Fix a state. Run a cycle.
See where the work goes.

ThermalOne brings 54 engineering thermodynamics calculations to iPad and Mac: states, devices, cycles, exergy, moist air, real fluids, combustion and equilibrium.

iPadOS 17+ and macOS 14+ · one-time purchase · fully offline

What it covers

State & properties

Water and steam states, ideal-gas properties and mixtures, real-gas cubic equations of state, departure functions and phase equilibrium.

First law

Process paths, closed-system energy balances, and cycle energy accounting, solved for the unknown term.

Control-volume devices

Nozzles, diffusers, turbines, compressors, pumps, heat exchangers, throttles, transient charging.

Second law & exergy

Entropy balances, isentropic efficiency, and a per-component exergy audit that ranks where work potential is destroyed.

Power cycles

Rankine, combined, Otto, Diesel, Dual, Brayton and turbojet cycles, including reheat, regeneration and intercooling.

Refrigeration & heat pumps

Vapour-compression, heat-pump, gas, cascade and multistage refrigeration, plus liquefaction.

Moist air

Psychrometric states, air-conditioning processes and cooling-tower calculations.

Reacting systems

Combustion, reacting energy and entropy, flame temperature, fuel cells and chemical equilibrium.

Why it's not a printed table

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