3. Calculate the total particulate mass concentration (g/m3) of the diesel engine exhaust aerosol when the...

  

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3. Calculate the total particulate mass concentration (g/m3) of the diesel engine exhaust aerosol when the emissions were found by measuring two particle modes (you can assume the particles are spheres): 1) soot particles (GMD = 100 nm, number concentration 1.1 * 10^6 #/cm3, density 2.2 g/cm3) 2) nucleation particles (GMD = 10 nm, number concentration 1.2 * 10^7 #/cm3, density 1.8 g/cm3). 4. The spherical mineral dust particle has a diameter of 3.5 m and a density of 5.3 g/cm3. Calculate the settling velocity of the dust particle. What diameter of a water droplet has the same settling velocity? The following formula can be found for the terminal velocity of a particle: V = = Ppdg where 2 187 1.807 * 10-5 Pa*s kg Pp particle density ), d = particle diameter (m), g = 9.81 2, n = m m 3. Calculate the total particulate mass concentration (g/m3) of the diesel engine exhaust aerosol when the emissions were found by measuring two particle modes (you can assume the particles are spheres): 1) soot particles (GMD = 100 nm, number concentration 1.1 * 10^6 #/cm3, density 2.2 g/cm3) 2) nucleation particles (GMD = 10 nm, number concentration 1.2 * 10^7 #/cm3, density 1.8 g/cm3). 4. The spherical mineral dust particle has a diameter of 3.5 m and a density of 5.3 g/cm3. Calculate the settling velocity of the dust particle. What diameter of a water droplet has the same settling velocity? The following formula can be found for the terminal velocity of a particle: V = = Ppdg where 2 187 1.807 * 10-5 Pa*s kg Pp particle density ), d = particle diameter (m), g = 9.81 2, n = m m