Division 2.2 Energy Efficiency Index (EEIWD) of the complete cycle of household washer-dryers

For the calculation of the EEI_WD of a household washer-dryer model, the weighted energy consumption of the wash and dry cycle at the rated capacity and half of the rated capacity is compared to its standard cycle energy consumption.

1. (a)

   The EEI_WD is calculated as follows, and is rounded to one decimal place:

   EEI_WD = (E_WD/SCE_WD) × 100

   where:

   E_WD is the weighted energy consumption of the complete cycle of the household washer-dryer;

   SCE_WD is the standard cycle energy consumption of the complete cycle of the household washer-dryer.

2. (b)

   The SCE_WD is calculated in kWh per cycle and rounded to three decimal places as follows:

   SCE_WD = -0,0502 × d² + 1,1742 × d - 0,644

   where d is the rated capacity of the household washer-dryer for the wash and dry cycle.

3. (c)

   For household washer-dryers with a rated washing capacity lower than or equal to 3 kg, the E_WD is the energy consumption at rated capacity and rounded to three decimal places.

   For other household washer-dryers, the E_WD is calculated in kWh per cycle as follows and rounded to three decimal places:

   

   where:

   E_WD,full is the energy consumption of the household washer-dryer for the wash and dry cycle at rated capacity and rounded to three decimal places;

   E_WD,½ is the energy consumption of the household washer-dryer for the wash and dry cycle at half the rated capacity and rounded to three decimal places.

4. (d)

   The weighted energy consumption per 100 cycles of the complete cycle of the washer-dryer is calculated as follows and rounded to the nearest integer:

   E_WD × 100