does affinity law(for pump) applicable to blower??
10/22/2009 10:58 AM
can we use affinity laws for relating speed of motor with pressure and flow rate in multistage centrifugal blower (7 impellers). can i use this law in blower which is meant for pumps.???
Re: does affinity law(for pump) applicable to blower??
10/23/2009 6:19 AM
You won't go far wrong if you take flow varies as blower speed, pressure varies as speed2. But this only applies along a system curve with no static pressure and dynamic pressure varying as flow2. If you have blower curve at nominal speed, above enables you to draw curves at other speeds.
If the application is e.g. tank aeration on sewage treatment, typically static is 4 - 5 mwc. By drawing the system curve including static, you can find variation of flow with speed for your actual system.
Cheers.........Codey
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does affinity law(for pump) applicable to blower??
Re: does affinity law(for pump) applicable to blower??
