Abstract: An air distribution device. The air distribution device an air distribution chamber arranged to receive a flow of ventilation air from the air outlet. The air distribution chamber further having one or more perforated throttling plates or meshes perpendicular to the inner perforated wall and perpendicular to the flow of ventilation air from the air outlet into the air distribution chamber. The air distribution device also includes a pressure equalization chamber formed between an inner air permeable front plate of the air distribution chamber and an outer front plate. A perforation-free area of the outer perforated front plate is smaller than the perforation-free area of the inner perforated front plate in order to equalize ventilation air pressure in the equalization chamber and to provide a uniform flow of air through the outer front plate.

Abstract: An air distribution device. The air distribution device an air distribution chamber arranged to receive a flow of ventilation air from the air outlet. The air distribution chamber further having one or more perforated throttling plates or meshes perpendicular to the inner perforated wall and perpendicular to the flow of ventilation air from the air outlet into the air distribution chamber. The air distribution device also includes a pressure equalization chamber formed between an inner air permeable front plate of the air distribution chamber and an outer front plate. A perforation-free area of the outer perforated front plate is smaller than the perforation-free area of the inner perforated front plate in order to equalize ventilation air pressure in the equalization chamber and to provide a uniform flow of air through the outer front plate.

Abstract: The supply air unit (100) comprises a supply air chamber (10), at least one mixing chamber (20a, 20b), which opens into the air-conditioned room space, nozzles (60a, 60b), through which a fresh airflow (L1) is conducted from the supply air chamber (10) into the mixing chamber, a first heat-transfer unit (A), which comprises at least one heat exchanger (30a, 30b), through which a circulated airflow (L2) is conducted from the room space into the mixing chamber. The supply air unit also comprises a second heat-transfer unit (B), which is formed by at least one radiating element (50), which has a radiating surface (51), to which heat is transferred from the air-conditioned room space for cooling or from which heat is transferred into the air-conditioned room space for heating, and which radiating surface also comprises openings, whereby the radiating surface becomes sound-absorbing.