What is the biggest benefit of revolving doors ?

Revolving doors allow for better control of the interior environment when compared to regular sliding door or hinged door / swing door. In colder climates, the difference between indoor and outdoor can be very big. Opening a hinged or sliding door even for a brief period will let out a tremendous amount of heat, which will increase heating cost for the entire building. With a revolving door, this doesn't happen as there is never a point where the air can flow freely between the conditioned (inside) and unconditioned space (outside). The reverse should be true in hot climates, where the goal is to keep in the cooled air.

To the current buildings, the entrance area become more bigger campared with before, you can see most morden buildings have a very large internal open space including the one which I worked in. I have been in this building during many cold winter days. The building has revolving doors and a couple sliding doors. The sliding doors are normally only intended for disabled or impaired users who may find using the regular revolving doors difficult or impossible. Every time someone uses one of the sliding doors and there is a direct opening of cold winter air outside into the space inside, the sensation of air movement and heat loss is incredible. You can be standing 15 meters away across the atrium and you will feel the gush of air flowing by.

One of the biggest features of the revolving door is the energy saving , after our calculation, about the Environmental Energy Consumption between Sliding Door and Revolving Door, the former is over 3 times that of the latter .

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