What is a disadvantage of using a timer-controlled blowdown system?

A timer-controlled blowdown system is designed to periodically discharge a portion of water from a steam boiler to control concentration levels of impurities. One key disadvantage is that it does not adapt to variations in the feedwater quality. This means that regardless of how clean or contaminated the feedwater is, the system will perform blowdowns based solely on preset intervals.

If the feedwater quality changes, such as fluctuations in mineral content or other contaminants, the timer-controlled system may either waste water by conducting blowdowns too frequently or fail to perform them adequately, allowing impurities to accumulate. As a result, relying on a timer does not provide the flexibility needed to respond dynamically to real-time water conditions, which is essential for maintaining optimal boiler efficiency and ensuring the longevity of the system.