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by DoctorOetker
2336 days ago
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from a physics perspective there is nearly no lower limit on the pressure differential for a given flux (liters per second) of air (ignoring the mixing entropy). just make the analogy pressure ~ voltage, flux ~ current, filter ~ resistance. A doubling in flux can be achieved either by doubling the voltage across the resistor ( ~ doubling pressure differential across the filter), OR by halving the resistance of the filter ( ~ placing 2 filters in parallel, without halving the filter thickness) so technically a PC fan could blow at a typical PC fan pressure differential and flow rate purified air across an arbitrary number of layers of HEPA, as long as enough of those [N layers of HEPA] in parallel... |
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