Building a Flow bench

[Greg Hermann]

At 8:07 AM 2/1/02, Neil.Poersch at mts.mb.ca wrote:
>FWIW  I recall reading some web page where a fellow did build a flow bench
>using leaf blowers but he used six in parallel to obtain 25 in/hg.
>
>Neil

That's inches of H2O, again !! And would have to be compounded two or maybe
three deep to get close !!

Greg
>
>
>> Ah, but you are forgetting the other important variable, the
>> pressure ratio at which this flow occurs.  The leaf blower specs
>> are for free air on both sides of the turbine, which is probably
>> a pressure ratio of 1.2:1 or something really low.  When you
>> go to put it on a flow bench you want (iirc from a previous
>> post on this thread) about 25 in/Hg, or about 17 kPa absolute,
>> giving a pressure ratio across the turbine of about 6:1 or
>> higher; it just ain't gonna happen.
>
>
>
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