The Power Company has recommended a plant conversation to switch to using natura

ID: 907118 • Letter: T

Question

The Power Company has recommended a plant conversation to switch to using natural gas as fuel to generate the same amount of energy. Your firm has been asked to review the economics and perform and sensitivity analysis for the proposed switch and make a recommendation to the regional Utility Board of Directions. If the natural gas to be used has an energy capacity of 43 MJ/m3 (mega joules per cubic meter of gas)

a) Estimate the volume of natural gas needed in m3/yr.

b) Calculate the annual emissions of criteria pollutants including SO2, NOx, PM and greenhouse gases including CO2 and CO using the appropriate emissions factors given in the below table.

Pollutant

Anthracite coal

Bituminous coal

Fuel oil

Natural Gas

CO2 (g/GJ)

94,600

101,000

77,400

56,100

SO2 (g/GJ)

765

1361

1350

0.68

NOx (g/GJ)

292

183

195

93.3

CO (g/GJ)

89.1

15.7

14.5

Particulate matter (g/GJ)

1,203

3254

0.1