Air Curtain installation types
A key aspect for the correct design of an Air Curtain unit is the building situation. Depending on whether there is positive or negative pressure inside the building, two different types of Air Curtain installation are used: IDW (internal rotating air roll) or ADW (external rotating air roll) installation.
Within these two installation types, different device variants offer the possibility of achieving optimum shielding in the respective building situation.
Internally rotating air roll (IDW)
Air is drawn in from the direction of the room and blown out directly above the door. An air roll is formed, which direction of rotation is directed into the room. IDW installation of an Air Curtain system is generally the most energy-efficient type of installation. Preferred area of application: For equalised pressure or overpressure in the building and for small and medium-sized buildings where no permanent workstations are located in the door area.
For equalised pressure or overpressure in the building
For moderate and medium wind loads
In closed shop rows with a more wind-protected location or with a vestibule
External rotating air roller (ADW)
The air intake is above the door and the air discharge nozzle is on the room side. An air roll is formed whose direction of rotation is outwards, against the incoming cold air. This significantly increases the shielding performance. The air movements in the inlet area are reduced. Due to the lower temperatures in the intake area, the heating output is higher than with the IDW installation variant. A frost protection thermostat must be provided for ADW installation. Preferred area of application: With negative pressure in the building.
For pressure equalisation and negative pressure (e.g. several floors)
With regular wind loads or other unfavourable building situations
Numerous housing types
Depending on the building situation or customer requirements, Air Curtain units are produced in various housing types and designs; e.g. wall or ceiling installation in the visible area, suspended ceiling installation with visible underside, with internally or externally rotating air roll, integration into a suspended ceiling or many other options.
Housing type S
Horizontal installation in the visible area, intake area at the front.
Housing type U
For visible or suspended ceiling installation, with visible underside of appliance, intake area at the bottom. Optionally available with ceiling installation frame.
Housing type UDB
Suspended ceiling installation, flush with ceiling, intake area below. Entire underside of appliance visible.
Housing type Z
Suspended ceiling installation, intake area below, only intake and discharge openings visible.
Housing type R
Slim design for horizontal or vertical installation in the visible area, intake area at the rear.
Vertical installation
Standing appliances, primarily arranged in conjunction with automatic sliding doors.
The combination of two Air Curtain units protects the building almost 100% against outside and cold air ingress, while at the same time reducing thermal energy by 30 to 40% compared to the conventional use of just one Air Curtain unit.
The optimum situation: vestibules with Air Curtain systems
Uncontrolled air currents prevail at building entrances with high frequency. In addition, there is wind pressure from outside, thermal buoyancy and pressure changes caused by air conditioning and ventilation systems in the building.
Double door systems are often used as vestibules, but are only effective if both doors are alternately closed. In practice, the effect is lost if the door opening intervals are too long or the installation depth of the vestibules is too small. The result is doors that are open on both sides. This results in unpleasant draughts with high operating costs due to the immense amount of cold air entering the building.
To ensure the function of a vestibule even when doors are open on both sides and to prevent cold air from entering the vestibule, Teddington offers the optimum solution with a combination of one ambient and one warm Air Curtain unit.
Even the cold air roller on the outer door, which protects the entrance area against wind load, significantly reduces the incidence of cold air. The downstream warm air roller, which counteracts the residual air entering the building, also conditions the air and prevents unpleasant draughts. The interaction of the two air rollers provides first-class protection for the building.
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- Air Discharge System: CONVERGO® pressure chamber nozzle system
- Air Discharge Range:
- Mounting position:
- Area of application:
- Shape:
- Heating type:
- Sound insulation:
- Unit Length: Unit length made to measure
- Fan technology: AC