|This is the
issue that must be considered before going further more since the presence of
the stratification level is a must in displacement ventilation. In most cases
in HVAC application, we take it granted that stratification is formed.
|However, it is
possible that there is no stratification. Several researchers (Akinchev,
1966; Ratter and Strizhenov, 1968) thought that there is just a single
circulation zone in a space.
|Then, what is
the case that there is no stratification?
imply that rarefaction (Pjet) is strong enough to push heated air (by
overcoming buoyant force, (gh)) to the lower zone.