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Politecnico di Torino
Academic Year 2009/10
08BGYFF, 02KAIFD
Thermotechnical systems/ Methods for a rational use of energy
1st degree and Bachelor-level of the Bologna process in Energy Engineering - Torino
1st degree and Bachelor-level of the Bologna process in Electrical Engineering - Torino
Teacher Status SSD Les Ex Lab Tut Years teaching
Cima Carlo ORARIO RICEVIMENTO RC ING-IND/10 34 18 4 0 8
Gerboni Raffaella ORARIO RICEVIMENTO     28 0 28 0 2
SSD CFU Activities Area context
ING-IND/10
ING-IND/19
5
5
D - A scelta dello studente
D - A scelta dello studente
A scelta dello studente
A scelta dello studente
Objectives of the course
MODULE OF THERMOTECHNICAL SYSTEMS

The course is aimed to analise both from design and performance points of view some tipologies of thermal plants adopted on domestic and industrial ground, considering several solutions modifying the reference ones examined in the basic thermodynamics courses.

MODULE OF METHODS FOR A RATIONAL USE OF ENERGY

The course provides an introduction to the basics of energy sources economics. Additionally, it provides an overview and a full description of some of the main analysis tools for assessing the energy and environmental performances of energy systems, as a main focus. These tools (life cycle assessment, well-to-wheel analysis), are described using the preferred applicative approach, with several real-world examples. An introduction to the energy planning is also offered, including an application of it to a pre-defined territory. Finally, technological solutions for a rational use of energy in an urban area, such as district heating, are described.
Expected skills
MODULE OF THERMOTECHNICAL SYSTEMS

The student should acquire the capability to propose plant solutions for thermal applications both on domestic and industrial ground and to critically examine and eventually to modify existing devices.

MODULE OF METHODS FOR A RATIONAL USE OF ENERGY

At the end of the course the students should:
- Find and use statistics on energy and environmental performances of different countries
- Be able to perform a simplified life cycle assessment
- Know the technological and environmental features of a district heating network
- Recognise retail products with a low environmental impact
- Design thermotechnical systems for buildings in an urban area
- Solve simple optimisation exercises
Prerequisites
Applied thermodynamics and heat transfer, Energetics.
Syllabus
MODULE OF THERMOTECHNICAL SYSTEMS

a) heat exchangers: main tipologies, calculation methods (effective mean temperature difference, efficiency ' number of tranfer units), corrections for multiple passages configurations and for crossing flows configurations, effects of dirtying.
b) heat generations and heating plants: mass balances, combustion stoichiometry introducing the concepts of theorical amount of air, air excess, air index, quantitative prediction of combustion products composition, energy balance and evaluation of the efficiency both directly and undirectly (concept and evaluation of the heat losses), heating plants (basic components, organisation and dimensioning of the plant, choice and dimensioning of the heating terminals), forensic of heating;
c) refrigeration plants: single vapour compression cycle (choice of the process fluid, echological properties of the process fluid) and its modifications (double compression and intercooling cycle, double compression and double lamination cycle, cascade cycles), gas cycles (inverse Joule cycle and its modifications for particular applications), absorption cycles, Peltier refrigerators;
d) air conditioning: psychrometry, reference summer and winter air conditioning plants, use of recirculation technique, Fanger theory for thermal confort, notes on Indoor Air Quality.

MODULE OF METHODS FOR A RATIONAL USE OF ENERGY

- Introduction to the course
- World energy outlook: data sources (IEA, OECD, BP')
- Energy systems evolution dynamics: de-materialisation and de-energisation of the economies
- Evaluation of the energy demand (Silvestri).
- Introduction to the logistic (Volterra)
- Multiple competition, Fischer-Pry transformation, Kondratiev cycles
- Penetration of the energy sources (Nakicenovic)
- Description of an energy system; the RES (Reference Energy System)
- The Italian Energy Plan (PEN ' Piano Energetico Nazionale): its objectives
- Elements of linear programming
o Operational research
- The energy planning: energy modelling
- Analysis of the thermal demand of an area, the load curve, the economic characterisation of a technology
- Elements of investments analysis
- The district heating
- Life cycle assessment
o Generalities, goal and scope, inventory analysis
o The energy analysis, the energy mixes, allocation methods, the gross energy requirement
o The end of life: open and closed loop. Recycling and reuse.
o Impact assessment
o Interpretation and recommendations
o EcoIndicator 99.
o Database LCA. Database ecoinvent: a source for LCA. Query and interpretation
o LCA applications: the case of sustainability in buildings (Casaclima, BEES, Rockwool)
- The labels: their meaning and use. Examples
o Tipe I ' Ecolabel
o Tipe II ' voluntary
o Tipe III ' EPD
- Externalities: the Impact Pathway methodology. Externality evaluation: the Ecosense tool.
- EBAMM database and biofuels
- Well-To-Wheel analysis: what are they, how can be performed, what's the use of them. GM example
Laboratories and/or exercises
Solution of exercises dealing with the main subjects of the classes.
Bibliography
The student can adopt any text treating either each argument of the course or the course as a whole; a suggestion could be:

P.Anglesio / Elementi di Impianti Termotecnici / Pitagora (Bologna)
Check availability at the library
Revisions / Exam
MODULE OF THERMOTECHNICAL SYSTEMS

The exam consists of a written test including both numerical exercises and theoretical open questions.

MODULE OF METHODS FOR A RATIONAL USE OF ENERGY

The examination consists in the discussion of four reports developed within the practice time during the semester.
The reports must be delivered two days before discussion and the discussion can be done with the support of a Power Point presentation.

Programma definitivo per l'A.A.2009/10
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