paisutusmahuteid

Paisutusmahuteid, often translated as expansion vessels or expansion tanks, are essential components in closed-loop heating and cooling systems. Their primary function is to absorb the expansion and contraction of water that occurs as it heats and cools. When water is heated, its volume increases. In a sealed system, this increased volume would lead to a dangerous rise in pressure. A paisutusmahuti provides a space for this excess water volume to go, thereby preventing over-pressurization. Conversely, when the system cools and the water contracts, the paisutusmahuti releases stored water back into the system, maintaining a minimum operating pressure and preventing air from entering.

The typical paisutusmahuti consists of a steel tank divided into two sections by a flexible diaphragm or bladder. One side of the tank is connected to the heating or cooling system, containing the water. The other side is pre-charged with air or an inert gas at a specific pressure. As system water expands, it pushes against the diaphragm, compressing the air/gas on the other side and absorbing the increased volume. When the system water contracts, the compressed air/gas expands, pushing the diaphragm back and forcing water into the system. This buffering action is crucial for the longevity and efficient operation of the system, protecting components from damage due to pressure fluctuations and ensuring consistent performance. Regular checks of the pre-charge pressure are important for optimal functioning.