1. Recovers Waste Heat from Flue GasesBoilers generate high-temperature flue gases (typically 300–500°C) as a byproduct of fuel combustion. Without an economizer, these gases would exit the chimney, losing significant heat to the atmosphere.The economizer intercepts these flue gases and transfers th

Typical Applications of Bare Pipe Tube Bundle Coal Economizer

Economizer for Steam BoilerAn economizer for a steam boiler is a crucial auxiliary component designed to enhance the boiler's thermal efficiency by preheating the feedwater using the heat from the boiler's exhaust gases. Primary Functions of an EconomizerHeat Recovery: Extracts waste heat from flue

Design Considerations of Bare Tube Low Pressure Boiler EconomizerPressure and Temperature ConstraintsLower Pressure: Operates with feedwater pressures typically <2.5 MPa (vs. high-pressure economizers at 10–15 MPa), matching the low-pressure feedwater circuit (e.g., preheating condensate or deaerato

Advantages of Bare Tube Low Pressure Boiler EconomizerHeat Transfer PerformanceModerate Efficiency: Bare tubes have lower heat transfer coefficients (typically 30–60 W/(m²·K) for flue gas-side) compared to finned tubes (80–150 W/(m²·K)), but this is acceptable in low-temperature, low-heat-flux zones