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[deleted] t1_iy4fv81 wrote

Reply to comment by flash-tractor in Surgeons work by flashlight as Ukraine power grid battered by scot816

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SnipingShamrock t1_iy4t3zv wrote

I don’t think it’s about laminar flow all laminar flow relates to is the turbulence or Reynolds’s number of the flow, the reason you want positive pressure is so outside air won’t contaminate due to pressure difference. All that matters is you have air constantly being pumped into the room.

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JoJoRenegade t1_iy5ajbx wrote

Ahh my bad I thought what was mentioned was laminar flow. Currently doing my clinicals for surg tech now I know that I have to touch up on that portion

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SnipingShamrock t1_iy5ow3b wrote

I think labs have something crazy like 6 full air changed an hour which means they need to essentially pump in 6 or more rooms full of air every single hour and this massive CFM (cubic feet per minute) load generates a large pressure difference in the room so it’s impossible for the unpressurized hallway to contaminate. pretty cool imo

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SomexBadxNoob t1_iy5zhxx wrote

We do the reverse for asbestos abatement. Negative pressure so no fibers escape.

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flight_recorder t1_iy4wegn wrote

No laminar flow needed. It’s impossible to perfectly seal a room like that (well, not impossible. Just extremely expensive) so they pump in a large volume of fresh filtered air which ensures that any leaks result in filtered air escaping out instead of unfiltered air sneaking in.

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JoJoRenegade t1_iy5ap6v wrote

Ahh mb thought the filters and positive pressure was laminar flow. Currently doing my clinicals for Scrub tech. I'm gonna need to touch up on or requirements

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robul0n t1_iy5u0d8 wrote

Laminar just refers to the state/mixing of the liquid, smooth stream down a calm brook would be laminar, white water rapids would be turbulent. The Reynolds number is just a convenient dimensionless benchmark (dependent on the geometry of the situation if memory serves me right) for defining the boundary between the two types, which is usually kind of fuzzy.

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JoJoRenegade t1_iy60t0p wrote

Yup, it's coming together, now. Saw a video on reddit of Laminar Flow, and my brain connected the two together. Good thing I didn't tell my preceptor that lmao

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