Plant engineering calculator · Updated 17 September 2026
Deaerator Steam Consumption Calculator — Heat Balance & Steam Demand
Estimate deaerator heating-steam demand from feedwater flow and inlet/outlet enthalpy using a transparent steady-state energy balance.
Inputs
Live results
- Heating steam 2.8632479 t/h
- Steam/feedwater ratio 14.316239%
- Heating duty 1,861.1111 kW
Formula
mₛ=mw(hout−hin)/(hsteam−hout).
Worked example
20 t/h feedwater heated from 105 to 440 kJ/kg with 2,780 kJ/kg steam needs about 2.86 t/h steam.
Assumptions and limits
- Use validated enthalpies for actual pressure and temperature.
- Venting and radiation losses are excluded unless included in a design margin.
FAQs
What does this Deaerator Steam Consumption Calculator calculate?
Estimate deaerator heating-steam demand from feedwater flow and inlet/outlet enthalpy using a transparent steady-state energy balance.
What should I verify before final design?
Verify measured operating data, fluid properties, equipment curves, safety margins and the applicable OEM or engineering standard.
Why are intermediate results shown?
They expose assumptions and make unit, load and operating-condition errors easier to catch.