Ventilation in small utility buildings. Ventilatie in Kleine Utilitaire

A report on the first part of this investigation of the possibilities of natural ventilation in small utility buildings was presented in 1982. During that investigation it became clear that it was necessary to gather information regarding air-leaks from inside walls and inside doors. This information is required in order to be able to determine the magnitude of the mutual influence of the ventilation in one room on the ventilation in other rooms.

But it may also be important to know about the leakage of air from the inside walls in places where there are special requirements as regards the internal atmosphere, for example rooms in hospitals, or some computer rooms.

In the present investigation some 23 measurements were conducted on a number of partitions, inside doors and a brick-built inside wall. The measurements were made in four buildings, three in The Hague and one in Leidschendam. With the largest air-leaks that were measured in these four buildings, a strong mutual influence on the ventilation in the adjacent rooms is to be expected.

Opening a window in one room produces clearly noticeable results on the ventilation and current directions in the other rooms.

The air-leaks in these walls measured 0.0038 to 0.0068 m² per wall (38 to 68 cm²).

The total measured air-leak for a room is 0.0131 to 0.0529 m² (131 to 529 cm²)