Key Functions and Features of LCA Software

Core Functions of LCA Software

What are the main functions of software used to carry out a Life Cycle Assessment (LCA)? It provides data on environmental aspects from databases, calculates environmental impacts using integrated methods, and reports results through charts and text.

Understanding LCA Databases

What are the databases generally included in LCA software? These databases contain numerous Life Cycle Inventory (LCI) datasets covering areas such as:

• Agriculture
• Energy supply
• Transport
• Biofuels and biomaterials
• Waste treatment

These datasets are essential for building Life Cycle Inventories. They track inputs from the Ecosphere and Technosphere into the system, as well as outputs from the system back to the Ecosphere and Technosphere. The items or datasets are the outcomes of case studies or market surveys where all environmental aspects of the selected life cycle stages have been gathered and aggregated following an LCI procedure. Their structure and format allow the data to be processed efficiently by LCA software.

Environmental Impact Assessment Methods

What are the environmental impact methods included in LCA software? These are software algorithms designed to calculate environmental impacts based on specific environmental aspects. These methods can assess the first two steps of environmental impact assessment—Identification and Characterization—or all four steps, including Normalization and Valorization/Weighting. Their structure and format ensure that results are compatible with LCA software processing.

Comparing Different Impact Assessment Methods

If two different environmental impact assessment methods are applied to the same inventory, can the results differ? Yes, because each environmental impact assessment method applies slightly different identification and characterization rules. Furthermore, they may differ significantly in normalization and valorization. Additionally, different methods may include distinct environmental impact categories.

Impact of Database Selection on Results

If the same environmental impact assessment method is applied to the same item (e.g., 1-ton payload transported 1 km in a 28-ton truck) extracted from two different databases, can the results differ? Yes, because each database is constructed using different information sources, rules, and algorithms to allocate environmental aspects to functional units and process units.