Answer / sahayam

Dear sir,
Please give the answer my question
I have one blower its impeller dia 1200mm
impeller width -115mm
shaft dia 90mm
weight of impeller - 300kgs
impeller rotating speed -1800 Rpm
Blower motor 125Hp/4p(belt drives)
Blower pressure - 700 mmWG
now! what is the Gd square valve
what is the axial loads

Answer / gyan guru

gd2 is the value which is meant to check that whether a
given motor will mingle with an impeller or not. Its a
sought of age of fan and motor.

Technically , it tells us about the measure of the ability
of the motor to attain its a rated speed from rest.

This is calculated with the formula
4 x m x r2

m = mass of the impeller

r = radius of gyration

r shall be 0.4 times the radius of impeller

I hope its sought of clear now

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