Efficiency limit for Carnot engine

Find di theoretical efficiency limit for heat engine.

Your numbers

Highest theoretical efficiency

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You must use absolute temperatures. Real engines get extra losses and lower efficiency.

Formula

Use η = 1−T_c/T_h. T_c and T_h na cold and hot reservoir absolute temperatures for K. Di theoretical efficiency fraction η dey show as percentage; di hot reservoir must hot pass di cold one.

Find di theoretical efficiency limit for heat engine.

Example wey show the calculation

Temperature of di hot reservoir (K): 600
Temperature of di cold reservoir (K): 300

Highest theoretical efficiency: 50 %

Where e fit work and limits

You must use absolute temperatures. Real engines get extra losses and lower efficiency.

We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.

Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.

Version of di formula: 1f83edd96c0f · Example don get check: 2026-10-30

Method