Ing Ind - Inf (Mag.)(ord. 270) - MI (475) ELECTRICAL ENGINEERING - INGEGNERIA ELETTRICA
097736 - RENEWABLE ENERGY SOURCES AND NETWORK INTERFACE
The course aims to illustrate the technologies available for the production of electrical and/or thermal energy from Renewable Energy Sources (RES) and to discuss the present and future role of RES in the worldwide scenario. The course deals with the production of electricity and/or heat/cold from RES by providing the theoretical basis, the principles of operation, the technological solutions, the environmental impact and the application contexts of these power plants. The course covers non-programmable sources (sun, wind, water) as well as sources that are more programmable (biomass, biowaste, hydroelectric basin) or are used for covering the base load (geothermal). The course provides the students with the skills to operate in the field of power plants from RES: from decision-making skills required in the design phase, including the evaluation of economical competetitiveness, to the technical and operational skills required during the operation phase.
Risultati di apprendimento attesi
Upon fullfillment of the course, the students will be able to:
- understand the laws of physics which rule the behaviour of the various technologies applied in the renewable energy field (DdD1)
- understand the theoretical potential of satisfying world energy needs of main renewable energy sources (DdD1)
- become familiar with the state-of-the-art of main technologies applied to produce electrical energy from renewable sources (DdD2)
- justify the typical performances of power plants based on renewable energy sources (DdD2,3)
- fulfill preliminary design of renewable energy plants and select the design parameters of main components (DdD3,4)
- learn how to calculate yearly energy balances of plants based upon renewable energies (DdD3,4)
- become familiar with economic parameters related to power plant operation (DdD2)
during the exam, the student should show his ability to solve problems (DdD3) and to describe the relevant aspects of various technologies related to renewable energy sources)
Introduction and perspectives. The potential of renewable energy sources: present role, near term and long term future. Types of sources and issues related to their use for the production of electrical and thermal energy. Incentives for RES development. Current situation and forecast scenarios. Hybrid solutions, integration with fossil fuels and storage systems. Stand alone and grid connected solutions.
Wind energy. Betz theory and operational laws, types of machines, applications. Sizing criteria, regulation and characteristics. Coupling with the electrical generator and power electronic converters. Characterization of wind site and profitability analysis for a wind turbine field. Environmental impact of wind farms. Off-shore wind farms. Mini-wind turbines.
Geothermal energy. Types of geothermal sources: vapour-dominated or liquid-dominated, hot dry rocks. Drilling and exploration techniques. Plants for the production of electrical energy: direct steam, flash, binary plants. ORC plants. Cogeneration, with district heating/cooling and other low temperature heat users.
Energy from biomass and biowaste. Types of biomass and potential. Conversion systems with grate boilers: steam cycles and ORC. Gasifiers and internal combustion engines. Flue gas treatment plants. Anaerobic digestion systems for the production of biogas.
Solar energy. Solar radiation: potential, solar spectrum, angles. Prediction of available energy on plan and tilted surfaces.
Photovoltaic plant: photoelectric effect, silicon photovoltaic cells, electrical characteristic of the cell and manufacturing of solar cells and photovoltaic arrays, inverter and power conditioning systems. First, second and third generation. Design criteria of grid connected plant and stand-alone plant. Thin-film solar photovoltaic cells and multi-junction cells, recent technological developments.
CSP (Concentrated Solar Power) plants: classification of concentrating systems. Cylindrical-parabolic collectors, parabolic dish systems, Fresnel systems, central receiver systems. Working fluids, thermodynamic cycles and thermal storage tanks.
Heat production for domestic applications.
Hydroelectric energy: types of hydroelectric power plants (dams, Pumped-storage, Run-of-the-river). Types of plants and hydraulic machines. Mini-hydro. Potential of hydro resource. Sizing criteria and management. Environmental impact.
Wave energy. Classification of technologies available or being tested: energy from marine currents, wave, tidal, systems that exploit the thermal gradient of the oceans (OTEC).
Micro-cogeneration, trigeneration and heat pumps. Various heat sinks: air, ground and well. Working principles, prime movers, potential and economic competitiveness.
The prerequisits model covers the basic knowledge of thermodynamics, fluid-dynamics and electricity rules
Modalità di valutazione
Oral examination at the end of the course on the entire program.
Part of the oral exam deals with the technical papers prepared by the students during the numerical applications.
In particular it is mandatory for students handing in during oral examination written reports describing the adopted solution and the commented results of the numerical applications.
The oral examination assesses the student capability of:
- describe the model approches (DdD1,2,4)
- justify the typical performance of various plants based on renewable energy sources on design as well as on off-design conditions (DdD2,3)
- comment the economic competitiveness fo various solutions (DdD3,4)
- draw simplified plant schemes (DdD3,4)
Tipo Forma Didattica
Ore di attività svolte in aula
Ore di studio autonome
Laboratorio Di Progetto
Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua
Disponibilità di materiale didattico/slides in lingua inglese
Possibilità di sostenere l'esame in lingua inglese