The air shed over a city can be considered by a completely stirred tank reactor (CSTR) model with two sides of 2×10° m in length and a mixing depth of 500 m. Horizontal wind blows at 4 m/s from one side of the box and exits from the opposite side. Assume that within the box, the air is well mixed all the time. Within the air shed, benzene (CH6) is emitted by automobiles, power plants, and factories at a rate of 0.4 kg/s. No benzene is brought to the city by wind. When equilibrated, what is the benzene concentration in the atmosphere? Please sketch the model first. Pay attention to the units.

The air shed over a city can be considered by a completely stirred tank reactor (CSTR) model with two sides of 2×10° m in length and a mixing depth of 500 m. Horizontal wind blows at 4 m/s from one side of the box and exits from the opposite side. Assume that within the box, the air is well mixed all the time. Within the air shed, benzene (CH6) is emitted by automobiles, power plants, and factories at a rate of 0.4 kg/s. No benzene is brought to the city by wind. When equilibrated, what is the benzene concentration in the atmosphere? Please sketch the model first. Pay attention to the units.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

In a uniform open channel flow, O the line representing the total energy is parallel to the bed of the channel. O the total energy remains constant along the channel. O the specific energy decreases along the channel. the total energy line either rises or falls along the channel depending on the state of the flow.
1.25 m head of water is flowing over a 36-m high spillway, hence, the percentage of energy dissipated along the spillway surface, is approximately: 70 % O 45 % O 55 % O 80 % O
If the reaction rate coefficient of BOD is 0.3 1/d at 20 oC, what will it be if the temperature is raised to 30 degree C?
A jet of water issues from a 5 cm diameter nozzle, held vertically upwards, at a velocity of 20 m/s. If air resistance consumes 10% of the initial energy of the jet, then it would reach a height above the nozzle of m.
How many hyl of steam at 1600k and 0.20 mpa can be safely placed in a tetrahedon container with edge of 2.947 m?
I need hand written solution only otherwise I will down vote
9. Consider the NOx emissions from two rural sources. The second source is located 500 m south and 500 m east of the first source. Source 1 emits 20.5 g/s and has an effective height of 100 m. Source 2 emits 35 g/s and has an effective height of 150 m. Sketch the locations of the stacks and the receptor site. Determine the concentration at a receptor located 4 km east and 200 m south of source one. Atmospheric conditions are neutral with a westerly wind of 5 m/s measured at 10 m.
During the production of biodiesel, glycerin is a waste product and is collected by gravity separation because its SG (1.26) is much higher than that of biodiesel. Glycerin is withdrawn from the bottom of the separation tank through a pipe that has p₁ = 350 kPa gage, where D = 70 cm and the flowrate is 680 L/s. Find the pressure at section 2, which is 0.8 m higher and where the diameter has been reduced to d = 35 cm. Assume the flow is inviscid. (Gravity acceleration: g = 9.81 m/s²) Biodiesel Glycerin O 412 kPa O 311 kPa O 356 kPa O 257 kPa d 2
A piping system supplies 6000 Ipm of water at 25°C through a DN200 Schedule 40 steel pipe. A butterfly valve is placed on this pipeline to regulate the flow. The expected energy loss through this valve is most likely: 0.31 m 0.49 m 0.38 m O O 0.41 m 0.11 m 0.15 m 0.12 m 22 m 0.09 m
At critical depth O The discharge is maximum for a given specific energy. O The specific energy is maximum for a maximum discharge. O The specific energy is minimum for a maximum discharge. O The discharge is minimum for a given specific energy.
An industrial plant emits lead at 300 g/s from a 50 m high stack at 300°C with a stack velocity of 12 m/s. The stack diameter is 2 m. The wind speed is 5.0 m/s, the air temperature is 10°C, the atmospheric stability class is C, and the atmospheric pressure of 102 kPa. What is the effective stack height?
Steam enters a turbine at 30 bar, 300°C (u = 2750 kJ/kg, h = 2993 kJ/kg) and exits the condenser as saturated liquid at 15 kPa (u = 225 kJ/kg. h = 226 kJ/kg). Heat loss to the surrounding is 50kJ/kg of steam flowing through the turbine. Neglecting changes in kinetic energy and potential energy, the work output of the turbine (in kJ/kg of steam) is