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How much steam a 500 kW boiler produces

A boiler with a useful power of 500 kW at 8 bar and feed water at 80 °C produces about 740 kg of steam per hour. The calculator also shows gas consumption taking efficiency into account.

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)
500 kW
Steam pressure (gauge), bar
8
Feed water temperature
80 °C
Boiler efficiency on fuel
92 %
Steam
738 kg/h
Useful thermal power
500 kW
Fuel power
543 kW
Natural gas (approx.)
57,5 m³/h
Saturated steam temperature
175 °C
Feed water including blowdown
0,77 m³/h
Steam per 1 kW of power
1,48 kg/h

Frequently asked questions

How much steam does 1 kW of power give?
About 1.4–1.6 kg of steam per hour per kW at 6–10 bar and feed water of 60–90 °C.

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.