Quote:
Originally posted by myv65
Lots of little holes that equal the same cross section area as a single bigger hole will have much higher head loss for a given flow. This is the other consideration along side that which Cathar has already mentioned.
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My rough guess for PD based on dubious extrapolation of BIlla data* .Equated the PD in a 0.25" Nozzle to that in a 14" length of 0.25" ID pipe then used this calculator
http://www.aps.anl.gov/asd/me/
*
http://www.thermal-management-testin...vs.%20flow.gif