Engineering calculator · Updated 17 September 2026
Steam Header Diversity Calculator — Coincident Peak & Diversity Factor
Size a steam-header screening load from connected branch peaks and a diversity/coincidence factor. Returns connected load, diversified peak, spare capacity and utilization.
Inputs
Live results
- Connected peak 20,000 kg/h
- Diversified peak 15,000 kg/h
- Diversity reduction 5,000 kg/h
- Header spare capacity 3,000 kg/h
- Header utilization 83.333333%
Formula
Diversified peak=Σbranch peaks×coincidence factor.
Worked example
20 t/h connected load at 75% coincidence gives a 15 t/h diversified peak.
Assumptions and limits
- Use a defensible coincidence factor from operating history or process sequencing.
- Critical simultaneous users may need separate treatment instead of one global factor.
FAQs
What does this Steam Header Diversity Calculator calculate?
Size a steam-header screening load from connected branch peaks and a diversity/coincidence factor. Returns connected load, diversified peak, spare capacity and utilization.
Is this suitable for final equipment selection?
Use the result for engineering screening and operating diagnostics. Confirm final selections against measured data, OEM curves and applicable codes.
Why are the assumptions explicit?
Plant results depend on reference conditions, pressure basis, efficiencies and measurement locations. Showing assumptions keeps the calculation auditable.