page_title: Air door
section_title: Uses
hierarchical_section_title: Air door / Uses
caption_attribution_description: English: Architectural High Performance 10 Air Curtain over entrance to airport
context_page_description: An air door or air curtain is a device used to prevent air or contaminants from moving from one open space to another. The most common use is a downward-facing blower fan mounted over an entrance to a building, or an opening between two spaces conditioned at different temperatures.
context_section_description: Air doors are often used where doors are required to stay open for operational purposes, such as at loading docks and vehicle entrances. They can be used to help keep flying insects out by creating forceful turbulence, or help keep out outside air, thus reducing infiltration through the opening. Cold drafts can be avoided by mixing in warm air heated by the air door. Heated air doors are commonly used when supplemental heat is needed for a space, and to reduce the wind chill factor inside the opening, in colder climates.
  Further applications include customer entryways, airplane hangars, cargo doors, drive through windows, restaurant doors, or shipping receiving doors. Non-heated air curtains are often used in conjunction with cold storage and refrigerated rooms.
  Air doors can be equipped with or without heaters to heat the air. The fan must be powerful enough to generate a jet of air that can reach the floor. There are some studies in the scientific literature that present analytical methods to predict the sealing efficiency obtained with an air curtain.
caption: Architectural air curtains at the airport entrance
exif: {"Image ImageDescription": "OLYMPUS DIGITAL CAMERA", "Image Make": "OLYMPUS IMAGING CORP.", "Image Model": "u1010,S1010", "Image XResolution": "240", "Image YResolution": "240", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Lightroom CC 2.0.2 (Windows)", "Image DateTime": "2018:11:09 13:47:10", "Image ExifOffset": "252", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "802", "Thumbnail JPEGInterchangeFormatLength": "14166", "EXIF ExposureTime": "1/30", "EXIF FNumber": "7/2", "EXIF ExposureProgram": "Program Creative", "EXIF ISOSpeedRatings": "400", "EXIF ExifVersion": "0230", "EXIF DateTimeOriginal": "2009:12:01 00:27:55", "EXIF DateTimeDigitized": "2009:12:01 00:27:55", "EXIF ShutterSpeedValue": "4906891/1000000", "EXIF ApertureValue": "361471/100000", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "86/25", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash fired, auto mode", "EXIF FocalLength": "33/5", "EXIF ColorSpace": "sRGB", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF FocalLengthIn35mmFilm": "37", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "High gain up", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal", "EXIF BodySerialNumber": "F42588671"}