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 PulseGuard offers pulsation dampers. | Please Phone 910-270-2737 We have people not voicemail | Call toll free UK 08080-567-7423 |
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Calculating FLUCTUATION
2. You then need to calculate your Fluctuation
Calculate - Flow per Second / Hz.
= (Pulse x Pulse) / Square of Displacers (e.g. # of Displacers x # of Displacers)
= Fluctuation3. GO ON to find your Hertz Volume GO TORight your answer down.
NUMBER OF DISPLACERS:
1 = simplex |
(Single piston or plunger - may also be pushing oil to move a diaphragm) |
| 2 = duplex | (Two plungers etc. - the flow will still come to a halt as one changes over to another) |
| 4 = triplex | (Three, now there will be continuous flow, provided the volumetric efficiency is high enough) |
| 6.5 = quadraplex | (Four, sounds better. But the problem is that such a low & even number maximizes the chances of resonance, so flow through interception becomes a necessity) |
| 9 = quintuplex | (5, Good - overlap even at low volumetric efficiencies) |
| 18 = septuplex | (7, Also good, BUT now the number of pulses per second is becoming high. High frequencies may easily match the high frequency of short pipe nodes. If this occurs what ever level of residual forcing pulsation you go down to, the system stands a good chance of amplifying the residual pulsation to a high level. |
