Boiler / Steam Duty Calculator
Static · formula-only · worked example computed when this page was built · no live data
The Boiler / Steam Duty Calculator finds the boiler heat duty (kW and boiler HP) from steam pressure, flow, and feedwater temperature. Example: for 1 kg/s of saturated steam at 10 bar from 80 °C feedwater, Boiler duty = 2441.32 kW, Boiler HP = 248.9 BHP, Saturation temp = 179.9 °C (per ASME BPVC Sec.I/IV | ASME B31.1 | ASME PTC 4 | IAPWS-IF97 | RA 8407 (PH)).
How it works
Computed from your inputs per ASME BPVC Sec.I/IV | ASME B31.1 | ASME PTC 4 | IAPWS-IF97 | RA 8407 (PH). Anything the worked example does not state uses this calculator's standard default; the interactive version shows every input and lets you change it.
Worked example (Boiler & Utilities)
Inputs: 1 kg/s of saturated steam at 10 bar from 80 °C feedwater.
| Result | Value |
|---|---|
| Boiler duty | 2441.32 kW |
| Boiler HP | 248.9 BHP |
| Saturation temp | 179.9 °C |
Computed by WorkHive's calculation engine when this page was built; standard: ASME BPVC Sec.I/IV | ASME B31.1 | ASME PTC 4 | IAPWS-IF97 | RA 8407 (PH).
How to use this calculator
- Read the worked example. It uses 1 kg/s of saturated steam at 10 bar from 80 °C feedwater and shows every number in the method.
- Follow the formula with your own figures: it returns Boiler duty, Boiler HP, Saturation temp, computed per ASME BPVC Section I.
- To compute interactively, open the Boiler / Steam Duty Calculator inside WorkHive's free Engineering Design suite (link below). It runs the same method with your inputs.
FAQ
What is a boiler steam duty calculator kW BHP?
The Boiler / Steam Duty Calculator is a free online tool that finds the boiler heat duty (kW and boiler HP) from steam pressure, flow, and feedwater temperature. It shows the formula and a fully worked example so you can check the method, not just the number.
How is it calculated?
The result is computed from your inputs following ASME BPVC Section I. The worked example on this page shows a real computation with real numbers.
Is the calculator free?
Yes. WorkHive is free: this worked example is open to everyone, and the interactive calculator runs inside the free Engineering Design suite after a free sign-up (your work is saved to your account). WorkHive is a free, offline-first maintenance platform built for Philippine industrial plants.
Run it on your own numbers
Open the interactive Boiler / Steam Duty Calculator in WorkHive. Free, and a free sign-up saves your calculations, BOMs and scope-of-works to your account.