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Stirling cycle engines : inner workings and design / Allan J Organ
Resource type: Ressourcentyp: Buch (Online)Buch (Online)Sprache: Englisch Verlag: Chichester, West Sussex, United Kingdom : Wiley, 2014Auflage: Online-AusgBeschreibung: Online-Ressource (1 online resource (1 online resource (xxii, 272 pages))) : illustrationsISBN:- 9781306118484
- 1306118484
- 9781118818435
- 9781118818404
- 621.4/2 23
- 621.42
- TJ765
- TJ765 .O738 2013
Inhalte:
Zusammenfassung: Some 200 years after the original invention, internal design of a Stirling engine has come to be considered a specialist task, calling for extensive experience and for access to sophisticated computer modelling. The low parts-count of the type is negated by the complexity of the gas processes by which heat is converted to work. Design is perceived as problematic largely because those interactions are neither intuitively evident, nor capable of being made visible by laboratory experiment. There can be little doubt that the situation stands in the way of wider application of this elegant concepPPN: PPN: 807197033Package identifier: Produktsigel: ZDB-26-MYL | ZDB-30-PAD | ZDB-30-PQE
Stirling myth - and Stirling realityRéflexions sur le cicle de Carnot -- What Carnot efficiency? -- Equivalence conditions for volume variations -- The optimum vs optimization -- Design correlations - heat transfer -- A question of adiabaticity -- More adiabaticity -- Dynamic similarity -- Intrinsic similarity -- Getting started -- Fasttrack gas path design -- Flexiscale -- Rescale -- Less steam, more traction - Stirling engine design without the hot air -- Heat transfer correlations - from the horse's mouth -- Wire mesh regenerator - back-of-envelope sums -- Son of Schmidt -- H2 vs He vs air -- The hot-air engine -- Ultimate Lagrange formulation -- Appendix A-1: The reciprocating carnot cycle -- Appendix A-2: Determination of V2 and V4 - polytropic processes -- Appendix A-3: Design charts - nomograms -- Appendix A-4: Kinematics of lever-crank drive.
Stirling Cycle Engines; Contents; About the Author; Foreword; Preface; Notation; 1 Stirling myth - and Stirling reality; 1.1 Expectation; 1.2 Myth by myth; 1.2.1 That the quarry engine of 1818 developed 2 hp; 1.2.2 That the limiting efficiency of the stirling engine is that of the Carnot cycle; 1.2.3 That the 1818 engine operated 'on a principle entirely new'; 1.2.4 That the invention was catalyzed by Stirlings concern over steam boiler explosions; 1.2.5 That younger brother James was the true inventor
1.2.6 That 90 degrees and unity respectively are acceptable 'default' values for thermodynamic phase angle a and volume ratio K1.2.7 That dead space (un-swept volume) is a necessary evil; 1.3 and some heresy; 1.4 Why this crusade?; 2 Réflexions sur le cicle de Carnot; 2.1 Background; 2.2 Carnot re-visited; 2.3 Isothermal cylinder; 2.4 Specimen solutions; 2.5 'Realistic' Carnot cycle; 2.6 'Equivalent' polytropic index; 2.7 Réflexions; 3 What Carnot efficiency?; 3.1 Epitaph to orthodoxy; 3.2 Putting Carnot to work; 3.3 Mean cycle temperature difference, Tx T - Tw
3.4 Net internal loss by inference3.5 Why no p-V diagram for the 'ideal' Stirling cycle?; 3.6 The way forward; 4 Equivalence conditions for volume variations; 4.1 Kinematic configuration; 4.2 'Additional' dead space; 4.3 Net swept volume; 5 The optimum versus optimization; 5.1 An engine from Turkey rocks the boat; 5.2 ... and an engine from Duxford; 5.3 Schmidt on Schmidt; 5.3.1 Volumetric compression ratio rv; 5.3.2 Indicator diagram shape; 5.3.3 More from the re-worked Schmidt analysis; 5.4 Crank-slider mechanism again; 5.5 Implications for engine design in general
6 Steady-flow heat transfer correlations6.1 Turbulent - or turbulent?; 6.2 Eddy dispersion time; 6.3 Contribution from 'inverse modelling'; 6.4 Contribution from Scaling; 6.5 What turbulence level?; 7 A question of adiabaticity; 7.1 Data; 7.2 The Archibald test; 7.3 A contribution from Newton; 7.4 Variable-volume space; 7.5 Désaxé; 7.6 Thermal diffusion - axi-symmetric case; 7.7 Convection versus diffusion; 7.8 Bridging the gap; 7.9 Interim deductions; 8 More adiabaticity; 8.1 'Harmful' dead space; 8.2 'Equivalent' steady-flow closed-cycle regenerative engine; 8.3 'Equivalence'
8.4 Simulated performance8.5 Conclusions; 8.6 Solution algorithm; 9 Dynamic Similarity; 9.1 Dynamic similarity; 9.2 Numerical example; 9.3 Corroboration; 9.4 Transient response of regenerator matrix; 9.5 Second-order effects; 9.6 Application to reality; 10 Intrinsic Similarity; 10.1 Scaling and similarity; 10.2 Scope; 10.2.1 Independent variables; 10.2.2 Dependent variables; 10.2.3 Local, instantaneous Reynolds number Re; 10.3 First steps; 10.4 without the computer; 11 Getting started; 11.1 Configuration; 11.2 Slots versus tubes; 11.3 The 'equivalent' slot; 11.4 Thermal bottleneck
11.5 Available work lost - conventional arithmetic
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