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Engine efficiency vs. RPM of Stirnol engine.
| S No | Temp Diff (°C) | Aluminum | Copper | Brass | Bronze |
|---|---|---|---|---|---|
| Max Efficiency (%) | Max Efficiency (%) | Max Efficiency (%) | Max Efficiency (%) | ||
| 1 | 20 | 0.063 | 0.1 | 0.035 | 0.02 |
| 2 | 25 | 0.075 | 0.11 | 0.045 | 0.024 |
| 3 | 30 | 0.09 | 0.13 | 0.052 | 0.03 |
| 4 | 35 | 0.1 | 0.145 | 0.06 | 0.035 |
