Question

Which is the equation used to find chimney diameter?

(a) D = 1.128\(\sqrt{\frac{Mg}{ρg V}}\)

(b) D = 5.48\(\sqrt{\frac{ρg V}{Mg}}\)

(c) D = 5.48\(\sqrt{\frac{Mg}{ρg V}}\)

(d) D = 1.128\(\sqrt{\frac{ρg V}{Mg}}\)

I had been asked this question in class test.

Question is taken from Draught System topic in division Steam Generators & Accessories of Energy Engineering

Answer 1

Correct choice is (a) D = 1.128\(\sqrt{\frac{Mg}{ρg V}}\)

The explanation: The mass of gases flowing through any cross section of the chimney is given by