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).
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.
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. . .
