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| Metoden med koncentrerad kapacitans× | Finit-tidsteromodynamik× | |
|---|---|---|
| Ämnesområde | Termodynamik | Termodynamik |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1959 | 1996 |
| Upphovsperson≠ | Harry Carslaw and John Jaeger | Adrian Bejan |
| Typ≠ | Heat transfer analysis | Thermodynamic optimization |
| Ursprungskälla≠ | Carslaw, H. S., & Jaeger, J. C. (1959). Conduction of Heat in Solids. Oxford University Press. ISBN: 978-0198533689 | Bejan, A. (1996). Entropy Generation Minimization. CRC Press. ISBN: 978-0849394515 |
| Alias | lumped mass analysis, lumped system analysis | FTT, irreversible thermodynamics |
| Närliggande | 3 | 3 |
| Sammanfattning≠ | The Lumped Capacitance Method is a simplification technique for solving unsteady-state heat transfer problems. It assumes that thermal properties are uniform throughout a solid body and that temperature variations within the object are negligible. This approach enables engineers to solve complex transient heat conduction problems using ordinary differential equations rather than partial differential equations. | Finite-Time Thermodynamics (FTT) relaxes the classical assumption that thermodynamic processes occur reversibly (infinitely slowly). Instead, it analyzes real thermal systems operating at finite rates with irreversibilities. FTT reveals fundamental trade-offs: to complete a process quickly requires accepting large irreversibilities and low efficiency, while slow operation achieves high efficiency but requires impractical time and cost. |
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