Assignment 2 -- liaoc4

Assignment 2 -- liaoc4 - 1P04 Assignment 2 Cheng-Kai Liao...

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Unformatted text preview: 1P04 Assignment 2 Cheng-Kai Liao 0943980 Compare the life-circle effect of a paper cup and a Styrofoam cup: Assumptions: 1. The sizes of the cups are about 10 Oz in weight. 2. The cups are made from the same place and transferred to the same locations. 3. All the cups are surveyed by the same group of people. Product Matrix: Paper cups/ Styrofoam cups Environmental Stressor Material Use Energy Use Solid Residues Liquid Residues Gaseous Residues Total Pre- Manufacture 2/2 2/3 3/0 3/2 4/2 14/9 Product manufacture 2/3 1/3 3/3 4/3 2/1 12/13 Product delivery 3/3 4/4 3/3 4/4 4/4 18/18 Product Use 4/2 4/4 4/4 4/4 4/4 20/18 Life Stage Refurbishment, Recycling, disposal 4/3 2/1 4/1 4/4 4/4 18/13 Total 15/13 13/15 17/11 19/17 18/15 82/71 Conclusion: Paper cups have the higher score than Styrofoam cups do. Which means paper cups impact the environment less than Styrofoam cups do. Element designation Element value and explanation 1. Pre-manufacture Rating Paper cups Materials choice (1,1) 2 (No scarce material is used. But It uses virgin materials from nature such as wood and water. ) Energy use (1,2) 2 (It requires a lot of energy to foam the paper and the cups since the materials are raw.) Solid residue (1,3) 3(some solid residue but not toxic are left. ) 3(some solid residue but not toxic are left....
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Assignment 2 -- liaoc4 - 1P04 Assignment 2 Cheng-Kai Liao...

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