Location: Europe without Switzerland - Europe without Switzerland
Activity represents combustion of wood pellets in new (=installed in 2014) small wood pellet furnaces in Switzerland and can be considered as being representative for Europe. Uncertainty factors were adjusted accordingly. The inventory shall be considered valid for boilers with nominal capacities in the approximate range of 5 to 20 kW. The activity represents average annual operation including start/stop (warm up and cool down), which reduces the efficiency compared to rated values provided by boiler manufacturers and increases some emission factors such as CO. Air emission factors as well as other exchanges correspond to v2.2 except of PM, CO, NOx, CH4 and NMVOC. These key emission factors were updated based on latest available information.
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Undefined unit processes (UPRs) are the unlinked, multi-product activity datasets that form the basis for all of the system models available in the ecoinvent database. This is the way the datasets are obtained and entered into the database by the data providers. These activity datasets are useful for investigating the environmental impacts of a specific activity (gate-to-gate), without regard to its upstream or downstream impacts.