Air Driven vs. Mechanical Vacuum Pumps

The hoax rated power output of electro-mechanical vacuum pumps:
All electro-mechanical vacuum pumps have a labeled rated power output which is used to estimate and calculate the power and energy consumption. The rated power output is misleading since it reflects the power consumption when no vacuum level is generated, only a flow. In most vacuum-handling applications a certain vacuum level is needed to lift and hold. When the electro-mechanical pump starts to generate a vacuum level the power consumption dramatically increases with up to 50%. The most common installation for an electro-mechanical vacuum pump also include a vacuum valve which is closed during release or when the pump is not doing a job. During that time, the electro-mechanical vacuum pump will work against a max vacuum level and the power consumption is at maximum, well above the rated power output.
A compressed air-driven vacuum pump from Piab is in most cases much more efficient than an electro-mechanical vacuum pump. As an air driven vacuum pump never uses more energy than absolutely necessary, companies can reduce their carbon footprint as well as their energy costs.

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Science & Technology

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• Vacuum
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• Air
• Mechanical
• energy
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• p6010
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• piab
• P6010
• vacuum
• pump
• coax
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[joskar1969]

In a vacuum handling system with suction cups, each cycle has one phase where the cups are working (sucking) and one phase where the object is released and the lifting device is brought back to start position. During the second phase (ex. return back with robot) the vacuum line has to be blocked or the vacuum pump "turned off". A typical cycle time is 1-5 Sec. It is not possible to turn an electro-mechanical pump on&off in such short intervals, so vacuum line in blocked by a valve,

[jayhil31]

I'm not sure what engineer would design a pump system that would block the vacuum line when the system in not in use. If you're going to fairly compare the two you have to figure what the load is with the vacuum line open when not in use.