Denmark's National Inventory Report 2005 - Submitted under the ...

4.6.2 Methodological issues
The data for emissions of HFCs, PFCs, and SF has been obtained in continuation on work on in-
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ventories for previous years. The determination includes the quantification and determination of
any import and export of HFCs, PFCs, and SF contained in products and substances in stock form.
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This is in accordance with the IPCC-guideline (IPCC (1996), vol. 3, p. 2.43ff) as well as the relevant
decision trees from the IPCC Good Practice Guidance (GPG, IPCC (1999) p. 3.53ff).
For the Danish inventories of F-gases basically a Tier 2 bottom up approach is used. As for verification
using import/export data a Tier 2 top down approach is applied. In an annex to the F-gas
inventory report 2003 (Danish Environmental Protection Agency, 2005), there is a specification of
the applied approach for each sub-source category.
The following sources of information have been used:
• Importers, agency enterprises, wholesalers, and suppliers
• Consuming enterprises, and trade and industry associations
• Recycling enterprises and chemical waste recycling plants
• Statistics Denmark
• Danish Refrigeration Installers’ Environmental Scheme (KMO)
• Previous evaluations of HFCs, PFCs, and SF 6
Suppliers and/or producers provide consumption data of F-gases. Emission factors are primarily
defaults from GPG, which are assessed to be applicable in a national context. In case of commercial
refrigerants and Mobile Air Condition (MAC), national emission factors are defined and used.
Import/export data for sub-source categories where import/export are relevant (MAC,
fridge/freezers for household) are quantified on estimates from import/export statistic of products
+ default values of the amount of gas in the product. The estimates are transparent and described
in the annex to the report referred to above.
The Tier 2 - bottom-up analysis used for determination of emissions from HFCs, PFCs, and SF 6
covers the following activities:
• Screening of the market for products in which F-gases are used
• Determination of averages for the content of F-gases per product unit
• Determination of emissions during the lifetime of products and disposal
• Identification of technological development trends that have significance for the emission of Fgases
• Calculation of import and export on the basis of defined key figures, and information from Statistics
Denmark on foreign trade and industry information
The determination of emissions of F-gases is based on a calculation of the actual emission. The actual
emission is the emission in the evaluation year, accounting for the time lapse between consumption
and emission. The actual emission includes Danish emissions from the production, from
products during their lifetimes, and from waste products.
Consumption and emissions of F-gases are whenever possible carried out for individual substances,
even though the consumption of certain HFCs has been very limited. This has been done
to ensure transparency of evaluation in the determination of GWP-values. However, the continued
use of a category for Other HFCs has been necessary since not all importers and suppliers have
specified records of sales for individual substances.
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