The specific value of different flows resulting from air exchanges between rooms or with the outside is not always important. An extensive model is not suitable when only estimations or tendencies have to be drawn (very time consuming). So we developed a simplified infiltration model for predicting airflows in single rooms and between different zones of a building. We integrated this model into a building transient thermal simulation program set up to a micro-computer system. So as to obtain this model, we used simplified assumptions.
Comfort in an air-conditioned room depends to a high degree on the prevailing movement of air. As air velocities in excess of 0.1 m/sec can be regarded as draft phenomenon, a measuring device has been developed which will facilitate measurement to a sufficient accuracy and independent of any fluctuations in the air temperature even with low velocities.
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