bunnyscience

Site Navigation

Your Account

Choose Language

Changes to Step #29

Edit by Guy Kuo —

Edit approved by Guy Kuo

Before
After
Unchanged

Step Lines

[title] Fans Tested
[* icon_noteicon_reminder] Regardless of Fan HALO limitations, the oxygen HALO configuration '''already''' works well with 1012 L/min or higher flow..
[* icon_noteicon_reminder] Regardless of Fan HALO limitations, the oxygen HALO configuration '''already''' works well with 1012 L/min or higher flow..
[* black] Typical, small tubaxial fans lack sufficient static pressure capability for use in the Fan HALO configuration. We are drawing air in ''through'' a viral filter. Static pressure capability is vital.
[* black] A San Ace 9GA0612P6S001 60 mm fan is just adequate if one does not move briskly. Its rated airflow is 24.7 CFM (0.692m³/min) and static pressure 0.326 in H2O (81.2 Pa). This is the original fan which allowed me to wear the Fan HALO configuration for hours.
[* black] To bring the 60 mm tubaxial fan up to sufficient airflow, a twin intake filter manifold is recommended.
[* black] A 51 mm blower fan yields much better performance. NMB Technlogies BM5115-04W-B50-L00 blower fan with 3.5 CFM (0.098m³/min), but higher static pressure of 0.803 in H2O (200.0 Pa) provides ample airflow and pressure with a single air intake filter.
[* black] Other blower fans may yield more ideal combination of power draw, static pressure, flow rate, noise, and availability, but I am limited in project prototyping budget.
[* icon_note] A San Ace 9GA0612P6S001 60 mm fan is usable if one does not move briskly. Its rated airflow is 24.7 CFM (0.692m³/min) and static pressure 0.326 in H2O (81.2 Pa). This is the original fan which allowed me to wear the Fan HALO configuration for hours.
[* icon_note] To allow a 60 mm tubaxial fan to pull sufficient airflow, a twin intake filter manifold was needed.