Question

You determined that your boilers cumulatively burned 50,000,000 cubic feet of natural gas and 100,000 gallons...

You determined that your boilers cumulatively burned 50,000,000 cubic feet of natural gas and 100,000 gallons of No. 2 fuel oil last year. You performed your own stack tests that showed that your boilers emit 0.4 lbs of PM-2.5 for every million cubic feet of natural gas burned and 1.6 lbs of PM-2.5 for every thousand gallons of No. 2 fuel oil burned. What were the total emissions of PM-2.5 last year from the boilers in tons per year? Show your work.

Homework Answers

Answer #1

Total burned natural gas in one year = 50 million cu.ft.

PM 2.5 emissions => (0.4 lbs / million cu.ft natural gas) x (50 million cu.ft.) = 20 lbs/year

Total burned no. 2 fuel in one year = 100,000 gallons.

PM 2.5 emissions => (1.6 lbs / 1000 gallons no. 2 fuel) x (100 x 1000 gallons no. 2 fuel) = 160 lbs/year

Total annual PM 2.5 emissions is:

20 + 160 = 180 lbs = 0.09 tons

Thus the total emissions of PM-2.5, last year, from the boilers = 0.09 tons/year

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