Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Thermodynamics
Diesel Cycle Calculator
Compute the theoretical thermal efficiency of a Diesel engine cycle from its compression ratio and cut-off ratio. Use this to compare engine designs or understand how operating parameters limit maximum efficiency.
Fill in the required fields to see your result.
Thermodynamics
Heat Pump COP Calculator
Calculate a heat pump's coefficient of performance (COP) from its heating capacity and power draw, with optional correction for defrost-cycle losses below 7 °C. Used to compare heat pump models and assess seasonal energy costs.
Fill in the required fields to see your result.
Key differences
| Diesel Cycle Calculator | Heat Pump COP Calculator | |
|---|---|---|
| Category | Thermodynamics | Thermodynamics |
| Inputs required | 2 | 4 |
| Result | Diesel Cycle Efficiency (%) | Heat Pump COP |
| What it does | Compute the theoretical thermal efficiency of a Diesel engine cycle from its compression ratio and cut-off ratio. Use this to compare engine designs or understand how operating parameters limit maximum efficiency. | Calculate a heat pump's coefficient of performance (COP) from its heating capacity and power draw, with optional correction for defrost-cycle losses below 7 °C. Used to compare heat pump models and assess seasonal energy costs. |