Calculators

Thermodynamic process calculators

Each calculator solves one canonical process. Pick a tile — every page has the same shape: inputs on the left, schematic and equation on the right, results below.

Flow processesSteady-flow energy equation applied to one component.

Turbine

Adiabatic turbine — enthalpy drop → shaft work.

h₁ · h₂ · ṁ · C₁ · C₂ · ηᵢₛ

Compressor

Adiabatic compressor — shaft work → enthalpy rise.

h₁ · h₂ · ṁ · C₁ · C₂ · ηᵢₛ

Nozzle / Diffuser

Adiabatic nozzle — enthalpy drop → kinetic energy.

h₁ · h₂ · C₁

Boiler / Heater

Heat exchanger — work-free, h change is heat transfer.

h₁ · h₂ · ṁ

Throttle

Throttling valve — enthalpy is conserved across the restriction.

h₁

Non-flow processesClosed-system processes — Pv work, heat transfer, entropy change.

Constant volume

Rigid vessel — all heat input goes to internal energy.

T₁ · T₂ · cᵥ

Constant pressure

Piston-cylinder at constant P — boundary work plus heat.

T₁ · T₂ · cₚ · P · v₁ · v₂

Constant temperature

Isothermal process for an ideal gas — heat in equals work out.

P₁ · P₂ · R · T

Adiabatic

Reversible adiabatic — Pv^γ = constant.

P₁ · v₁ · P₂ · v₂ · γ

Polytropic

Polytropic — Pv^n = constant, general n.

P₁ · v₁ · P₂ · v₂ · n