solve 6.21! 6.20.* It is estimated that a burning dump emits 3 g/s of NO,. What is the concentration of NO,directly downwind from this source at distances of 0.5, 1, 3, and 5 km on an overcast nightwith a wind speed of 7 m/s? Assume the dump to be a ground-level point source with noplume rise.6.21. The owner of the dump in Problem 6.20 suggests things would be much better if a 20-mstack were erected on the dump; it could then be considered a point source at an elevationof 20 m. Repeat Problem 6.20 for this condition. Is the owner right?

Given DataFrom above question we had getemission without stack=284μg/m3QNOx=3g/sH=20m

6.21. The owner of the dump in Problem 6.20 suggests things would be much better if a 20-m stack were erected on the dump; it could then be considered a point source at an elevation of 20 m. Repeat Problem 6.20 for this condition. Is the owner right?

6.21. The owner of the dump in Problem 6.20 suggests things would be much better if a 20-m stack were erected on the dump; it could then be considered a point source at an elevation of 20 m. Repeat Problem 6.20 for this condition. Is the owner right?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter9: Heat Transfer With Phase Change

Section: Chapter Questions

Problem 9.28P

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

Question

solve 6.21!

6.20.* It is estimated that a burning dump emits 3 g/s of NO,. What is the concentration of NO,
directly downwind from this source at distances of 0.5, 1, 3, and 5 km on an overcast night
with a wind speed of 7 m/s? Assume the dump to be a ground-level point source with no
plume rise.
6.21. The owner of the dump in Problem 6.20 suggests things would be much better if a 20-m
stack were erected on the dump; it could then be considered a point source at an elevation
of 20 m. Repeat Problem 6.20 for this condition. Is the owner right?

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