Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Thermodynamics
Heat Exchanger LMTD Calculator
Calculates the Log Mean Temperature Difference (LMTD) for counter-flow or parallel-flow heat exchangers, then uses it to find the required heat transfer area or rate. Used in the design and rating of industrial heat exchangers.
Fill in the required fields to see your result.
Thermodynamics
Otto Cycle Analysis Calculator
Calculate the ideal thermal efficiency of a spark-ignition gasoline engine using the Otto cycle model. Enter compression ratio and specific heat ratio to see how engine geometry limits maximum theoretical efficiency.
Fill in the required fields to see your result.
Key differences
| Heat Exchanger LMTD Calculator | Otto Cycle Analysis Calculator | |
|---|---|---|
| Category | Thermodynamics | Thermodynamics |
| Inputs required | 5 | 2 |
| Result | Log Mean Temperature Difference (°C) | Otto Cycle Thermal Efficiency (%) |
| What it does | Calculates the Log Mean Temperature Difference (LMTD) for counter-flow or parallel-flow heat exchangers, then uses it to find the required heat transfer area or rate. Used in the design and rating of industrial heat exchangers. | Calculate the ideal thermal efficiency of a spark-ignition gasoline engine using the Otto cycle model. Enter compression ratio and specific heat ratio to see how engine geometry limits maximum theoretical efficiency. |