Circular air diffuser QLV

squareductmetal

Polygon displacement flow diffusers Spigot diameter 160 – 630 mm, nominal height 500 – 1750 mm Perforated plate, square pitch Circular duct connection Duct connection at the top or bottom Integral airflow straightener and conical equalising element Wall mount Damper blade for volume flow rate balancing Exposed surface in RAL CLASSIC colours Displacement flow diffusers discharge the air from air conditioning systems with a low velocity and near the floor. The low-turbulence airflow creates a pool of fresh air that covers the entire floor area. The convection from people and other heat sources causes the fresh air from the pool to rise and create comfortable conditions in the occupied zone. This draught-free and economical type of ventilation is also suitable for large internal spaces, such as auditoriums or shop floors, with several regularly arranged units. Displacement ventilation is characterised by low airflow velocities and low turbulence. The air quality in the occupied zone is very high. Displacement ventilation with air discharge near the floor is suitable only for cooling. The maximum supply air to room air temperature difference is –6 K. Type QLV displacement flow diffusers include an equalising element and air straightener that ensure a uniform air distribution across the entire diffuser area. The perforated sheet metal diffuser face helps to equalise the airflow further. Three-way (90°) or five-way (180°) air discharge. With displacement ventilation, i.e. air discharge near the floor, extract air units should be installed in the upper part of a room, above the occupied zone.