12288 kilowatt-hours/year multiplied by 0.8 = 9830.40 kg/year And if you have more than one person in your household, divide accordingly to get your personal share from the total: 4915.2 kg/year 3. If you use natural gas as an energy source, estimate the number of BTUs of natural gas you used last year. Multiply the number on your last monthly gas bill by 12 to get an estimate for the year. If you don’t have a gas bill, assume a typical value of 60,000,000 BTUs/year. 100,000 BTUs of natural gas produce 5.5 kg of CO 2 . 100,000 BTUs is approximately the yield of 100 cubic feet of gas. 100 cubic feet of gas = 1 ccf (also called 1 Therm). Using your natural gas bill or the typical value, determine how many kilograms of CO 2 are emitted per year: _ I do not use natural gas 4. If you use heating oil as an energy source, estimate the number of gallons of oil you used last year. If you don’t have an oil bill, assume a typical value of 600 gal/yr. One gallon of oil generates 7.6 kg CO 2 . I do not use Heating oil
RONALD MILLER (06912164) PROBLEM SET 6 (SC4730) 5. If your home is heated by coal or wood assume, 100 lb. of coal = 1,111,100 BTUs and 120 lb. of dry wood = 948,000 BTUs. One cord of wood emits 3068 kg of CO 2 . However, since wood is only a temporary store of CO 2 , some people argue that heating with wood does not make a contribution to atmospheric CO 2 . What is your opinion? While I do believe that burning wood emits CO2, it is considered carbon natural and gives off the same amount of CO2 rather it is burned or if it decays naturally.