Thermosiphon effect

The thermosiphon effect is a natural fluid movement caused by temperature differences within a fluid, typically water. When part of the fluid is heated, it becomes lighter and rises, while the cooler, denser fluid sinks. This creates a continuous circulation, allowing heat to be transferred efficiently. This principle is commonly used in systems like solar water heaters and some heating systems, where hot water rises to the top and cooler water is drawn from below, helping maintain a steady temperature without the need for pumps.