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Thermal Efficiency from Work and Heat Calculator — result sheet
Calculate thermal efficiency and rejected heat from useful work and input heat.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Efficiency=useful work/input heat; rejected heat=input heat−useful work.
The first-law accounting makes the retained work share and the leftover heat explicit.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Useful work output — J; minimum 0; maximum 1.0E+15
- Heat input — J; minimum 1.0E-6; maximum 1.0E+15
Worked example
| Input | Value |
|---|---|
| Useful work output | 1000 |
| Heat input | 2500 |
Efficiency =40%; rejected heat =1500 J.
Assumptions and limits
- Useful work and heat input are measured over the same cycle or process.
- Input heat is positive and useful work does not exceed it in the ordinary engine scenario.
- Reversible limits, friction, and equipment certification are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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