SPECIFICATION SHEET • SI METRIC
CAT: THERMO
Boiler Blowdown Rate
Estimate continuous boiler blowdown flow, blowdown percentage, and required feedwater from steam production and cycles of concentration.
OPERATING LIMITS — Boiler-water mass-balance calculation only; verify cycles definition, chemistry limits, intermittent versus continuous blowdown, condensate return, heat recovery, and operating procedures.
INPUT DESIGN PARAMETERS (SI)
kg/h
cycles
CALCULATED SPECIFICATION OUTPUT
Continuous Blowdown Rate
555.6 kg/h
| Blowdown as Percent of Steam | 11.11 % |
| Approximate Feedwater Rate | 5555.6 kg/h |
Technical Methodology & Engineering Principles
GOVERNING EQUATION
Blowdown fraction = 1 / (cycles − 1); blowdown flow = steam production × blowdown fraction; feedwater = steam + blowdown.
Assumptions & Scope
Steady-state mass balance with cycles defined as boiler-water concentration divided by feedwater concentration. Include surface blowdown, bottom blowdown, intermittent schedules, condensate return, and heat recovery separately.
Operating Range & Boundary
Use finite, physically meaningful inputs within the stated operating assumptions.