[Greenbuilding] [BULK] Passive Ventilation for Tight Houses

[Clarke Olsen]

>    Motorized dampers come in 2 versions: default open and default  
> closed.
       My thoughts on a passive exchanger would involve concentric pipes
       (smooth steel outer, corrugated aluminum inner) with reducers  
and tees
       to allow the exhaust air to be drawn out by chimney effect,  
while the
       intake air would fall past to a floor level outlet.
       Clarke Olsen
>>
>> I want to consider how we provide passive ventilation to a tight  
>> home.....
>> ....I am thinking outloud about the possibility of a passive  
>> ventilator that
>> would work like this.  We would install a vent pipe that would  
>> extend 4'
>> above roof creating a stack affect.  If we could measure the air flow
>> through that vent, we could locate a motorized damper to open and  
>> close when
>> the appropriate ventilation is achieved.
>>
>> To compel our occupants of tight buildings to vent, could be have the
>> dampers set to open when the electricity goes off?
>>
>> Eli
>>
>>
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