How Boiler Blowdown Rate Calculator Works
Estimate boiler blowdown percentage from feedwater and boiler-water dissolved-solids limits. The calculation runs locally in your browser, so values entered into this calculator are not sent to a server by the calculator.
Blowdown fraction ≈ feedwater TDS ÷ boiler-water TDS limit. This simplified balance assumes steady state.
How to use it
- Enter verified values using the units shown.
- Calculate the result and compare alternative assumptions where useful.
- For engineering, commercial or safety-critical decisions, verify the result against applicable standards, manufacturer data and professional review.
Common mistakes
- Mixing units or entering dimensions in the wrong unit.
- Using a nominal value when equipment-specific data is available.
- Treating an estimate as a final design, compliance or safety approval.
Limitations
Use plant water chemistry and boiler-maker guidance for operating decisions. Real-world results can also be affected by tolerances, installation conditions, environmental factors, material properties and applicable standards.