Just curious. What kind of rates of contamination or clogging to the porous filters do you get from a setup like this. Can it clog to the point of impeding fluid flow, or is that able to be stretched for a very long duration with clean enough gas processing before it reaches the filter, or is that not even required. Are the filters designed to be serviced or replaceable? Mech eng here that's been looking into your videos lately, very fascinated by air bearing technology in general. Using porous material like carbon seems like the play for most designs, but I'm curious how big of a problem you tend to have with this material getting "clogged" over time.
These bearings are not plugged by particulate contamination as an orifice air bearing could be. You can pour sand or Teflon tape or the stuff that Schuff off the inside of tubing after a while into a bearing without any effect as even if the whole Plenum is contaminated it has less restriction than the porous media does. Contamination by water or oil does have an effect on the flow through the pours media running clean, dry air through the bearing will clean out water contamination quite quickly. Usually within a few minutes oil takes longer that may take a few hours.
A compressed air cylinder would be in the panel. Even a CO2 cartridge for a paint ball gun would bearings in a 20MW turbine/compressor package for 5 to10 minutes.
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Just curious. What kind of rates of contamination or clogging to the porous filters do you get from a setup like this. Can it clog to the point of impeding fluid flow, or is that able to be stretched for a very long duration with clean enough gas processing before it reaches the filter, or is that not even required. Are the filters designed to be serviced or replaceable? Mech eng here that's been looking into your videos lately, very fascinated by air bearing technology in general. Using porous material like carbon seems like the play for most designs, but I'm curious how big of a problem you tend to have with this material getting "clogged" over time.
These bearings are not plugged by particulate contamination as an orifice air bearing could be. You can pour sand or Teflon tape or the stuff that Schuff off the inside of tubing after a while into a bearing without any effect as even if the whole Plenum is contaminated it has less restriction than the porous media does. Contamination by water or oil does have an effect on the flow through the pours media running clean, dry air through the bearing will clean out water contamination quite quickly. Usually within a few minutes oil takes longer that may take a few hours.
Can these air bearings work to seal a vaccum inside a container with a rotating shaft passing through it?
Yes, they can, in fact, we use that principle to reach into vacuum chambers for the semiconductor industry
Thanks for answering! This is quite insightful.
If the seals are rated for 2000psi, why aren't the porous gas bearings? They are made of the same materials.
+meocats Hi,Turns out we can run bearings at 2000psi. The issue is the bearing needs to contain the pressure
What about startup when process pressure is not high enough?
A compressed air cylinder would be in the
panel. Even a CO2 cartridge for a paint ball gun would bearings in a 20MW
turbine/compressor package for 5 to10 minutes.
Sohail Hassan Rana kind of oil and period change
Kind of oil and period change