ANNEX IIISupplementary provisions
ANNEX III Method for calculating the energy efficiency index for professional refrigerated storage cabinets For the calculation of the energy efficiency index (EEI) of a professional refrigerated storage cabinet model, the annual energy consumption of the cabinet is compared to its standard annual energy consumption. The EEI is calculated as: EEI = (AEC/SAEC) × 100 Where: AEC = E24h × af × 365 AEC = annual energy consumption of the cabinet in kWh/year E24h = energy consumption of the cabinet over 24 hours af = adjustment factor to be applied only for light-duty cabinets, according to Annex IV, point 2(b) SAEC = M × Vn + N SAEC = standard annual energy consumption of the cabinet in kWh/year Vn = net volume of the appliance, which is the sum of net volumes of all compartments of the cabinet, expressed in litres. M and N are given in the Table 2. Table 2 M and N coefficient values Category Value for M Value for N Vertical Chilled 1,643 609 Vertical Frozen 4,928 1 472 Counter Chilled 2,555 1 790 Counter Frozen 5,840 2 380