APPENDIX II
Guidance for calculating the energy consumption in the production process
Energy consumption per flooring m2 is calculated as an annual arithmetic average of the last three years. Should the company not have these data, the competent bodies will assess the acceptance of equivalent data.
If the producer has an energy surplus that is sold as electricity, steam or heat, the sold quantity can be deducted from the fuel consumption. Only fuel that is actually consumed in the manufacture of the floor covering is to be included in the calculation.
Energy consumption is reported in kWh/m2, although calculations may also be made in MJ/m2 (1 kWh = 3,6 MJ).
The energy content of the fuels is calculated based on Table 5.2. If electrical energy is produced on-site, one of the following methods can be used for calculating fuel consumption:
Values of the energy consumption shall be calculated by means of the standard fuel values. The energy contents of various fuels are given in Table 5.2.
Table 5.2.
Standard fuel values (1)
|
Fuel |
MJ/kg |
Fuel |
MJ/kg |
|
Petrol |
44,0 |
Pellets (7 % W) |
16,8 |
|
Diesel |
|
Peat |
7,8-13,8 |
|
LPG |
45,2 |
Straw (15 % W) |
|
|
Eo1 oil |
42,3 |
Biogas |
|
|
Eo5 oil |
44,0 |
Wood chips (25 %W) |
13,8 |
|
Natural gas |
47,2 |
Waste Wood |
|
|
Power station coal |
28,5 |
GJ/ton is equivalent to MJ/kg |
|
|
(1)
The values are laid down in Annex IV to Directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012 on energy efficiency, amending Directives 2009/125/EC and 2010/30/EU and repealing Directives 2004/8/EC and 2006/32/EC (OJ L 315, 14.11.2012, p. 1). (% W) is the percentage by weight of water in the fuel and is given the letter f in the formula below. If nothing else is stated, f = 0 % W and the ash content is average. |
|||
The formula for calculating the energy content of woodchips depends on the water content. Energy is required to evaporate the water in the wood. This energy reduces the heat value of the woodchips. The energy content can be calculated as:
The factor 21,442 is the sum of water's heat of evaporation (2,442 MJ/kg) and the energy content of dry wood 19,0 MJ/kg. If the applicant has laboratory analyses of the heat value of a fuel, the competent bodies may consider using this heat value for calculating the energy content.