Which type of tank holds blowdown water until it cools for safe discharge?

A blowdown tank is specifically designed to hold blowdown water from a boiler system until it cools down to a safe temperature for discharge. This process is critical because blowdown water can be hot and contain concentrated impurities from the boiler system. By using a blowdown tank, operators can ensure that the temperature and any potential contaminants in the water are managed safely before releasing it into the environment or a waste treatment system.

The feedwater tank, in contrast, is primarily used for storing water that will be introduced into the boiler, ensuring there is a sufficient supply of water to maintain operation. A surge tank is utilized in fluid handling systems to absorb sudden changes in pressure and flow, acting as a buffer. An expansion tank is designed to accommodate the expansion of water as it heats up and allows for the safe transfer of heat energy in the system.

Understanding these different tank types is essential for managing safety and efficiency in boiler operations.