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Power recovery from low-grade heat by means of screw expanders /
Current concerns with climate change have resulted in greatly increased interest in power recovery from low grade heat sources. This includes both hot fluid streams which can be expanded directly to produce mechanical power and those which act as a source of heat to closed cycle power generation sys...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Cambridge, UK :
Woodhead Publishing,
2014.
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| Edición: | [Second edition]. |
| Colección: | Woodhead Publishing in mechanical engineering
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Power recovery from low-grade heat by means of screw expanders; Copyright; Contents; List of figures; Preface; Acknowledgements; Notation; Subscripts; About the authors; Introduction: power from lowgrade heat; 1:Expanders for power recovery; 1.1 Turbines; 1.2 Positive displacement machines; 2:Power plant thermodynamics; 2.1 Maximum work; 2.2 Some observations; 2.3 Practical considerations; 2.4 Working fluids other than water; 2.5 Fluid properties; 3:Geometry and manufacture of screw expander rotors; 3.1 Introduction; 3.2 Review of contemporary rotor profiles.
- 3.3 Screw expander rotor geometry3.4 Features of 'N' rotor profiles; 3.5 Geometry of rotor manufacturing tools; 3.6 Design of screw expander housings and choice of bearings; 4:Modelling and performance calculation of screw expanders; 4.1 The screw expander process and mathematical modelling; 4.2 Equations governing the screw machine processes; 4.3 Flow through the admission and discharge ports; 4.4 Flow through the leakage paths; 4.5 Injection of oil and other liquids; 4.6 Solution procedure for the screw machine thermodynamics; 4.7 Calculation of thermodynamic properties of working fluids.
- 4.8 Calculation of machine performance parameters4.9 Results of modelling and experimental investigations; 4.10 Calculation of pressure forces acting on screw machine rotors; 4.11 Radial, axial rotor loads, torque and bearing reactions; 4.12 Rotor deflections; 4.13 Recent advances in screw machine development; 5:Applications for screw expanders; 5.1 Screw expander lubrication; 5.2 Systems; 5.3 Cycles; 5.4 Cycle optimisation; Appendix 1: properties of commonly used working fluids; Appendix 2: estimation of working fluid properties; A2.1 The Redlich-Kwong-Soave equation of state.
- A2.2 Thermodynamic property estimationBibliography; Index.