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Both calculators run independently — change the inputs on either side to compare results.
Chemical Engineering
Arrhenius Equation Calculator
Compute a chemical reaction rate constant from the Arrhenius equation k = A · exp(−Eₐ/(R·T)). The standard tool for predicting how reaction rates depend on temperature, used everywhere from catalyst design to pharmaceutical stability testing.
Fill in the required fields to see your result.
Chemical Engineering
LMTD Heat Exchanger Calculator
Compute the log mean temperature difference (LMTD) — the effective driving force for heat transfer in a heat exchanger, given the four end-of-fluid temperatures. The standard input to the design equation Q = U·A·LMTD for sizing or rating exchangers.
Fill in the required fields to see your result.
Key differences
| Arrhenius Equation Calculator | LMTD Heat Exchanger Calculator | |
|---|---|---|
| Category | Chemical Engineering | Chemical Engineering |
| Inputs required | 3 | 4 |
| Result | Rate Constant (s⁻¹) | LMTD (°C) |
| What it does | Compute a chemical reaction rate constant from the Arrhenius equation k = A · exp(−Eₐ/(R·T)). The standard tool for predicting how reaction rates depend on temperature, used everywhere from catalyst design to pharmaceutical stability testing. | Compute the log mean temperature difference (LMTD) — the effective driving force for heat transfer in a heat exchanger, given the four end-of-fluid temperatures. The standard input to the design equation Q = U·A·LMTD for sizing or rating exchangers. |