Tag: Related study phase: Inventory analysis (LCI)
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G-18 (Buildings) / G-16 (Products) Allocation
Aspect G-18 (Buildings) / G-16 (Products) Allocation Description Normally, LCA studies should focus only on a single product at a time. However, systems under assessment often produce more than one product. The same problem arises when different waste flows are treated collectively in the same process (e.g. incineration). In these situations, the allocation problem arises:…
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G-19 Allocation case: production of renewable energy on-site
Aspect G-19 Allocation case: production of renewable energy on-site Description The production of on-site renewable energy can occur at different time of the day, month and year, and may or may not meet on-site needs. Renewable energy may be consumed on site, or may be exported to the electricity grid or to a heating network,…
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G-20 (Buildings) / G-17 (Products) Allocation case: reuse, recycling and recovery
Aspect G-20 (Buildings) / G-17 (Products) Allocation case: reuse, recycling and recovery Description When the lifespan of a product ends, it can be reused, recycled, or used for recovery in another product system. These recovery operations entail a benefit for the system that yielded them. How to allocate these benefits to the system under study,…
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G-24 Collecting foreground and background data for product LCA
Aspect G-24 Collecting foreground and background data for product LCA Description Different data need to be collected for a product LCA study. The most important data collection is usually the production stage especially for highly complex manufacturing processes. The data can be based on industry or companies involved in the project else on secondary sources…
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5.3 Life cycle inventory analysis
5.3 Life cycle inventory analysis G-21 Background databases in LCA studies G-22 Data quality. G-23 Choice of LCI/LCIA datasets for screening LCA. G-24 Choice of LCI/LCIA datasets for simplified LCA. G-25 Choice of LCI/LCIA-datasets for complete LCA. G-26 Use of building physical description data.
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G-21 Background databases in LCA studies
Aspect G-21 Background databases in LCA studies Description According to the ILCD Handbook, the background system comprises those processes that are not under the direct control or decisive influence of the producer of the good. For attributional modelling these are typically processes for both the upstream and downstream parts of the entire life cycle of…
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G-22 (Buildings) / G-23 (Products) Data quality
Aspect G-22 (Buildings) / G-23 (Products) Data quality Description Generally speaking, the data quality in LCA refers to the relevance of generic or specific LCA data in accordance with the goal and scope of the study. Depending on the background data sources (literature, industry data), and the boundaries and context of the study (e.g. for…
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5.3 Life Cycle Inventory Analysis (LCI)
5.3 Life Cycle Inventory Analysis (LCI) G-21 Background databases in LCA studies G-22 Data selection for a product LCA. G-23 Data quality. G-24 “Collecting foreground and background data for product LCA”
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G-23 Choice of LCI/LCIA datasets for screening LCA
Aspect G-23 Choice of LCI/LCIA datasets for screening LCA Description Different LCI/LCA data are needed to assess the environmental impacts of buildings. They make it possible to quantify the different impacts related to the building products and equipment, the construction site, the operational energy and water uses, and the deconstruction of the building. Depending on…
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G-24 Choice of LCI/LCIA datasets for simplified LCA
Aspect G-24 Choice of LCI/LCIA datasets for simplified LCA Description Different LCI/LCIA data are needed to assess the environmental impacts of buildings. They make it possible to quantify the different impacts related to the building products and equipment, the construction site, the operational energy and water uses, and the deconstruction of the building. Depending on…