I would appreciate some guidance from the experts regarding the calculation of tower diameter
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Dear masters, as shown in the figure above, there is a formula for calculating the speed of an empty tower. Students are unable to understand this formula – they don’t know why the steam flow rate is 4 times greater, and why the tower diameter needs to be squared and then multiplied by π. I would appreciate it if you could help the students understand this. Thank you, and wish you all good health!
Empty tower flow velocity = Vs/tower cross-sectional area； Tower cross-sectional area = radius squared * PI = (D/2)^2 * PI = D*D/4*PI; Substituting this value: Void tower velocity = Vs / (D*D/4*PI) = 4Vs / (D*D*PI) ； PI=π
You didn’t do well in junior high, and then you studied humanities in high school? Once you understand the formula for the area of a circle and the formula for the volume of a cylinder, it will become clear
The cross-sectional area S = πr^2 = (πD^2)/4; it’s just about calculating the area of a circle in elementary school
Thank you to all the teachers for your guidance. I was wrong; I thought D was the diameter. Thank you to the teachers for their guidance!
I understood it right away! Thank you! I see, so that 4 comes from that – it’s exactly the square of the radius. In that case, it can be replaced directly with 4, without having to calculate the radius first. Thank you!
Thank you. Ah, my brain isn’t working properly, hahaha. Thank you, master!
I’m so sorry; I made a joke. . . . . . .
Kids, please remember some special numbers, such as π/4=0.785, etc.; you might see such numbers in others’ calculation books in the future
Isn’t D the diameter? ? ? ? ?