Question: A 100m tall chimney stack emits hydrogen chloride (density = 1.64kg/m3 ) at a rate of 1m3 /s. The plume initially rises a further 5m

A 100m tall chimney stack emits hydrogen chloride (density = 1.64kg/m3 ) at a rate of 1m3 /s. The plume initially rises a further 5m directly above the exit before being convected horizontally by a wind blowing at a speed of 10m/s under neutral atmospheric conditions. The terrain has a roughness length of zo = 0.03m. A small housing development commences at a location which is a distance of x = 1500m downwind of the stack and y = 500m from the centre-line of the plume.

(a) What is the pollution concentration (kg/m3 ) at ground level at the start of the housing development? [Answer: 43 µg/m3 ]

(b) If the wind direction changed so that the plume axis pointed directly towards the housing development, what would be the new ground level concentration at the same location as before ? (Assume that the wind speed and the rate of emission remain unchanged). [Answer: 1537 µg/m3 ]

Step by Step Solution

★★★★★

3.54 Rating (158 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Chemical Engineering Questions!

A 100m tall chimney emits sulphur dioxide at a rate of 2.5kg/s in a highly buoyant plume. The plume rise (h) after exiting the chimney follows a trajectory which is given by the equation: h = 0.13...

The following data represents the prices (in R) of 50 items purchased by a shopper. Price R Frequency 0.00 > 20.00 6 20.00 < 40.00 9 40.00 < 60.00 18 60.00 < 80.00 13 80.00 < 100.00 4...

Line x = 0, y = 0, 0

Please answer ASAP! Thank you Outback Outfitters sells recreational equipment. One of the company's products, a small camp stove, sells for $90 per unit. Variable expenses are $63 per stove, and...

Outback Outfitters sells recreational equipment. One of the company's products, a small camp stove, sells for $100 per unit. Variable expenses are $70 per stove, and fixed expenses associated with...

Outback Outfitters sells recreational equipment. One of the companys products, a small camp stove, sells for $130 per unit. Variable expenses are $91 per stove, and fixed expenses associated with the...

Outback Outfitters sells recreational equipment. One of the company's products, a small camp stove, sells for $130 per unit: Variable expenses are $91 per stove, and fixed expenses associated with...

Outback Outftters sells recreational equipment. One of the company's products, a small camp stove, sells for $50 per unit. Veriable expenses are $32 per stove, and fixed expenses associated with the...

all i need us required 3 & 4 please Outback Outfitters sells recreational equipment One of the company's products, a small camp stove sells for $150 per unit Variable expenses are $105 per stove, and...

Outback Outfitters sells recreational equipment. One of the company's products, a small camp stove, sells for $120 per unit. Variable expenses are $84 per stove, and fixed expenses associated with...

Consider a science fiction universe in which the number of photons N is constant, at a concentration of 1020 cm3. The number of thermally excited photons we assume is given by the result of Problem...

Notes receivable- interest accrual and collection Moiton Co.'s assets include notes receivable from customers. During fiscal 2010, the amount of notes receivable averaged $46,250, and the interest...

Which one of these statements comparing the suitability and fiduciary standards is correct? A ) Registered representatives are never held to both the flociary and suitability standards. B ) All...

The colorimeter and Beer's Law are widely used in real life applications. Please go online and cite another application for this technique (aside from quantifying dyes in a solution), paste your link.

The ground-state electron configuration of He; is (o,1s) (o,1s)' . Calculate the bond order of Hez. (A) 3/2 () 1/2 () 1 (D) -1/2

(Yield to maturity) The market price is $925 for a 16-year bond ($1,000 par value) that pays 9 percent annual interest, but makes interest payments on a semiannual basis (4.5 percent semiannually)....

information to answer the question: the ambient laspe rate (above 200 m) is the environmental lapse rate. So, below 200 m, plot the temperature profile (from the gradient, determine environmental...

Hot flue gases from a combustion furnace flow though a chimney, which is 7 m tall and has a hollow cylindrical cross section with inner diameter d i = 30 cm and outer diameter d o = 50 cm. The flue...

Question 1 [ 2 5 marks in total ] . A manufacturing plant emits 2 0 m 3 s - 1 of gas from a chimney stack that is 5 0 m high with an exit diameter of 1 m . This gas contains hydrogen sulphide ( H 2 (...

Waste gases at a flowrate of $15 \mathrm{~kg} / \mathrm{min}$ leave a plant through a chimney stack $120 \mathrm{~m}$ high. The outer diameter of the chimney is $1.5 \mathrm{~m}$ and the walls...

A child runs at a constant speed of 2.00 m/s along a 10.0m horizontal field, then quickly jumps on a massless sled to slide down a tall snowy hill. After sliding for 10.0m (measured along the hill),...

The supports for a tall chimney must be designed to withstand a $120 \mathrm{mph}$ wind. If the chimney is $10 \mathrm{ft}$ in diameter and $40 \mathrm{ft} \mathrm{high}$, what is the wind force on...