The life cycle network for manufacturing widgets is shown in Figure 10.12.  

Figure 10.12:

1. Write down the technology and intervention matrices for this network. 

2. Calculate the life cycle flows for producing one unit of the widget. 

3. Calculate the life cycle flows for producing 10 kWh of electricity along with one widget.

Transcribed Image Text:

15 L H₂O 7 kWh Electricity generation 2 kWh 3 kg CO₂ 0.8 kg CH₁ 4.1 kg PM 10 8.7 L H₂O Steel production 6 kWh 5 kg CO₂ 1.3 kg CH4 6.2 kg PM10 Plastics production 4 LH₂O 2 kg steel Figure 10.12 Life cycle network for widget example. 2.5 kg CO₂ 1.5 kg CH4 1.9 kg PM10 1.5 kg exp. plastic 0.5 L H₂O Widget manufacturing 1 widget 1.2 kg CO₂ 0.4 kg CH₂ 0.7 kg PM10