Assignment 4-2013 soln

5 gkm for new vehicles emission 75 reduction distance

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Unformatted text preview: icles emission (75% reduction) = Distance that the vehicle must travel to reach required emission = ⁄ (b) Hydrocarbon emissions in uncontrolled vehicles = 10 g/Km For new vehicles emission rate (reduced by 90 %) = Distance that the vehicle must travel to reach required emission = = 43960 Km = 27315.478 miles ⁄ Solution: Mass flow rate is calculated as: ⁄ ( ) ( ⁄ ) ( ) ⁄ Corresponding concentration is calculated as: Assuming STP at night, ( ) ⁄ = ⁄ = 58.78 Steady state concentration = ( ⁄ = ⁄ ( [ ( ⁄ ( = 60 ⁄ ) Or { ( (⁄ )) } ⁄ { = = 2.16 hrs ( ( ⁄ )) }...
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