Page 347 - Decision Making Applications in Modern Power Systems

Heuristic methods for the evaluation of environmental impacts Chapter | 12 309

TABLE 12.2 Conversion factors.
Parameter Initial units Multiply by End units
PM mg/m 3 1 mg/m 3
Nitrogen dioxide (NO 2 ) mg/m 3 1 mg/m 3
Nitrogen monoxide (NO) mg/m 3 1 mg/m 3
Carbon dioxide (CO 2 ) % 18,000 mg/m 3
Carbon monoxide (CO) ppm 1.25 mg/m 3
Hydrocarbons (C x H y ) % 17,960 mg/m 3
PM, Particulate matter.

TABLE 12.3 Molecular weights.
Sustenance Molar weight (g/mol)
W 12
32
O 2
O 16
CO 2 44
CO 28
N 14
28
N 2
H 1
Methane (CH 4 ) 16
Hexane (C 6 H 14 ) 86

emissions. Table 12.2 shows the emission values as the thermal plant and the
conversion factors.
To perform conversions, molecular weights of the components were con-
sidered, according to the following procedures and amounts (see Table 12.3):
ppm 3 PM
3
mg=m 5 ð12:4Þ
24:45
Thus the expression to calculate the emission rate of gas engines is
given by