Bathrooms vents !

[pipedesign]

How many m3/h must I extract mechanicaly from a normal bathroom insde a house ?
thanx !

 

[DouginMB]

If there's omly a toilet, I design for 85 m3/hr. If it's a toilet/shower room, then 170.

 

[azertyuiop]

the 'rule' is 3 to 5 times the room volume you want to keep dry (If there is no chemical contaminants evaporation that require a higher refresh rate to keep ppm's under the normal level identified in the MAK values).

 

[baritone6foot4]

For years the Model Codes required 6 air changes per hour but have lately been rewritten as minimum 50 cfm for intermittent ventilation or 20 cfm for continuous ventilation.

Brian K. Willis, PE

http://www.pfscorporation.com

 

[azertyuiop]

baritone6foot4
You MUST be correct , but it must apply in your country (I suspect USA or Canada). The 'rule' I am referring to is for Germany and more generally european area's , where the refresh rates are linked to generated pollutions in the room , with a minimum of 30 to 50m3/h per person for offices and otherwise non contaminated areas , giving a rule of thumb of 3 to 5 refresh rates per hour per room volume for such area's.

I still learn everyday , great site to be able to learn what is also happening overseas with other engineers. . .