Quote:
Originally Posted by IndySam
Cv will vary according to the pressure used and even temperature, it must be calculated for every given situation. It is a poor value to use for our purposes.
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Cv does
NOT change due to pressure or temperature, in fact the pressure and temperature are standardized (60'F and 1 PSI) as is the medium (water). Cv is a constant for a given valves geometry (orifice size, orifice geometry, mass flow diruption and eddies, etc) and can be
used to calculate the mass flow rate through a valve.
Flow rate (mass flow) does change with pressure and temperature( and the medium flowing through the valve).
My strongest FIRST memories, and the teams that leave the biggest impact on me, are teams that seem like they have every reason to give up, but never do. - Chris is me [more] 
17-08-2012, 19:09
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