Description

Displacement ventilation diffusers deliver air from the air conditioning system at a low velocity and close to the floor. The low-turbulent airflow creates a cloud of fresh air that covers the entire floor. Convection from people and other heat sources causes a cloud of fresh air to rise upward, thereby creating comfortable conditions in the work area.

This economical form of draft-free ventilation is also suitable for use in large open-plan spaces, such as auditoriums or retail areas, with diffusers installed at equal distances from each other.

Displacement ventilation is characterized by low air flow velocity and low turbulence. The air quality in the work area is very high.

Displacement ventilation with air supply close to the floor is suitable for cooling only. The maximum temperature difference between the supply air and the room is –6 K.

Displacement ventilation diffusers of the QLV series, in combination with an equalizer and a flow straightener, ensure an even supply of air over the entire surface of the diffuser. The perforated faceplate helps further even out the airflow. Air supply in three (90°) or five (180°) directions.

With displacement ventilation, i.e. air is supplied near the floor; exhaust devices should be installed in the upper part of the room, above the work area.

Standard sizes from 160 × 500 to 630 × 1750 mm

Min. air flow level at 0.1 m/s 17 – 305 l/s or 62 – 1098 m³/h

Max. air flow level at 0.3 m/s 52 – 915 l/s or 185 – 3295 m³/h

Temperature difference between supply air and room –6 to –1 K

Sound power level at 0.3 m/s 43 dB(A) max.