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Express doors are automatic sliding or rolling doors that open and close quickly to maintain the climate in enclosed areas and reduce heat flow between two areas. They are commonly used in industrial or commercial settings and can minimize temperature fluctuations. Safety is a major concern, and they are typically installed with multiple security systems.
An express door is a type of automatic sliding or rolling door designed to open and close very quickly. The purpose of this type of door is to maintain the climate in closed rooms by preventing excessive heat dispersion in both directions. Such doors are most widely used in industrial or commercial settings with high levels of traffic entering and leaving a particular enclosed area, such as a warehouse. An express door opens and closes quickly to minimize the amount of heat that can escape or enter the cabinet, thus keeping heating and cooling costs as low as possible. They can also be used to ensure that airborne pathogens cannot spread easily between areas, although this is not such a common problem.
The most common reason for installing a high speed door is to reduce the heat flow between two areas. A normal door can remain open for several seconds each time an individual passes through it, allowing much heat to flow from one area to another. This can be costly if flowing from a heated enclosure into the cold outdoors, as more energy and, therefore, money must be invested in keeping the heated area warm. A high-speed door can help ensure that the door doesn’t stay open much longer than the time it takes for an individual to walk through it.
Their ability to minimize heat loss into or out of an enclosure makes high-speed doors particularly valuable in temperature-controlled areas. Some warehouses, workshops and shops have areas that need to be kept above or below a certain temperature. A substantial deviation from the required temperature can cause damage to products, samples or other materials. A high speed door can minimize potential temperature fluctuations by ensuring that exposure of the temperature controlled cabinet to uncontrolled outside temperatures is kept to an absolute minimum.
Safety is a major concern for those attempting to install and use high-speed doors, as a high-speed door can be quite heavy and tends to close fast enough to seriously injure anyone in its path. Therefore, this type of door is typically installed with two or more highly sensitive and redundant security systems. The door usually opens due to a pressure or optical sensor and does not close until an individual has left the sensor area. Also, most systems have pressure sensors built into the doors, so if the door itself hits something when it’s closing, it will immediately stop and reopen.
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