Greenhouse gas conversion factors for company reporting

2012 Guidelines to Defra / DECC's GHG Conversion Factors for Company Reporting
Annex 8 - Direct GHG Emissions from Use of Refrigeration, Air Conditioning Equipment and Heat Pumps
Last updated: Apr-12
B. Simplified Material Balance Method
This is a simplified material balance method. This will enable more accurate estimation of refrigerant leakage than the Screening Method (Table 8a - d).
To complete Table 8e, you will need to:
1) Calculate installation emissions.
This step is only necessary if your organisation installed any new equipment during the reporting period that was not pre-charged by the equipment supplier. Emissions are calculated by taking the
difference between the amount of refrigerant used to charge the equipment and the total capacity of the equipment. The difference is assumed to be released into the environment.
Table 8e
Sources
2) Determine equipment servicing emissions
Equipment servicing emissions result from the refrigerant that is used to service operating equipment. It is assumed that the servicing refrigerant is replacing the same amount that was lost to the
environment.
3) Calculate disposal emissions
This step is only necessary if your organisation disposed of equipment during the reporting period. Emissions are calculated by taking the difference between the total capacity of the equipment disposed
and the amount of refrigerant recovered. The difference is assumed to be released to the environment.
4) Calculate emissions
Emissions are calculated by summing the results of the first three steps.
This approach should be used for each type of refrigerant and blend.
This method requires the following information:
a) Refrigerant used to fill new equipment (set to 0 if the equipment has been pre-charged by the manufacturer);
b) Refrigerant used to fill equipment retrofitted to use this refrigerant (set to 0 if the equipment has been pre-charged by the manufacturer);
c) Total full capacity of new equipment using this refrigerant (set to 0 if the equipment has been pre-charged by the manufacturer);
d) Total full capacity of equipment that is retrofitted to use this refrigerant (set to 0 if the equipment has been pre-charged by the manufacturer);
e) Refrigerant used to service equipment;
f) Total full capacity of retiring equipment;
g) Total full capacity of equipment that is retrofitted away from this refrigerant to a different refrigerant;
h) Refrigerant recovered from retiring equipment;
i) Refrigerant recovered from equipment that is retrofitted away from this refrigerant to a different refrigerant.
Estimating Refrigerant Emissions with Simplified Material Balance Method
Total full capacity
of the new
equipment (kg) +
Quantity of
refrigerant used
to service
equipment (kg) +
Total full
capacity of
retiring
equipment (kg) -
Refrigerant recovered from retiring equipment
Refrigerant type
(select from list
from Annex 5)
Global
Warming
Potential
(GWP) =
Scope 1
Total kg CO 2
equivalent
Purchases of refrigerant used to charge new equipment (kg) -
(kg)
x
Refrigerant 1 - + + - x =
Refrigerant 2 - + + - x =
Refrigerant 3 - + + - x =
Refrigerant 4 - + + - x =
Refrigerant 5 - + + - x =
Refrigerant 6 - + + - x =
Refrigerant 7 - + + - x =
Refrigerant 8 - + + - x =
Refrigerant 9 - + + - x =
Refrigerant 10 - + + - x =
Total 0
2006 IPCC Guidelines for National Greenhouse Inventories (http://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/3_Volume3/V3_7_Ch7_ODS_Substitutes.pdf)
US EPA Climate Leaders Greenhouse Gas Inventory Protocol Core Module Guidance - Direct HFC and PFC Emissions from use of Refrigeration and Air Conditioning Equipment
(see: http://www.epa.gov/stateply/documents/resources/mfgrfg.pdf)
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