Susatinable production systems Flashcards
What is LCA?
- A method to asses the environmental load for something, e.g. product, service, where the impact of all life stages is considered.
- standardized by ISO
- Data intensive
- Dependent on data quality
What LCA is not.
- an universal tool that automatically gives you a correct product evaluation
- a method only for use of LCA experts
- a method which results you always can compare against an other separate study.
Goal and scope of LCA
- purpose of the study
- goal and objectives of the study
- define functional unit
- choose impact categories
- system boundaries.
Allocation facts sources (LCA)
- turnover for the product
- Time a product has used the machine, facility…
- Dedicated area for the product in the facility
- Shippning
- Produced parts
- Produced parts*size or weight
GWP
Global Warming Potential
Sums all greenhouse emissions and tries to convert them to CO2 equivalents
Only direkt effects, indirect effects are not inculded.
AP
Acidification potential
The potential acidification effect of a given process can be estimated by summarizing the acidification potentials for the actual substances. SO2 equivalents.
EP
Eutrophication potential
Stimulates primary production. phosphate equivalent.
Direct production processes (LCA)
- Bill of materials
- Use of machines
- Transport
Indirect production processes (LCA)
- Facility; Heating, cooling, lighting
- Support function
- Machines
- Auxiliary mediums
- transports
Cradle-to-grave
from nature to nature. the life cycle of a product.
- Raw material aquisition
- processes
- Transportation
- Manufacture
- Use
- Waste management
Area of influence for manufacturers (LCA)
- Material selection
- Recyclability
- m,anufacturing processes
Data quality (LCA)
garbage in = garbage out
pedigree matrix
grades 1-5 1 is best
- Reliability of source
- completeness
- temporal differences (time)
- geographical differences
- Further technological differences
what means sustainable development?
sustainable development is maintaining a delicate balance between the human need to improve lifestyles and feeling of well-being on one hand, and perserving natrual resources and ecosystems, on which we and future generations depend on the other hand.
