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Lower Calorific Value (= Net Calorific Value - NCV = Lower Heating Value - LHV) - the products of combustion contains the water vapor and the heat in the water vapor is not recovered; The table below gives the gross and net heating value of fossil fuels as well as some alternative biobased fuels.
The lower heating value (LHV), also known as the net calorific value (NCV), is defined as the amount of heat released by fully combusting a specified quantity less the heat of vaporization of the water in the combustion product.
You can use this calculator to obtain the heating value of a given mass or volume of hydrogen or other fuels, or to calculate the mass or volume given a certain heating value. Choose whether you want to convert to heating value or to mass/volume, and then choose the fuel type.
Download scientific diagram | Higher heating value (HHV) and lower heating value (LHV) and HHV/LHV conversion factor for all fuels used in the LUT model. from publication: Impacts of...
The first, called high heating value or HHV, includes the heat that can be obtained by condensing the water vapor that is released during combustion. The second, called low heating value or LHV, does not include this heat. The difference between HHV and LHV is typically about 10% for natural gas.
HHV = water vapour is condensed = more heat is recovered. LHV = water vapour remains as vapour – less heat is recovered. The reason for the distinction is that water vapour in combustion products is not often condensed in practice.
Download scientific diagram | Chemical composition, lower heating value (LHV), and methane number (MN) of natural gas types evaluated in this study.
