specific energy consumption (SEC) definition
specific energy consumption (SEC). (expressed in kWh/(m2.a)) means a numerical indicator to express the energy savings for mechanical ventilation per m² heated floor area of a dwelling or building compared to a fully naturally ventilated dwelling or residential buildings , calculated for RVUs in accordance with Annex VI;
specific energy consumption (SEC). (expressed in kWh/(m2.a)) means a coefficient to express the energy consumed for ventilation per m2 heated floor area of a dwelling or building, calculated for RVUs in accordance with Annex VIII;