1. Carry out the eco-audit for CO2 for the portable space heater using the bill of materials from Section 8.8’s Table 8.8 of the text, assuming that at end of first life the fan and heat shield are...

1. Carry out the eco-audit for CO2 for the portable space heater using the bill of materials from Section 8.8’s Table 8.8 of the text, assuming that at end of first life the fan and heat shield are re-engineered to incorporate them into a new product. Use the transportation and duty cycle described there.

2. Carry out Exercise E8.3 (the toaster) using the CES eco-audit tool, using the bill of materials listed there. Make bar charts both for energy and for CO₂. Then select the grade “Standard” in the calculation, and repeat (“Standard” grade is material with a recycle content equal to the recycle fraction in current supply, data for which are included in the data sheets). Compare the result with using virgin material to make the toaster.