9. On a clear summer afternoon with a wind speed of 3.20 m/s, the particulate concentration...

 
 

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9. On a clear summer afternoon with a wind speed of 3.20 m/s, the particulate concentration was found to be 1,520 ug/m3 at a point 2 km downwind and 0.5 km perpendicular to the plume centerline from a coal-fired power plant. Given the following parameters and conditions, determine the particulate emission rate of the power plant: Stack parameters: Height = 75.0 m Diameter 1.50 m Exit velocity 12.0 m/s Temperature 322°C Atmospheric conditions: Pressure 100.0 kPa Temperature 28.0°C Key to stability categories Surface wind speed (at 10 m) (m/s) <2 2-3 3-5 5-6 >6 Stability class A room thi B C TABLE 2 Values of a, c, d, and f for calculating s, and s x≤ 1 km d 1.941 1.149 0.911 D E a 213 156 104 68 Daya Incoming solar radiation "The neutral class, D, should be assumed for overcast conditions during day or night. Note that "thinly overcast" is not equivalent to "overcast." Notes: Class A is the most unstable and class F is the most stable class considered here. Night refers to the period from one hour before sunset to one hour after sunrise. Note that the neutral class, D, can be assumed for overcast conditions during day or night, regardless of wind speed. "Strong" incoming solar radiation corresponds to a solar altitude greater than 60° with clear skies; "slight" insolation corresponds to a solar altitude from 15° to 35° with clear skies. Table 170, Solar Altitude and Azimuth, in the Smithsonian Meteorological Tables, can be used in determining solar radiation. Incoming radiation that would be strong with clear skies can be expected to be reduced to moderate with broken (5/8 to 7/8 cloud cover) middle clouds and to slight with broken low clouds. (Source: Turner, 1967.) 50.5 34 Strong A A-B B C с F (Source: Martin, 1976.) С Moderate A-B B B-C C-D D 440.8 100.6 61 Slight B C с 33.2 22.8 14.35 D D f 9.27 3.3 0 0.725 -1.7 0.678 -1.3 0.74.0 -0.35 Thinly overcast or ≥ 1/2 Low cloud ≤ 3/8 Cloud E D D D Night" C 459.7 108.2 61 44.5 55.4 62.6 x > 1 km d 2.094 1.098 0.911 F E D D 0.516 0.305 0.18 f -9.6 2 0 -13.0 -34.0 -48.6 9. On a clear summer afternoon with a wind speed of 3.20 m/s, the particulate concentration was found to be 1,520 ug/m3 at a point 2 km downwind and 0.5 km perpendicular to the plume centerline from a coal-fired power plant. Given the following parameters and conditions, determine the particulate emission rate of the power plant: Stack parameters: Height = 75.0 m Diameter 1.50 m Exit velocity 12.0 m/s Temperature 322°C Atmospheric conditions: Pressure 100.0 kPa Temperature 28.0°C Key to stability categories Surface wind speed (at 10 m) (m/s) <2 2-3 3-5 5-6 >6 Stability class A room thi B C TABLE 2 Values of a, c, d, and f for calculating s, and s x≤ 1 km d 1.941 1.149 0.911 D E a 213 156 104 68 Daya Incoming solar radiation "The neutral class, D, should be assumed for overcast conditions during day or night. Note that "thinly overcast" is not equivalent to "overcast." Notes: Class A is the most unstable and class F is the most stable class considered here. Night refers to the period from one hour before sunset to one hour after sunrise. Note that the neutral class, D, can be assumed for overcast conditions during day or night, regardless of wind speed. "Strong" incoming solar radiation corresponds to a solar altitude greater than 60° with clear skies; "slight" insolation corresponds to a solar altitude from 15° to 35° with clear skies. Table 170, Solar Altitude and Azimuth, in the Smithsonian Meteorological Tables, can be used in determining solar radiation. Incoming radiation that would be strong with clear skies can be expected to be reduced to moderate with broken (5/8 to 7/8 cloud cover) middle clouds and to slight with broken low clouds. (Source: Turner, 1967.) 50.5 34 Strong A A-B B C с F (Source: Martin, 1976.) С Moderate A-B B B-C C-D D 440.8 100.6 61 Slight B C с 33.2 22.8 14.35 D D f 9.27 3.3 0 0.725 -1.7 0.678 -1.3 0.74.0 -0.35 Thinly overcast or ≥ 1/2 Low cloud ≤ 3/8 Cloud E D D D Night" C 459.7 108.2 61 44.5 55.4 62.6 x > 1 km d 2.094 1.098 0.911 F E D D 0.516 0.305 0.18 f -9.6 2 0 -13.0 -34.0 -48.6

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Solution Given data wind speed U 32 ms X 1520 11mm 3 downwind x 2km y 05km 5oo... View the full answer