Sumujärjestelmät

Sumujärjestelmät, known in English as fog systems, are a type of fire suppression technology. They work by discharging a very fine mist of water or other extinguishing agent into the air. This mist is so small that it creates a dense fog that can quickly fill an area. The primary mechanism of suppression for water mist is cooling, as the fine droplets evaporate rapidly, absorbing a significant amount of heat from the fire. Secondary effects can include oxygen displacement, as the water vapor displaces air, and potentially some chemical inhibition of the combustion process depending on the specific agent used.

These systems are often used in areas where traditional sprinkler systems might cause excessive damage to sensitive equipment or historical artifacts. Applications include data centers, museums, archives, libraries, and engine rooms. The advantage of sumujärjestelmät is their ability to suppress fires with a much smaller volume of water compared to conventional sprinklers. This reduces water damage and the overall environmental impact.

The design and installation of sumujärjestelmät are complex and require specialized knowledge. They typically involve a high-pressure pump, a network of fine-nozzle piping, and a water storage tank. When a fire is detected, the system activates, rapidly discharging the fine mist. The effectiveness of these systems depends on factors such as the size of the area, the type of fire, and the design of the system itself.