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Focused engineering tools for fast, well-defined problems.
24 calculators · Thermal Engineering
Thermal Engineering
24 calculatorsDomain overview →
Thermodynamic Properties & Processes
- Ideal Gas Law CalculatorpV = mRT solved for pressure, volume, mass, temperature or the gas constant, with absolute pressure and temperature only.
- Ideal-Gas Internal Energy & Enthalpy CalculatorΔu = cᵥΔT and Δh = cₚΔT with totals for a mass, or the final temperature a stated Δu or Δh implies.
- Specific Heat & Heat-Capacity Ratio CalculatorComplete R, cₚ, cᵥ and γ from any two, with redundant inputs cross-checked and conflicts refused.
- Polytropic Process Calculatorpvⁿ = const for an ideal gas: final state, boundary work, ΔU, ΔH and Q, with the isobaric, isothermal and isentropic cases named.
First Law & Energy Devices
- Closed-System First Law CalculatorΔU = Q − W for a fixed mass, solved for ΔU, Q or W, or all three checked for consistency, with Q > 0 into and W > 0 done by the system.
- Steady-Flow Energy Equation Calculatorq − wₛ = Δh + ΔV²/2 + gΔz per unit mass or as rates, solved for q, wₛ, h1, h2 or the outlet speed with every term shown.
- Turbine Power CalculatorTurbine shaft power and specific work from mass flow, enthalpy drop, speeds and elevations, adiabatic or with a stated heat rate.
- Compressor Power CalculatorCompressor power input and specific work input from the same steady-flow balance, with heat transfer stated rather than assumed.
- Nozzle & Diffuser CalculatorNozzle exit speed from an enthalpy drop or diffuser exit enthalpy from a speed drop, with no shaft work and impossible kinetic-energy states refused.
Thermodynamic Cycles
- Carnot Efficiency CalculatorThe reversible limit η = 1 − T_C/T_H between two reservoirs, with the work and rejected heat of a stated heat input.
- Otto Cycle CalculatorIdeal air-standard Otto efficiency from compression ratio and γ, with the four corner states and heat terms.
- Diesel Cycle CalculatorIdeal air-standard Diesel efficiency from compression ratio, cutoff ratio and γ; r_c → 1 recovers the Otto cycle.
- Brayton Cycle CalculatorIdeal air-standard Brayton efficiency from pressure ratio and γ, with the four corner states from inlet and turbine-inlet temperatures.
- Refrigerator & Heat-Pump COP CalculatorReversible refrigerator and heat-pump COPs between two reservoirs, with COP_HP = COP_R + 1 kept visible.
Conduction & Convection
- Plane-Wall Conduction CalculatorSteady plane-wall resistance, signed heat rate and heat flux from constant conductivity and boundary temperatures.
- Cylindrical-Wall Conduction CalculatorLogarithmic radial resistance and signed heat rate through a cylindrical shell.
- Thermal Resistance Network CalculatorSeries or parallel equivalent of conduction, convection and prescribed resistances, with topology-qualified temperatures.
- Convection Heat Transfer CalculatorNewton cooling with prescribed h: resistance, signed surface-to-fluid heat rate and heat flux.
- Fin Efficiency & Heat Transfer CalculatorStraight uniform adiabatic-tip fin parameter, efficiency and signed heat rate, including the zero-length limit.
Radiation & Heat Exchangers
- Stefan–Boltzmann Radiation CalculatorStefan–Boltzmann Radiation from frozen Thermal primitives with explicit physical validity.
- Radiation Exchange CalculatorRadiation Exchange from frozen Thermal primitives with explicit physical validity.
- Overall Heat-Transfer Coefficient CalculatorOverall Heat-Transfer Coefficient from frozen Thermal primitives with explicit physical validity.
- LMTD Heat Exchanger CalculatorLMTD Heat Exchanger from frozen Thermal primitives with explicit physical validity.
- Effectiveness–NTU CalculatorEffectiveness–NTU from frozen Thermal primitives with explicit physical validity.