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Steven Zhang, an American Fulbright Scholar doing research in China at Zhejiang University, kindly gave a us a presentation about quantifying the environmental impacts of modern, manufactured consumer products by analysing their entire life cycles. Date: 22 Oct 2012 Venue: Vineyard Cafe (YuGu Road - 50m north of the XiXi Road intersection - Hangzhou City, China) Hangzhou Green Drinks
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Good intentions, bad results
The importance of quantifying environmental impact
Steven ZhangHangzhou Green Drinks
October 22, 2012
About me
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The Problem
3
Product life cycle
4
Raw material extraction
Manufacture
Use
Disposal
Product life cycle
Life cycle inventory
5
Raw material extraction
Manufacture
Use
Disposal
Product life cycleInputs Outputs
Atmospheric emissions
Waterborne waste
Solid waste
Other releases
Energy
Raw materials
Life cycle impact assessment
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Raw material
extraction
Manufacture
Use
Disposal
Product life cycle
Inputs Outputs
Atmospheric emissions
Waterborne waste
Solid waste
Other releases
Energy
Raw materials
Global Warming
Ozone depletion
Eutrophication
Carcinogenics
… … … …
Acidification
Impact categories
Life Cycle Inventory Life Cycle Impact Assessment
Life cycle analysis: the whole process
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Raw material
extraction
Manufacture
Use
Disposal
Product life cycle
Inputs Outputs
Atmospheric emissions
Waterborne waste
Solid waste
Other releases
Energy
Raw materials
Global Warming
Ozone depletion
Human toxicity
Carcinogenics
… … … …
Acidification
Impact categories
Life Cycle Impact AssessmentLife Cycle Inventory
Acidification
Ozone depletion
Human toxicity
Global Warming
Carcinogens
1.1pts
1.0pts
3.2pts
3.0pts
0.7pts
Total: 9.0ptsNormalized
impact scores
More on product life cycle
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System boundaries
9
UseManufacture and
Materials
Transport Disposal
Kindle 3
System boundaries
10
UseManufacture and
MaterialsTransport Disposal
10% recycled
90% landfillChargingChina to Boston
Product
Packaging
Charger
Wi-Fi/3G network
Amazon.com serversTransportation for
recycling
Inside system
boundary
Outside system
boundary
Kindle 3
Kindle 3 impact
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Battery .05
Materials/Manufactur
e: 3.95 ReciPepoins
Use
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LCA as part of the redesign process
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1. Understand users and needs
3. Ideate with sustainability in mind
4. Quantify impact of new design
2. Quantify environmental impact of current product
China
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Circular economy 循环经济
15Image source:chinacir.com.cn
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How to contact me
linkedin.com/in/stevenqzhang
QQ: 2380733807
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