Power
When making approximate calculations, the following nuances must be taken into account:
whether the curtain will additionally work to heat the room or its task is only to cut off external air flows. It should be noted that you should not consider an electric thermal curtain as a full-fledged heating device. In this case, the excess thermal power of the structure will lead not only to significant material costs, but can also philippines mobile database a source of unwanted drafts;
the curtain is planned to be switched on occasionally, or to operate with the opening constantly open. In the latter case, up to 70% of the power will be lost;
the presence of a protective vestibule, automatically opening doors, and several entrances in the premises.
In general, in a capital building, the calculations of the need for 1 kW of power for every 10 m2 of space are roughly based on this. When installing air curtains in refrigeration and freezing chambers, models without a heating function are used.
Horizontal curtains are more traditional, installed above the opening, with the air flow directed downwards. Their use is limited, as currently standard models are capable of covering an opening height of 2-2.5 meters, and non-standard equipment is too expensive.
Vertical curtains provide more room for maneuver. Industrial air curtains for warehouses most often have a vertical design. In this case, the curtain is installed on the side of the door or gate so that the air flows cross each other, providing the necessary result. When considering the model range, it is necessary to pay attention to the fact that horizontal and vertical modifications are not interchangeable among all manufacturers, having significant differences in the layout.
Sizes and prices
The price of an air curtain depends on the size of the installation in the most global way. Air openings are divided into several subtypes according to their dimensions: