The maximum eight-hour average concentration of carbon

Assignment Help Civil Engineering

Reference no: EM13383461

1. The maximum eight-hour average concentration of carbon monoxide (CO) in an urban area is measured to be 15 ppm. The NAAQS is 9 ppmv (equivalent to 10.3 mg/m3 estimated at P = 1 atm and T = 298.25 °K). Automobile emissions are believed to be the only major source of CO; it is assumed there is no background contribution for other sources. Assume also that CO can be modeled as chemically non-reactive over the period of interest. Answer the following questions:

a) If the average wind speed is 3m/s and the urban area has the dimension of 100 x 100 km with a mixing height of 500m, what is the steady state emission rate (mg/m2-s) of CO by the automobiles that would lead to the measured city air concentration of CO of 15 ppmv?

b)How much of a reduction in the automobile emission rate would be required to achieve the maximum eight-hour average NAAQS for CO at steady state 9ppmv (10.3 mg/m3)?

Reference no: EM13383461

Questions Cloud

If the concentration of no2 is 55 times 105 ppm and the : a 100.0-l flask contains a mixture of no2 gas and co gas. if the concentration of no2 is 5.5 times 105 ppm and the

It contains 578 percent c 364 percent h and 385 percent o : terephthalic acid is an organic compound used in the formation of polyesters. it contains 57.8 percent c 3.64 percent h

You are working as a project analyst for the local gas : you are working as a project analyst for the local gas utility and you have been placed on a project to install an

A series-tuned resonant circuit operates at a resonant : a series-tuned resonant circuit operates at a resonant frequency of 1 mhz and contains a 0.1 microfarad capacitor and

The maximum eight-hour average concentration of carbon : 1. the maximum eight-hour average concentration of carbon monoxide co in an urban area is measured to be 15 ppm. the

Design a circuit that takes as input four bcd encoded : design a circuit that takes as input four bcd encoded digits representing a calendar year after 1582 and produces a

The j-shaped member shown in the figure is supported by a : the j-shaped member shown in the figure is supported by a cable de and a single journal bearing with a square shaft at

You are to design a serial sequence detector your design : you are to design a serial sequence detector. your design will take in a clock reset and a one-bit data signal. your

Smply supported beam l1l2 m long carries a point load gk : simply supported beam l1l2 m long carries a point load gk a kn qk b kn at mid-span and its self-weight with fire

User Account

All Pages