Is there any information to show which way the draught would have blown ? Was there a prevailing wind in any direction, for example?
Which side of the apartment was the wind blowing from?
There was very little protection against the wind blowing in the children's bedroom as it was facing straight onto the car park and main road with no wind deflection.
it is important to determine the airflow pattern around the house, following the principles of aerodynamics, and to orient the inlet appropriately in the airflow. Generally, a building placed in the wind will create a zone of compression to the windward side and a low-pressure zone to the leeward side. This low-pressure zone continues a certain distance beyond the building, depending on the wind velocity. The faster the wind velocity, the shorter the low-pressure zone extends, because of eddies created on the leeward side which disrupt the smooth airflow pattern. For normal wind velocities, the length of the low-pressure zone can be taken to be five times the height of the building.