IN/0123 - ENERGETICS
Academic Year 2016/2017
Free text for the University
ANDREA FRATTOLILLO (Tit.)
- Teaching style
- Lingua Insegnamento
|[70/84] ENERGETIC ENGINEERING||[84/00 - Ord. 2016] PERCORSO COMUNE||6||60|
For several years it showed the increasingly central role that energy plays in modern society. Several Community directives as communications of the European Commission (COM / 2011/112 Roadmap for moving to a competitive low-carbon economy in 2050 of March and COM / 2011/885 Energy Roadmap 2050 in December) who raised the issue of forming a trajectory in 2050 to reach a level of decarbonization of 80% compared with 1990 and how to get this objective while ensuring energy security and competitiveness of the European economy as a whole. Both global scenarios of the IEA (International Energy Agency) that those national ENEA show that energy efficiency represents the main technological option for reducing emissions, especially in the short to medium term. The buildings, accounting for about one third of the energy consumption of our country, are in this sense perhaps the main area of intervention, given the many technological options already widely available and relatively short useful life of many end-use devices (Scenario Roadmap ENEA). In this perspective, the Directive 2010/31 / EU requires a clear acceleration in improving the performance of the European building stock, including, for example, from 2019, to ensure their energy services, public buildings of new construction is impact-emissivity almost zero (Nearly Zero Energy Buildings, NZEB). The Natural Environment, the place where they are picked raw materials and energy carriers, is also the place where the waste is dumped processes of transformation and consumption of economic goods derived from raw materials
The course has the goal of training to enable students a global view of the energy problem by taking into account the regulatory environment, legislative, economic and technological environment in which all processes of procurement, processing and use take place; The everything taking into consideration the climatic and environmental implications that the use of different technologies may result. This knowledge will lead the student to seek solutions to streamline and improve the current processes of conversion, transport and utilization of energy, improving the "Wellness Collective" but at the same time minimizing the factors of "Environmental Alteration".
The goal of the training can be achieved with the knowledge of the legislation and national and European legislation in force, including the Community set objectives for the future and working through the URE (Rational Use of Energy)
The course aims to provide students
• a systematic understanding of energy issues and a mastery of the methods of analysis and evaluation used;
• the ability to analyze, design and complex energy systems
• Capacity for critical analysis and evaluation of new ideas and solutions in the energy field;
Knowledge and analysis of different data and indicators related to the rational use of energy and economic implications - environmental.
• Use of analysis tools and simulation to evaluate the energy performance such as: dedicated software, databases IEA (International Energy Agency), national portals (eg ENEA) and international (eg OECD)
The student who follows the course of Energy must have the following knowledge:
Fundamentals of Physics;
Fundamentals of thermodynamic processes and thermodynamic cycles
Basic Concepts of Economics.
Presentation and initial reminders (6 hours L)
- Presentation of the course and examination procedures. The energetics fundamentals: global health, the correlations between energy and GDP, the current energy needs and its likely evolution, the production of CO2 (IEA data, OECD and MiSE).
- Elements of Thermodynamics: I and II law for open systems.
- Reminders on RES: classification and market prospects
The exergetic analysis (6 hours L + h 3 E)
- The exergy quantity associated with mass and energy flows. Exergy balances: Guy Stodola theorem.
- Exergy-enthalpy diagram and the structural link coefficient.
- The exergetic analysis of heat exchangers, engine and heat pumps.
The inverse and absorption cycles (9 hours L)
- Inverse heat pump and refrigeration cycles. The reverse Carnot machine.
- Heat pumps for direct and indirect absorption.
- The use of thermal energy from "heat recoveries" or RES.
The High Efficiency Cogeneration systems (HEC) (15 hours L + 3 hours E)
- The combined production of electricity and heat by internal combustion engines, Stirling engines, gas turbines and steam turbines.
- The trigeneration systems
- The national system of incentives for non-traditional systems: the simplified purchase and resale arrangements, the net metering, the all-inclusive tariff, the heating & cooling support scheme, the Energy Efficiency Certificates (EEC), RECS (Renewable Energy Certificate System), tax relief and biomethane, the D1 tariff.
- Thermodynamic optimization of cogeneration and trigeneration plants through the exergetic analysis.
Feasibility study for cogeneration plants (6 hours 6 hours L + E)
- Setting up a feasibility study: energy user characterization, choice of technologies, comparison with traditional production systems.
- The parameters for the energy assessment, environmental and economic investment.
District heating (6 hours LO)
- Current status and potential development of district heating
- Analysis of preliminary projects and supporting technologies compared.
Lesson front about 45 hours;
Using the examples of slides and graphics, use the blackboard to integrate and deepen specific topics, participation in seminars and conferences focused on energy and the environment.
Classroom exercises 15 hours on specific case studies.
Verification of learning
Correction, assessment and comment on exercise performed.
Written examination on the topics covered during the lessons with particular reference to feasibility studies on cogeneration systems.
Oral examination aimed at ascertaining the knowledge of the arguments the lesson durations and their application in practical cases of energy engineering.
Analisi Exergetica; Andrea Galliani, Ernesto Pedrocchi – ED Polipres
Fondamenti di Termodinamica per ingegneri” M.W. Zemansky M.M. Abbott H.C. - Ed. Zanichelli
Efficienza Energetica degli Edifici Teo-ria e Legislazione, C. Bernardini, C.C.Mastino – ED Tecnograph S.r.l. Tecnogr
Principi di trasmissione del calore” F. Kreith - Liguori Editore.
L’energia solare nelle applicazioni termiche“ J. A. Cuffie, W. A. Beckman - Liguori Editore
Energie: Economie et prospectives” A. Gardel Pergamon Press.
Economia” P.A. Samuelson, W.D. Nordhaus - Ed. Zanichelli.
Elementi di acustica Tecnica” Renato Lazarin
Illuminotecnica” Moncada Lo Giudice
The student has all the material shown in class in the form of slides. It is also made available to the student materials and tools for the conduct of the exercise of such calculation and simulation software and educational materials shown and screened during exercise