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what is inertia capacity of pump ?

what is inertia capacity of pump ?

what is inertia capacity of pump ?

(OP)
as captioned

RE: what is inertia capacity of pump ?

I think you mean the "Rotational mass moment of Inertia" = the sum of the disk's (impeller) and the water's (or other product), contained in the volute around the disk, individual rotational mass moments.  Rotational mass moment of inertia describes a mass' resistance to changes in rotational speed.  In the case of a pump, the acceleration when starting the pump from 0 rpm to operating rpm, or once rotating, the resistance of the pump to a change in rpm, or the deceleration of the pump's rpm when stopping.  In each case a specific amount of Torque must be applied to that mass for a certain length of time to effect a given change in rpm.  

BigInchworm-born in the trenches.
http://virtualpipeline.spaces.msn.com

RE: what is inertia capacity of pump ?

(OP)
so, if customer request that manufacture provide inertia capacity, basically what does it means ?

RE: what is inertia capacity of pump ?

The customer wants the pump manufacturer to provide the rotational moment of inertia data for the pump.  I would also want that data for the coupling and motor too.

The customer probably wants to have that data to do a hydraulic analysis for start-up and shut-down conditions.

BigInchworm-born in the trenches.
http://virtualpipeline.spaces.msn.com

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