In large steam boiler plants, what type of tank is now necessary for accommodating changes in condensate flow?

In large steam boiler plants, a surge tank is essential for accommodating changes in condensate flow. The primary function of a surge tank is to provide a buffer capacity that accommodates fluctuations in the condensate return flow, which can occur due to variations in steam demand or operational changes of the boiler system. This tank helps to stabilize the system by absorbing sudden surges in flow and ensuring that the condensate can flow smoothly back to the boiler without causing pressure changes or spillage.

Surge tanks can also help prevent water hammer, which can occur when there are abrupt changes in flow rates, thereby enhancing the reliability and efficiency of the steam system. By maintaining a consistent level of water within the system, the surge tank optimizes the operation of the boiler.

While storage tanks, expansion tanks, and pressure vessels serve important roles in a steam system, they do not specifically address the need to manage immediate fluctuations in condensate flow as effectively as a surge tank does. Storage tanks are primarily used for holding excess water or condensate, expansion tanks accommodate changes in fluid volume due to temperature fluctuations, and pressure vessels are designed to hold gases or liquids at a pressure substantially different from the ambient pressure. Therefore, the surge tank is the appropriate choice for managing the dynamic nature of