Engineering, 24.02.2020 17:23 chrisswid
A bar with volume 500 m3 has 50 smokers in it, each smoking two cigarettes per hour. An individual cigarette emits, among other things, about 1.4 mg of formaldehyde (HCHO). Formaldehyde converts to carbon dioxide with a reaction rate coefficient k k = 0.40/h. Fresh air enters the bar at the rate of 1000 m3/h, and stale air leaves at the same rate.
a) Draw the mass balance diagram for this scenario.
b) Assuming complete mixing, estimate the steady-state concentration of formaldehyde in the air.
c) At 25oC and 1 atm of pressure, how does the result compare with the threshold for eye irritation of 0.05 ppmv?
Answers: 3
Engineering, 04.07.2019 03:10
What precautions should you take to prevent injuries when dealing with heavy loads?
Answers: 1
Engineering, 04.07.2019 12:10
On a average work day more than work place firs are reorted
Answers: 1
Engineering, 04.07.2019 18:10
Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.
Answers: 1
Engineering, 04.07.2019 18:10
Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1
Answers: 1
A bar with volume 500 m3 has 50 smokers in it, each smoking two cigarettes per hour. An individual c...
Computers and Technology, 11.11.2021 14:00
Mathematics, 11.11.2021 14:00
Mathematics, 11.11.2021 14:00
Spanish, 11.11.2021 14:00
Biology, 11.11.2021 14:00
Health, 11.11.2021 14:00
History, 11.11.2021 14:00
Mathematics, 11.11.2021 14:00
Mathematics, 11.11.2021 14:00
Mathematics, 11.11.2021 14:00
Mathematics, 11.11.2021 14:00
Mathematics, 11.11.2021 14:00