In practice, it is difficult for designers to select the most
effective and efficient ventilation method due to the different
usage of space, heat gains, pollutants and the dimensions of the
space. Unless detailed specifications of such parameters are given
at the design stage, unsatisfactory performance of the ventilation
system may be caused by insufficient information for designers. In
addition, the dynamic interactions between airflow distribution
and the action of the occupants are underestimated, e.g. the
Fig. 16. Typical supply air speed in different ventilation systems. movement of the occupants and the presence of heat sources at
In practice, it is difficult for designers to select the mosteffective and efficient ventilation method due to the differentusage of space, heat gains, pollutants and the dimensions of thespace. Unless detailed specifications of such parameters are givenat the design stage, unsatisfactory performance of the ventilationsystem may be caused by insufficient information for designers. Inaddition, the dynamic interactions between airflow distributionand the action of the occupants are underestimated, e.g. theFig. 16. Typical supply air speed in different ventilation systems. movement of the occupants and the presence of heat sources at
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