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Message Subject
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Anyone know of any sites online where you can ask a complicated engineering question?
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Poster Handle
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Anonymous Coward |
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I have a small pump system for a project that requires a small manifold. The total volume of the manifold and the tubing is 2.9828 cu inches. Here is my pump specs:
Inflation time < 8s (from 0-200 mmHg in a 100cc tank) Air flow > 70mL/min Max pressure > 360mmHg Leakage max 36mmHg/15sec from 300mmHg at 70cc tank Pump time - 7sec on / 7sec off
From the pump is a 3/16" x 12" tube (volume = .3311 cubic inches) which attaches to a small cylindrical manifold (1"x3" - volume = 2.3571 cubic inches) that has two air rails (each air rail (1/4" x 3" -volume = .2946 cubic inches). Total volume should be 2.9828 cubic inches.
I was hoping to see if someone could figure out how big of an orifice I would need on each rail for maximum pressure, within the 7 seconds on, 7 seconds off (basically optimal orifice pressure and size where manifold drops stays at a constant positive pressure at the end of the 7 second off phase wherein the 7 seconds on phase starts to pump and build pressure. Any help on this would be appreciated. Thanks.
Quoting: Anonymous Coward 1018748 Inflation time < 8s (from 0-3.86735494 psi in a 6.10237441 cubic inch tank) Air flow > 4.27166 cubic inches/min 4.27166 =0.0711943 cubic inches/sec Max pressure > 6.96123889 psi Leakage max 0.696123889 psi/15s = 0.04640825926 psi/s @ 4.27166209 cubic inch tank ..for reference
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