This video explains what cupolas look like and their operation methods.

Cupolas help to eliminate the humid and hot air that can accumulate in a huge space. Cupolas are often found in barns and massive old buildings. The construction of a cupola is an effective way to naturally vent a space. The powerful winds surrounding the cupola push warm air in an area towards openings. Air moving is more dense than static air. This causes negative pressure which pushes air upwards and then out.

A cupola can be compared to chimneys. Instead of exuding heat and smoke, the cupola lets the hot air inside escape through openings. They may also have louvers which allow air to constantly be let out. One disadvantage of this kind of opening is that is opens up to cold and damp air in winter months. Window openings work better. The windows can be shut during winter to maintain warmer air in the structure. The information you have learned about cupolas.

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