Boiler Capacity Calculator

Calculate boiler capacity requirements for steam and hot-water systems

System Configuration
Select steam for process heating, hot water for space heating
bar
Low pressure: 1-10 bar, Medium pressure: 10-40 bar
%
Gas boilers: 80-90%, Oil boilers: 80-88%, Electric: 95-99%
Load Requirements
kW
Varies based on industrial process requirements
kW
Domestic hot water demand for facilities
kW
Space heating requirements for buildings
Adjustment Factors
%
Typically 5-15% for well-insulated systems
%
Typically 10-20% for rapid heating requirements
%
Typically 3-8% for steam systems
%
Typically 10-20% for design safety
Economic Parameters
Select based on availability and cost
₹ /kWh
Natural gas: ₹6-9/kWh, Diesel: ₹9-12/kWh
hours/day
Commercial: 8-12 hours, Industrial: 16-24 hours
Calculation Results
Total Load

0 kW

Before adjustments

Required Capacity

0 kW

After adjustments

Steam Flow

0 kg/h

Boiler Horsepower

0 BHP

Required Capacity

0 TR

Fuel Consumption

0 kW

Annual Fuel Cost

₹0

Equipment Recommendations

Complete the calculation to see recommendations.

Calculation Steps
The calculation steps will appear here after calculation.
Saturation Properties
Saturation Temperature -
Enthalpy of Evaporation -
Specific Volume -
Pipeline Sizing Calculator
m/s
Steam: 20-30 m/s, Water: 1-3 m/s
mm
Based on flow rate and velocity
Export Results
Formulas Reference
Total Load

Process + DHW + Heating loads

Required Capacity

Total Load × (1 + Losses% + Pickup% + Blowdown% + Safety Margin%)

Steam Flow

Required Capacity / Enthalpy of Evaporation

Boiler Horsepower

Required Capacity / 33,475 BTU/h (or 9.81 kW)

Tons of Refrigeration (TR)

Required Capacity (kW) / 3.5169

Pipe Diameter

√(4 × Flow Rate / (π × Velocity))