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How much steam a 1000 kW steam boiler gives

The calculator converts the useful boiler heat output into steam flow depending on pressure and feed water temperature.

Parameters

Result

Approximate calculation using a simplified model: for designing equipment and process modes, consult a technologist.

Calculation example

What is known
Boiler power, kW
Boiler thermal power (useful)
1 000 kW
Steam pressure (gauge), bar
8
Feed water temperature
85 °C
Boiler efficiency on fuel
92 %
Steam
1 489 kg/h
Useful thermal power
1 000 kW
Fuel power
1 087 kW
Natural gas (approx.)
115,1 m³/h
Saturated steam temperature
175 °C
Feed water including blowdown
1,56 m³/h
Steam per 1 kW of power
1,49 kg/h

Frequently asked questions

Why does steam pressure affect the amount of steam?
Steam enthalpy rises with pressure so the same heat output gives slightly less steam.

The calculations are approximate: they help to assess the process and compare options, but do not replace a process design and trials on a specific raw material. This section is for reference only and contains no commercial offers.