущего на испарение содержащейся в топливе жидкости); higher heating value(The quantity known as higher heating value (HHV) (or gross energy or upper heating value or gross calorific value (GCV) or higher calorific value (HCV)) is determined by bringing all the products of combustion back to the original pre-combustion temperature, and in particular condensing any vapor produced. Such measurements often use a standard temperature of 15 °C (59 °F) wikipedia.org)
