Commission Delegated Regulation (EU) No 665/2013Show full title

3. Annual energy consumption U.K.

The annual energy consumption AE is calculated, in kWh/year and rounded to one decimal place, as follows:

• for carpet vacuum cleaners:

  

• for hard floor vacuum cleaners:

  

• for general-purpose vacuum cleaners:

  

Where:

• ASE_c is the average specific energy consumption in Wh/m² during carpet test, calculated as provided below;

• ASE_hf is the average specific energy consumption in Wh/m² during hard floor test, calculated as provided below;

• dpu_c is the dust pick-up on carpet, determined in accordance with point 4 of this Annex;

• dpu_hf is the dust pick-up on hard floor, determined in accordance with point 4 of this Annex;

• 50 is the standard number of cleaning tasks per year;

• 87 is the standard dwelling surface to be cleaned in m²;

• 4 is the standard number of times that a vacuum cleaner passes over each point on the floor (two double strokes);

• 0,001 is the conversion factor from Wh to kWh;

• 1 is the standard dust pick-up;

• 0,20 is the standard difference between dust pick-up after five and after two double strokes.

Average specific energy consumption (ASE) U.K.

The average specific energy consumption during carpet test (ASE_c ) and during hard floor test (ASE_hf ) shall be determined as an average of the specific energy consumption (SE) of the number of cleaning cycles that constitute the carpet and hard floor test respectively. The general equation for the specific energy consumption SE in Wh/m² test area, at an accuracy of 3 decimal places, applicable for carpet, hard floor and general purpose vacuum cleaners with the appropriate suffixes, is:

Where:

• P is the average power in W, at an accuracy of 2 decimal places, during the time in a cleaning cycle that the center of the cleaning head is moving over the test area;

• NP is the average power equivalent in W, at an accuracy of 2 decimal places, of battery operated active nozzle, if any, of the vacuum cleaner, calculated as provided below;

• t is the total time in hours, at an accuracy of 4 decimal places, in a cleaning cycle during which the centre of the cleaning head, i.e. a point halfway between the side, front and back edges of the cleaning head, is moving over the test area;

• A is the surface area in m², at an accuracy of 3 decimal places, passed over by the cleaning head in a cleaning cycle, calculated as 10 times the product of the head width and the appropriate length of test area. If a household vacuum cleaner has a head width of over 0,320 m, then the figure of 0,320 m shall be substituted for head width in this calculation.

For the hard floor tests the suffix hf and parameter names SE_hf, P_hf, NP_hf, t_hf and A_hf shall be used in the above equation. For the carpet tests the suffix c and parameter names SE_c, P_c, NP_c, t_c and A_c shall be used in the above equation. For each of the cleaning cycles, values of SE_hf, P_hf, NP_hf, t_hf , A_hf and/or SE_c, P_c, NP_c, t_c , A_c , as applicable, shall be included in the technical documentation.

Power equivalent of battery operated active nozzles (NP) U.K.

The general equation for the average power equivalent of battery operated active nozzles NP in W, applicable for carpet, hard floor and general purpose vacuum cleaners with the appropriate suffixes, is:

Where:

• E is the electricity consumption in Wh at an accuracy of 3 decimal places of the battery operated active nozzle of the vacuum cleaner necessary to return the initially fully charged battery to its originally fully charged state after a cleaning cycle;

• tbat is the total time in hours, at an accuracy of 4 decimal places, in a cleaning cycle in which the battery operated active nozzle of the vacuum cleaner is activated, in accordance with manufacturer’s instructions;

In case the vacuum cleaner is not equipped with a battery operated active nozzle the value of NP equals zero.

For the hard floor tests the suffix hf and parameter names NP_hf, E_hf, tbat_hf shall be used in the above equation. For the carpet tests the suffix c and parameter names NP_c, E_c, tbat_c shall be used in the above equation. For each of the cleaning cycles, values of E_hf, tbat_hf and/or E_c, tbat_c , as applicable, shall be included in the technical documentation.