Many researches demonstrate that increasing the ceiling height of naturally ventilated hospital wards can provide a better IAQ and allow for reducing the risk of infection transmission. It has been interpreted that increasing ceiling height increases temperature stratification which concentrates hot air above occupied space. But does anyone one the explanation of the same phenomenon regarding airborne particles and contaminants?
Ifdisplacement ventilation, it should work, for pollutants going with the air.
Dear Alia,
Smaller the room larger the ventilation rate. In any IAQ problem dilution of the pollutant concentration is done by either increasing the fresh air supply or preventing source contaminants.
About your question, if height of the room is increased, that increases the room size (by volume). It may be naturally ventilated or machine assisted, all the pollutant concentration level will automatically comes down ie. CO2 level, PM or any other airborne contaminants.
with regards,
P.Thirumal
Dear Thirumal
If, as you said, larger the room smaller the ventilation rate, will this effect cancel the decrease because of increase in Volume?
Narayanan
Thanks all for your informative answers...
Dr Angui, will you please explain more about the effect of windows location? or provide me with resources that discuss this issue.. i really want to know more..
and i agree with Dr Narayanan.... i thought that increasing room volume increases ventilation rate for a given number of ACH..
- Badges
- Science topic
- Similar topics
- Engineering
- Modeling