Steam Boiler Calculator

Total Dissolved Solids (TDS) and Oxygen Contents Calculator  

You can also fill the online forms here:

• General Boiler Details
• Boiler House Record

Compare Actual with Ideal

1. Input Boiler details
2. Adjust Load % to suit operating conditions
3. Input actual hourly feedwater temperature
4. Input pump settings for the oxygen scavenger
5. Click on the Recalculate bar

Compare the results:

• If you are under dosing oxygen treatment your boiler is at risk.
• Overdosing increases TDS blowdown wasting fuel and money.

Boiler Pressure Bar (G) : Boiler Max Evaporation Rate : Feed TDS (mg/l) : Boiler Target TDS (see BS2486) (mg/l) : Historical TDS(from records) (mg/l) : Boiler Capacity (Litres) : Cost of Fuel per Unit : Calorific Value of Fuel (MJ/Unit) : Operational Days per year : Boiler Efficiency : (Calorific Value is per unit eg. Gas = 39MJ/M3, HFO = 43MJ/Kg) Boiler Load vs Time     01   01   01   01   01   01   20   50   70   80   80   80   80   80   80   80   70   30   20   01   01   01   01   01  0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Time, Hr Load, % Feed Temperature, °C Feedwater Temperature vs Time     95   95   95   95   95   95   90   90   85   85   80   80   80   80   80   80   85   85   85   90   95   95   95   95  0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Oxygen Control Pump Data Oxygen Scav pump stroke rate : Oxygen Scav pump stroke length : Oxygen Scav pump max discharge l/hr : Oxygen Scav max. pump rate : Oxygen Scav concentration Ideal Blowdown 6.1% Ideal B/down/day 5361.3 Kg Historic Blowdown 8.7% Historic B/down/day 7914.3 Kg Excess B/down 2189.7 Kg     Fuel loss/DAY in excess B/Down = 43.9 Units     Fuel loss/YEAR in excess B/Down = 8776.3 Units     Fuel COST/YEAR in excess B/Down = £2632.9 O2 dissolved in feed water 221.8 gms/day Ox Scav required = 17741.6 gms     Excess Oxygen Scavenger dosed/Year = -2908.3 L     UNDER DOSING OXYGEN SCAVENGER   Actual Dosed = 3200.0 gms/day Potential Metal loss/DAY = 424.1 gms     Potential Metal loss/YEAR = 84.8 Kg Hourly Oxygen Scavenger Analysis – Blue (Left) Dosed (Pump settings), Red (Right) calculated requirement from Feed & Boiler Conditions    0.13 0.01 0.13 0.01 0.13 0.01 0.13 0.01 0.13 0.01 0.13 0.01 0.13 0.27 0.13 0.68 0.13 1.34 0.13 1.54 0.13 1.92 0.13 1.92 0.13 1.92 0.13 1.92 0.13 1.92 0.13 1.92 0.13 1.34 0.13 0.58 0.13 0.38 0.13 0.01 0.13 0.01 0.13 0.01 0.13 0.01 0.13 0.01 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Show/hide fullsize diagram