Prediction of thermal comfort in a room with a cold air diffusion supply unit.

Indoor air flow induced by a fan-coil unit in an air-conditioned environmental chamber is studied experimentally. The supply Archimedes number which is a macroscopic number describing indoor air flow is measured and related to the
centreline velocity and temperature decay of the cold air jet issued from the fan-coil unit. The space air diffusion and the thermal comfort using respectively the Air Diffusion Performance Index (ADP]) and the Predicted Percentage of  dissatisfied (PPD) are evaluated. Evolution of these indices with the supply Archimedes number is discussed.