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CHEN 58001 Green Engineering Homework Assignment 3 Due Wednesday, 11/16 1. Consider the following examples of goal statements for three different hypothetical LCA studies. Propose revisions if needed for each the hypothetical goal statement to meet ISO requirements. • "The goal of this study is to find the energy use of making ice cream." • "The goal of this study is to produce an LCA for internal purposes." • "This study seeks to do a life cycle assessment of a computer to be used for future design efforts." 2. Draw a product system diagram (process flow diagram) for a paper clip, labeling inputs, outputs, intermediate flows, etc. 3. Consider the examples of study design parameters (SDPs) for four hypothetical LCA studies in the table below. Fill in the rest of the entries to complete the table. Also, correct any existing entries that appear wrong. Be sure that the SDPs bridge the various elements of the study using appropriate values and units. Product System Function Functional Unit LCI Results Printed book Collect 100 pages of printed text Portable flash Storing electronic energy per gigabyte drive content

          CHEN 58001 Green Engineering
Homework Assignment 3
Due Wednesday, 11/16
1. Consider the following examples of goal statements for three different hypothetical LCA
studies. Propose revisions if needed for each the hypothetical goal statement to meet ISO
requirements.
• "The goal of this study is to find the energy use of making ice cream."
• "The goal of this study is to produce an LCA for internal purposes."
• "This study seeks to do a life cycle assessment of a computer to be used for future design
efforts."
2. Draw a product system diagram (process flow diagram) for a paper clip, labeling inputs,
outputs, intermediate flows, etc.
3. Consider the examples of study design parameters (SDPs) for four hypothetical LCA
studies in the table below. Fill in the rest of the entries to complete the table. Also, correct
any existing entries that appear wrong. Be sure that the SDPs bridge the various elements
of the study using appropriate values and units.
Product
System
Function
Functional Unit
LCI Results
Printed book
Collect 100 pages of
printed text
Portable flash
Storing electronic
energy per gigabyte
drive
content

CHEN 58001 Green Engineering
Homework Assignment 3
Due Wednesday, 11/16
1. Consider the following examples of goal statements for three different hypothetical LCA
studies. Propose revisions if needed for each the hypothetical goal statement to meet ISO
requirements.
• "The goal of this study is to find the energy use of making ice cream."
• "The goal of this study is to produce an LCA for internal purposes."
• "This study seeks to do a life cycle assessment of a computer to be used for future design
efforts."
2. Draw a product system diagram (process flow diagram) for a paper clip, labeling inputs,
outputs, intermediate flows, etc.
3. Consider the examples of study design parameters (SDPs) for four hypothetical LCA
studies in the table below. Fill in the rest of the entries to complete the table. Also, correct
any existing entries that appear wrong. Be sure that the SDPs bridge the various elements
of the study using appropriate values and units.
Product
System
Function
Functional Unit
LCI Results
Printed book
Collect 100 pages of
printed text
Portable flash
Storing electronic
energy per gigabyte
drive
content

Added by Kari S.

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