Cooling Tower / Stack Effect / Natural Convection

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This video describes the working principle of cooling towers (natural draft wet cooling towers), which can be found at nuclear power stations. Natural draft wet cooling towers function according to the simple principle of the stack effect, also known as natural circulation. Since warm air is less dense than cold air, warm air rises due to buoyancy and escapes out of the upper opening of the tower. This leads to a self-preservation of the stack effect.