GaBi Paper Clip Tutorial - GaBi Software

More documents

Recommendations

Info

Practical constraints on data collection should be documented in the scope definition. Figure 7 shows a simple diagram that can be used to support data collection. It allows the user to enter the various quantified input and output flows. 2.2.3 Calculation of the LCI Figure 7: Example Data Collection Sheet Before calculating the life cycle inventory, the following three steps should be completed: Data Validation - Validating the collected data is a continuous process. This can be done with mass or energy balances as well as with a comparison to similar data. Also, methods have to be in place to handle data gaps. Relating Data to Unit Processes - The data has to be related to unit processes Relating Data to Functional Unit - The data has to be related to the functional unit. These steps are necessary to generate the LCI for each unit process and for the overall product system. The LCI of the whole product system is the sum of all LCIs of all involved processes. The LCI can be calculated using the <strong>GaBi</strong> software. In <strong>GaBi</strong>, the LCI of the whole system is generated automatically once a system of processes is set up. In addition, the LCIs for a huge variety of processes are already stored in the database and only have to be connected to model a system. This process of modeling is described in detail in Chapter 3 of this handbook. 2.3 Life Cycle Impact Assessment The Life Cycle Impact Assessment (LCIA) identifies and evaluates the amount and significance of the potential environmental impacts arising from the LCI. The inputs and 18
outputs are first assigned to impact categories and their potential impacts quantified according to characterization factors. Figure 8 shows the conversion from emissions to impact potentials via classification and characterization. Figure 8: Classification and Characterization The Life Cycle Impact Assessment involves several steps according to the ISO standard. These can be found in more detail in the ISO 14044 standard. Within the scope of a study certain elements are defined for the LCIA. Mandatory elements include the selection of relevant impact categories, classification and characterization. The optional elements of the study are normalization, grouping and weighting. 2.3.1 Impact Assessment Methods There are different methods that can be used to perform a Life Cycle Impact Assessment. These methods are continuously researched and developed by different scientific groups based on different methodologies. This handbook does not explain the development of the different methods, but it does describe them. In life cycle impact assessment methods, such as TRACI or CML, two main approaches are used to classify and characterize environmental impacts: the problem-oriented approach (mid point) and the damage-oriented approach (end point). 19
Page 1 and 2: GaBi Paper Clip Tutorial Handbook f
Page 3 and 4: Table of Contents 1 Introduction to
Page 5 and 6: Table of Figures Figure 1: Overview
Page 7 and 8: Purpose of this Handbook The purpos
Page 9 and 10: The following is just a brief list
Page 11 and 12: 2.1.2 Scope The intended applicatio
Page 13 and 14: Figure 3: Process Flow Diagram A sy
Page 15 and 16: Figure 5: Allocation Example Figure
Page 17: Figure 6: Data Collection and Calcu
Page 21 and 22: 2.3.2 Selection of Impact Categorie
Page 23 and 24: each other more easily, since it is
Page 25 and 26: procedures, etc. This element is es
Page 27 and 28: 3 Procedure This chapter outlines a
Page 29 and 30: 3.4 GaBi theory GaBi calculates the
Page 31 and 32: You will now see the flow dialog bo
Page 33 and 34: A new plan will open in a new windo
Page 35 and 36: 3.10 Creating a new process You now
Page 37 and 38: In contrast, an LCI Result contains
Page 39 and 40: 28. Enter the steel wire flow by cl
Page 41 and 42: You have to specify where you would
Page 43 and 44: We determined that our paperclip ha
Page 45 and 46: process in the process chain. A con
Page 47 and 48: 3.22 Adding processes You will noti
Page 49 and 50: 3.23 Adding transportation processe
Page 51 and 52: 3.26 Linking processes Let´s compl
Page 53 and 54: 66. Right click on the plan and sel
Page 55 and 56: We will now add this newly created
Page 57 and 58: 3.30 Creating a balance If you have
Page 59 and 60: Next to this you find the option
Page 61 and 62: 3.34 View option: Quantities The ta
Page 63 and 64: 3.36 Weak point analysis A very nic
Page 65 and 66: A diagram will be generated showing
Page 67 and 68: 4 Literature GABI 2003 GaBi 4: Soft
Page 69 and 70:
Appendix A Appendix A 3 Global Warm
Page 71 and 72:
Appendix A Appendix A 6 Photochemic
Page 73 and 74:
The surface of the model is divided
show all

GaBi Paper Clip Tutorial - GaBi Software

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?