AIVC - Air Infiltration and Ventilation Centre

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air change rate

The effect of Various Inlet Conditions on the Flow Pattern in Ventilated Rooms - Measurements and Computations.

A test room which was built at a scale 1:5 to the original one has been used to investigate air-conditioned rooms. The original room was specified by the international project IEA ANNEX 20. A lot of experiments were made on different inlet geometries and air change rates. Velocities and turbulent quantities were measured not only in the inlet plan but also in the room itselfby means of hot wire anemometry. The ammonia absorption method according to Kruckels has been applied to determine the heat transfer coefficients at the walls. Qualitative results were obtained by laser light sheets.

Tracer gas mixing with air.