What are the benefits of revolving doors?

Answer by Isaac Gaetz:

Revolving doors allow for better control of the interior environment when compared to regular sliding or hinged doors. In colder climates, the difference can be very large. Opening a hinged or sliding door even for a brief period will let out a tremendous amount of heat; increasing heating costs 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.

Here are some images of a building near my office. This is the Thompson center in Chicago, Illinois. As you can see it has a very large internal open space. 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 200 feet away across the atrium and you will feel the gush of air flowing by.

What are the benefits of revolving doors?

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