About Engineering Suite B2B
Last updated: September 6, 2026
Engineering Suite B2B is an independent collection of 28 browser-based engineering calculators covering thermodynamics, unit operations and fluid mechanics. It exists because practising engineers and students repeatedly rebuild the same spreadsheets: an LMTD correction factor, a Swamee–Jain friction factor, a Rankine cycle balance, a metacentric height. This Site keeps those calculations in one indexed place, with the assumptions stated and a printable calculation record at the end.
What the suite covers
| Family | Modules | Scope |
|---|---|---|
| Thermodynamics Çengel & Boles | 13 | Property interpolation, equations of state, closed systems and control volumes, second law and exergy, gas and vapour power cycles, refrigeration, psychrometrics, combustion, chemical equilibrium and compressible flow. |
| Unit operations McCabe, Smith & Harriott | 4 | Fluid mechanics, heat transfer and exchanger sizing, mass transfer and separation, mechanical operations and solids handling. |
| Fluid mechanics Mott | 11 | Viscosity conversion, manometry, hydrostatic force, buoyancy and stability, pipes in series and parallel, pump selection, open channels, jet impact, drag and lift, HVAC duct sizing. |
How the calculators are built
- Everything runs in your browser. There is no server-side computation, no account, and no upload. Your input values never leave your device.
- Methods are stated, not hidden. Every module documents the governing equations, the correlation used, and the range in which that correlation is valid.
- Both unit systems. Each module works in SI and USCS, and conversions are applied consistently from a single internal base to avoid round-trip drift.
- Traceable output. The PDF calculation record reproduces the inputs, results, equations and charts, plus blocks for project tag, revision, preparer, reviewer and signature — so the sheet can enter a normal engineering review.
Editorial and quality standards
Modules are checked against worked examples from the reference literature and, where relevant, against published standard methods such as ASTM D341 for viscosity–temperature behaviour or Manning's equation for open-channel flow. When a correlation has a restricted validity range, the module reports it rather than extrapolating silently. When a result approaches a physical limit — cavitation, choked flow, a two-phase boundary — the module flags it.
We correct errors quickly and openly. If you find one, please tell us; reported discrepancies are prioritised over new features.
Relationship to the referenced works
The three families are named after the textbooks whose methodology they follow, so that engineers can trace a result back to a familiar treatment. Engineering Suite B2B is an independent project. It is not affiliated with, endorsed by, or sponsored by those authors or their publishers, and it does not reproduce their tables, figures or text. Trademarks and titles are cited for identification only.
How the project is funded
The Site is free to use and is financed by advertising served through Google AdSense. Advertising is confined to clearly delimited blocks and is never placed inside a calculator's input or result area, never in a pop-up or overlay, and never in a position that could cause an accidental click. Advertising has no influence on the methods implemented or on the results returned. Data handling is described in our Privacy Policy.
Limits of the Service
These tools support preliminary calculation, study and verification. They do not replace detailed design, certified manufacturer data, or the judgement of the responsible professional engineer. Please read the Engineering Disclaimer before using a result in practice.
Contact
Questions, corrections and module requests: nofaceswithin@gmail.com · Contact page.