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life_cycle_assessment [2026/06/16 10:29] – antoinelife_cycle_assessment [2026/06/16 10:45] (current) – [Definition] antoine
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-**Life Cycle Assessment (LCA)** is a method that assesses the environmental impacts of products or systems. It is the recommended method for environmental display at the European level and standardized at the international level. This method is largely used because of its 3 main characteristics : +**Life Cycle Assessment (LCA)** is a method that assesses the environmental impacts of products or systems. It is the recommended method for environmental display at the European level and standardized at the international level. This method is largely used because of its 3 main characteristics: 
-  - **Functional:** The object of study is defined by the function it fulfills. This allows a comparison between different solutions in order to choose the best one+  - **Functional:** The object of study is defined by the function it fulfills. This allows a comparison between different solutions in order to choose the best one.
   - **Multi-criteria:** Several environmental indicators are taken into account during the study. They include global warming potential, contribution to the depletion of abiotic and fossil resources, or the contribution of ionizing radiation. These indicators are among the main contributors to the impacts of digital technology.   - **Multi-criteria:** Several environmental indicators are taken into account during the study. They include global warming potential, contribution to the depletion of abiotic and fossil resources, or the contribution of ionizing radiation. These indicators are among the main contributors to the impacts of digital technology.
-  - **Life-cycle approach:** The impacts generated during all life cycle stages of the studied object are considered :  \\+  - **Life-cycle approach:** The impacts generated during all life cycle stages of the studied object are considered:  \\
      * __Extraction of raw materials:__ A lot of energy, chemicals and water are needed to extract materials from the earth and refine them. Furthermore, the concerned resources are limited and are getting rarer, thus it will be more and more difficult to extract them.      * __Extraction of raw materials:__ A lot of energy, chemicals and water are needed to extract materials from the earth and refine them. Furthermore, the concerned resources are limited and are getting rarer, thus it will be more and more difficult to extract them.
      * __Manufacturing:__ During manufacturing, the raw materials are transformed into digital components and equipment. This consumes a lot of water and energy.      * __Manufacturing:__ During manufacturing, the raw materials are transformed into digital components and equipment. This consumes a lot of water and energy.
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-===== Parametric Life Cycle Analysis =====+===== Parametric Life Cycle Assessment =====
  
 **Parametric LCA** extends traditional Life Cycle Assessment by replacing fixed input flows with adjustable parameters.  **Parametric LCA** extends traditional Life Cycle Assessment by replacing fixed input flows with adjustable parameters. 
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 <figure center |naknow_model> <figure center |naknow_model>
-{{ ::naknow_model_anonymous.png?direct&800 |}}+{{ :naknow_model_anonymous_clean.png?direct&700 |}}
 <caption> naKnow parametric model </caption> <caption> naKnow parametric model </caption>
 </figure> </figure>
  
 ===== Bibliography ===== ===== Bibliography =====