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Recent content by spannerInTheWorks
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Pump down time for vacuum pump
I'm getting different result from what you got using the first equation that I had presented in the original post. T = (V / D) * loge (A / (A - B)) V = 0.03472 cu. ft. D = 0.42 scfm gives me T = 0.133 min which in seconds comes to T = 8 sec- spannerInTheWorks
- Post #5
- Forum: Pump engineering
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Pump down time for vacuum pump
+/- 50 mbar would do. Yes I agree with you that the equations don't take into account the pipe dimensions and the valve. However I needed a rough estimate for pump sizing.- spannerInTheWorks
- Post #4
- Forum: Pump engineering
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Pump down time for vacuum pump
I am getting conflicting results on finding the pump downtime for a diaphragm vacuum pump for air. There is a 60 cu. inch vessel that I need to evacuate to 600 mbar abs. in about a second. The current pump that I have has the following ratings Free flow = 12 liter/min Max vacuum = 500 mbar...- spannerInTheWorks
- Thread
- Replies: 4
- Forum: Pump engineering
