engineer123
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- Mar 21, 2015
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Hey guys,
I was solving an atmospheric dispersion question and was a little confused on something. In the problem, stability class is C and effective stack height H was given as well. Since the downwind distance X was not given, they used the formula H/square root of 2 to find the vertical dispersion parameter (z). Then they used the graph on Page 67 of the NCEES Handbook to find downwind distance X using the Class C and vertical dispersion parameter.
Here is my confusion: On Page 52 of the NCEES Handbook, it says this equation is for Neutral atmospheric conditions. Isn't that Class D then? Can this equation be used for other Stability Classes?
I hope someone can clear this out for me. Thanks so much in advance
I was solving an atmospheric dispersion question and was a little confused on something. In the problem, stability class is C and effective stack height H was given as well. Since the downwind distance X was not given, they used the formula H/square root of 2 to find the vertical dispersion parameter (z). Then they used the graph on Page 67 of the NCEES Handbook to find downwind distance X using the Class C and vertical dispersion parameter.
Here is my confusion: On Page 52 of the NCEES Handbook, it says this equation is for Neutral atmospheric conditions. Isn't that Class D then? Can this equation be used for other Stability Classes?
I hope someone can clear this out for me. Thanks so much in advance
