Natural Circulation

Natural circulation refers to the movement of fluids, such as water or air, driven by natural forces like gravity and buoyancy, rather than by mechanical pumps or fans. In systems like heating or cooling, warmer fluids rise because they are lighter, while cooler fluids sink, creating a continuous flow. This process is often used in nature, like in rivers or the atmosphere, and in practical applications, such as in some heating systems or nuclear reactors. Natural circulation is efficient and reduces energy use, relying on the basic principles of thermodynamics and fluid dynamics.