Unit MACHINE
- Course
- Industrial engineering
- Study-unit Code
- 70300012
- Curriculum
- In all curricula
- CFU
- 12
- Course Regulation
- Coorte 2019
- Offered
- 2021/22
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa integrata
POWER PLANTSDESIGN & OPTIMIZATION
| Code | 70002806 |
|---|---|
| CFU | 6 |
| Teacher | Francesco Fantozzi |
| Teachers |
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| Hours |
|
| Learning activities | Caratterizzante |
| Area | Ingegneria energetica |
| Academic discipline | ING-IND/08 |
| Type of study-unit | Obbligatorio (Required) |
| Language of instruction | Italian |
| Contents | General thermodynamic - Steam plants - Gas Turbines - Internal combustion engines - Gas-steam cycles - Nuclear and fuel cell basics - Renewables |
| Reference texts | G. Bidini, "Impianti di conversione energetica" Ed. Anteo, Perugia, 2008 C.Caputo, "Impianti termici" Ed. Masson S. Stecco, G. Manfrida, "Impianti di conversione energetica", Pitagora. Teching material |
| Educational objectives | 1st & 2nd law analysis of energy systems andcomponents. Design and operaration of energy systems based on steam, gas and water turbines, internal combustion engines and renewables |
| Prerequisites | Applied physics |
| Teaching methods | Frontal lessons |
| Other information | n.a. |
| Learning verification modality | In the written examination the student will solve a problem relative to the design of an energy plant or a component. If the written examination is passed, the student will be admitted to the oral examination in which he will be asked two questions on theory or numerical applications. |
| Extended program | Thermodynamics: thermodynamic quantities and diagrams , transformations: compression & expansion, politropic & adiabatic efficiency, 1st & 2nd law principles and applications, exergy - Steam cycles - Rankine-Hirn - Basic cycle - work & efficiency for ideal, politropic and real cycles - Optimal operational parameters - Improvements of base cycle - Regeneration - infinite bleedings & z bleedings - reheat - Power control - Air-fumes and water-steam circuits - Components - Gas turbine cycles - Basic cycle - work & efficiency for ideal, politropic and real cycles - Optimal operational parameters - Improvements of base cycle - Regeneration - Interrefrigeration - post combustion - Power control - Multishaft solutions - Components - Gas-steam cycles - Combined cycles - HRSG and multi pressure solutions - STIG, HAT & RWI cycles - Introduction to aerospace propulsion - Internal combustion engines - Cycles: Beau de Rochas - Otto - Diesel - Sabbathè - work & efficiency for ideal, politropic and real cycles - Optimal operational parameters and power equation - Technical drawings for 2 & 4 strokes engines - Charging & supercharging - Emissions - Introduction to nuclear Energy, and fuel cells; Renewable energies: Solar - Wind - Hydro - Geothermal - Biomass & Waste |
TURBOMACHINERY DESIGN & OPTIMIZATION
| Code | 70034406 |
|---|---|
| CFU | 6 |
| Teacher | Michele Battistoni |
| Teachers |
|
| Hours |
|
| Learning activities | Caratterizzante |
| Area | Ingegneria energetica |
| Academic discipline | ING-IND/08 |
| Type of study-unit | Obbligatorio (Required) |
| Language of instruction | Italian |
| Contents | Introduction to fluid and thermal machines. Power generating and power absorbing turbomachines operating with Compressible fluid. Power generating and power absorbing turbomachines operating with Incompressible fluid. Volumetric power generating and power absorbing machines. |
| Reference texts | Intructor's notes and personal notes. Course Book: V. Dossena et al., Macchine a fluido, Città Studi Edizioni, 2nd edition, 2020 Additional Reference books: - G. Bidini, Turbomacchine, Ed. Anteo, Perugia, 2008 - C. Caputo, Le Turbomacchine, Ambrosiana 1994 - G. Manfrida, S. Stecco, Le Turbomacchine, Pitagora Ed. 1993 - G. Cornetti, F. Millo, Macchine Idrauliche, Il Capitello, Torino, 2015 - G. Cornetti, F. Millo, Scienze Termiche e Macchine a Vapore, Il Capitello, Torino, 2015 - G. Cornetti, F. Millo, Macchine a Gas, Il Capitello, Torino, 2015 |
| Educational objectives | Acquire knowledge and skills concerning the analysis, selection and design of fluid machinery and components. |
| Prerequisites | knowledge of previous courses: Fisica Tecnica, Fisica and Analisi Matematica |
| Teaching methods | - lectures - exercises |
| Other information | |
| Learning verification modality | - written test - oral test |
| Extended program | Introduction to fluid and thermal machines. Classification of Fluid Machinery: turbo- and volumetric machines, incompressible and compressible fluid. Theory of similitude, dimensional analysis. Reynolds number, Mach number, the specific speed, flow coefficients and pressure coefficient. Boundary layer, lift and drag of a profile. Basic equations of fluid mechanics. Turbine blades, phenomenology of the flow through orifices and blade passages. Power generating turbomachines operating with Compressible fluid: steam turbines and gas turbines. Fluid dynamics of expansion nozzles, rotating and fixed vanes; static and total flow quantities; Hugoniot equations; Stodola cone, criteria for nozzle sizing; velocity triangles; work exchange between fluid and blades; degree of reaction; stage efficiency; volumetric efficiency; effect of steam humidity; multi-stage turbines; turbine types; three-dimensional effects; part-load operation of turbines. Basics of radial flow turbines. Steam turbine and gas turbine stages. Refrigeration of gas turbine blades. Power absorbing turbomachines operating with Compressible fluid: centrifugal and axial compressors. Introduction to centrifugal compressors; velocity triangles; dimensional analysis; flow and pressure coefficients; performance curves; slip factor, diffuser and volute. Sizing of a centrifugal compressor. Introduction to axial compressors; blades, vanes, stages; velocity triangles; dimensional analysis; flow and pressure coefficients; performance curves. Sizing of an axial compressor stage. Flow phenomenology through vanes. Limits of 1D approach; pressure profiles. Compressors in a system; stalling and surging. Power generating turbomachines operating with Incompressible fluid: hydraulic turbines. Equations for incompressible flows; Bernoulli's equation; basics of hydroelectric power generation. Hydraulic turbine features; Pelton, Francis and Kaplan turbines. Degree of reaction; velocity triangles; dimensional analysis; flow and pressure coefficients; performance curves. Cavitation. Power absorbing turbomachines operating with Incompressible fluid: pumps. Centrifugal pumps. Blades, vanes, velocity triangles; performance curves; diffuser, volute. Cavitation. NPSH, Pump-circuit system. Serial and parallel configuration. Centrifugal pump design. Volumetric power generating and power absorbing machines. Positive displacement machines: volumetric pumps, piston pumps, screw pumps. Performance curves. |