Science & Environment
Boiler Blowdown Rate from TDS Calculator
Calculate required boiler blowdown rate to keep feedwater TDS or silica within limits.
Your inputs
Change any value to update the result instantly.
Blowdown rate
84.7 lb/hr
Blowdown percentage
1.69 %
Feedwater rate
5,000 lb/hr
Boiler TDS limit
3,000 ppm
Formula and working
Blowdown % = Feedwater TDS ÷ (Boiler TDS limit − Feedwater TDS) × 100
- 1
Collect the inputs
Feedwater rate = 5,000 lb/hr; Feedwater TDS = 50 ppm; Boiler TDS limit = 3,000 ppm
- 2
Apply the formula
Blowdown % = Feedwater TDS ÷ (Boiler TDS limit − Feedwater TDS) × 100
- 3
Result
Blowdown rate = 84.7 lb/hr
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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