Föreläsning 5

Question 1

What is LCA?

Answer 1

Livscykelanalys (LCA) är en metod för att beräkna miljöpåverkan under en produkts hela livscykel – från att naturresurser utvinns till dess att produkten inte används längre och måste tas om hand. Med en LCA kan du ta reda på i vilket skede av en byggnads livscykel en viss miljöpåverkan är som störst. Resultatet kan du sedan använda för att projektera och bygga med mindre miljöpåverkan

Accounting of the environmental impact from a
product life cycle with a certain functional unit
and system boundary

LCA is a method for calculating the environmental
impacts of a product or service

Question 2

What is ISO14040?

Answer 2

ISO 14040 is a set of international standards providing principles and a framework for conducting life cycle assessments (LCAs), which evaluate the environmental impacts of products or processes from cradle to grave.

Question 3

What is the scope of LCA limited by?

Answer 3

LCA deals only with the environmental
impacts of a product (system), thus ignoring financial, political, social, and
other factors (eg, costs, regulatory matters, or Third World issues).

Question 4

What are the Essential characteristics of LCA?

Answer 4

Function – functional unit
Not what the product/service is but rather
what we want from it (i.e. function)
Life-cycle perspective – ”cradle to grave”
Not only what we see here and now but everything that has to happen in order to
provide us what we want

Answer 5

Life Cycle - Cradle to Grave:
ChatGPT:
Resource Extraction:

Examining the extraction of resources, such as minerals, metals, or fossil fuels, is a crucial starting point. The environmental impact associated with extracting these resources can include habitat disruption, soil erosion, and biodiversity loss.

Materials Production:

Assessing the production of materials involves understanding the energy, water, and raw material inputs required. Evaluates the environmental consequences of transforming raw materials into the materials used in manufacturing.
Production:

The production phase evaluates the environmental impact of manufacturing the final product, including energy consumption, emissions, and waste generation.

Use:

Examining the use phase involves evaluating how the product interacts with the environment during its intended use.

Waste Management:

Energy Flows - Emissions:

Question 6

What is the frame work/standarized method for LCA?

Answer 6

Goal & scope definition, inventory analysis, impact assesment,
Interpretation.