Estimate the avoided yearly CO2 emissions from the following:

a. Switching from a single 60-watt incandescent bulb that burns for 6 hours per day to a 13-watt CFL.
b. Using pure biodiesel instead of motor gasoline for an automobile that travels 60,000 miles per year with a fuel economy of 28 mpg.
c. Replacing an air conditioner with an EER of 11 with a unit that has an EER of 14, if the cooling load is 22 million Btu per year.
d. Upgrading a natural gas furnace from one with 88% efficiency to one with 92% efficiency, if the heating load is 55 million Btu per year.

What will be an ideal response?




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