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Changes to Step #9

Edit by Guy Kuo

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[title] Configuration for Full PAPR
[* blackgreen] A fan draws room air through an anesthesia viral filter to fill the halo bag. Full mobility is possible with a 12 volt battery packpack.
[* black] However, fanFan power is limited and stepsmeasures are needed to enhance airflow volume and routing. TwoTWO expiratory valves are a must. You may also need to add short, corrugated tubing to the halo to better route expirationsairflow and reduce fogging.
[* blackicon_note] I have successfully worn this configuration for several hours walking around my hospital and even rounding on patients. You can be mobile, but definitely cannot move fast.
[* icon_note
] A higher power, blower fan is a reasonable upgrade to the design. If sufficient airflow increase, expiratory viral filters could also be added to remove need for surgical mask. However, present configuration with 2 watt fan is insufficient airflow for that.
[* blackgreen] A fan draws room air through an anesthesia viral filter to fill the halo bag. Full mobility is possible with a 12 volt battery packpack.
[* black] However, fanFan power is limited and stepsmeasures are needed to enhance airflow volume and routing. TwoTWO expiratory valves are a must. You may also need to add short, corrugated tubing to the halo to better route expirationsairflow and reduce fogging.
[* blackicon_note] I have successfully worn this configuration for several hours walking around my hospital and even rounding on patients. You can be mobile, but definitely cannot move fast.
[* icon_note
] A higher power, blower fan is a reasonable upgrade to the design. If sufficient airflow increase, expiratory viral filters could also be added to remove need for surgical mask. However, present configuration with 2 watt fan is insufficient airflow for that.

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