Paragraph 2 Energy efficiency index

(1)

For the calculation of the EEI_W, the weighted energy consumption of the eco 40-60 programme at—

(a)

the rated washing capacity;

(b)

half of the rated washing capacity; and

(c)

one quarter of the rated washing capacity;

must be compared to its standard cycle energy consumption.

(2)

The EEI_W must be rounded to one decimal place and calculated as follows—

EEI_W = (E_W/SCE_W) × 100.

(3)

For the purposes of sub-paragraph (2)—

(a)

E_W is the weighted energy consumption of the household washing machine or of the washing cycle of the household washer-dryer;

(b)

SCE_W is the standard cycle energy consumption of the household washing machine or the washing cycle of the household washer-dryer.

(4)

The SCE_W must be rounded to three decimal places and calculated in kWh per cycle as follows—

SCE_W = -0.0025 × c² + 0.0846 × c + 0.3920.

(5)

For the purposes of sub-paragraph (4), c is—

(a)

the rated capacity of the washing machine; or

(b)

the rated washing capacity of the washer-dryer;

for the eco 40-60 programme.

(6)

The E_W must be rounded to three decimal places and calculated in kWh per cycle as follows—

E w = A \times E w, f u l l \pm B \times E w, \frac{1}{2} \pm C \times E w \frac{1}{4}

(7)

For the purposes of sub-paragraph (6)—

(a)

E_W,full is the energy consumption of—

(i)

the washing machine; or

(ii)

the washing cycle of the household washer-dryer;

for the eco 40-60 programme at the rated washing capacity, rounded to three decimal places;

(b)

E_W,½ is the energy consumption of—

(i)

household washing machine; or

(ii)

the washing cycle of the household washer-dryer;

for the eco 40-60 programme at half of the rated washing capacity, rounded to three decimal places;

(c)

E_W,1/4 is the energy consumption of—

(i)

the washing machine; or

(ii)

the washing cycle of the household washer-dryer;

for the eco 40-60 programme at a quarter of the rated washing capacity, rounded to three decimal places;

(d)

A is the weighting factor for the rated washing capacity and rounded to three decimal places;

(e)

B is the weighting factor for half of the rated washing capacity and rounded to three decimal places;

(f)

C is the weighting factor for a quarter of the rated washing capacity and rounded to three decimal places;

(g)

for washing machines with a rated capacity lower than or equal to 3 kg and washer-dryers with a rated washing capacity lower than or equal to 3 kg—

(i)

A is equal to 1;

(ii)

B and C are be equal to 0;

(h)

for other washing machines and washer-dryers, the values of the weighting factors depend on the rated capacity according to the following equations—

(i)

A = -0.0391 × c + 0.6918;

(ii)

B = -0.0109 × c + 0.3582;

(iii)

C = 1 - (A + B);

where c is the rated capacity of the washing machine or the rated washing capacity of the washer dryer.