Plant optimization calculator · Updated 17 September 2026
Condensate Energy Recovery Calculator — Return Heat, Fuel Value & Annual Savings
Estimate sensible heat returned with hot condensate relative to makeup water, then convert it into boiler-fuel equivalent and annual monetary value.
Inputs
Live results
- Check positive flow, temperature rise, efficiency and heating value
Formula
Q=ṁCp(Tcond−Tmakeup); fuel equivalent=Q/(η×HV).
Worked example
5 t/h condensate returned at 90°C instead of 25°C carries about 378 kW sensible heat.
Assumptions and limits
- Uses liquid-water Cp≈4.186 kJ/kg·K.
- Flash-steam recovery and water-treatment savings are separate benefits.
FAQs
What does this Condensate Energy Recovery Calculator calculate?
Estimate sensible heat returned with hot condensate relative to makeup water, then convert it into boiler-fuel equivalent and annual monetary value.
Can I use this for a final design?
Use it for screening, diagnostics and opportunity sizing. Validate final design against measured plant data, OEM limits and applicable standards.
Why does the calculator show intermediate results?
Intermediate engineering quantities make bad inputs and unrealistic assumptions easier to spot before a decision is made.