3. Efficiency of condensing boilers
3.1 High yields
The condensing boiler uses not only the lower calorific value (LHV) of a fuel, but also its higher calorific value (HCV).
For efficiency calculations, French and European standards use ICP as the reference.
The net calorific value (NCV) indicates the amount of heat that can be produced with a given quantity of fuel (solid, liquid or gaseous). With this reference value, combustion products are available in gaseous form. The gross calorific value (GCV) includes, in relation to the net calorific value (NCV), a percentage of additional energy in the form of heat by condensation of water vapor, known as "latent heat".
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Efficiency of condensing boilers
Oil-fired and condensing boilers
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