Building a Flow bench

[Neil.Poersch at mts.mb.ca]

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


> 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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