Latent loads and pollutants have to be removed by an additional ventilation system.
Basically, the windows and doors of a building can be
used to supply fresh air to the spaces w18x, but preferably,
mechanical ventilation should be used to always guarantee
an energy efficient air exchange rate w21x. For mechanical
ventilation, either displacement ventilation 2 or mixing
flow systems can be used, with a supply airflow reduced
according to the hygienical requirementsw2,8,10x.
A German survey w23x shows that about 10% of all
cooled ceiling applicationsby cooling area.rely on natural
ventilation, i.e., these were installed without any additional
mechanical ventilation system. Both displacement