Teachings

Select Academic Year:     2017/2018 2018/2019 2019/2020 2020/2021 2021/2022 2022/2023
Professor
ROBERTO BACCOLI (Tit.)
Period
First Semester
Teaching style
Teledidattica
Lingua Insegnamento

Informazioni aggiuntive

Course Curriculum CFU Length(h)
[70/89]  ELECTRICAL, ELECTRONIC AND COMPUTER ENGINEERING [89/40 - Ord. 2016]  ELETTRICA ON LINE 6 36

Objectives

This course is designed to provide the knowledges and skills respect to the following topics:
Theoretical aspects
What quantities, laws and principles define and influence a complex thermodynamic system?
The laws of the thermal radiation exchange.
The laws of the heat transfer, multidimensional, transient and steady-state conduction, convection and thermodynamic effects related to their interactions with the matter.
Fundamentals on Energy and Exergy analysis in order to get the basic concepts to evaluate efficiency and the energy performances for the energy conversion systems in all its forms.
Applied knowledge to be able :
1) to generate the right thermodynamic framework for the systems in exchange conditions of heat, radiation, work, and flow mass, as a result of the application of the thermodynamics principles;
2) to evaluate the conversion efficiency of the complex thermodynamic systems
3) to design materials respect to their thermo-technics proprieties in order to get specific thermodynamic condition under conduction, convection and radiation heat transfer.

Prerequisites

General Physics I and II:
Calculus I and II

Contents

INTRODUCTION TO THERMODYNAMICS:
Target and Topics of the Thermodynamics
Generalized Thermodynamic coordinates;
Definition of a thermodynamics system
Definition of the Exchange quantities: Mass, heat, radiation and work.
Simple and complex thermodynamic systems
Definition and proprieties of the ideal gas
HEAT TRANSFER AND THERMAL RADIATION
Fundamentals on heat transfer by conduction. The Fourier, Laplace and Poisson Laws
Fundamentals on heat transfer by convection. The Newton law, basic concept on thermal boundary layer. Free and forced convection, dimensional analysis and Buckingham theorem. Internal and external flow. The case of flat plate at zero incidence, a pipe at perpendicular incidence.
The black body irradiance, the Stephan-Boltzaman, Plank and Wien laws. Lambertian surfaces and carachteristics of irradiance of the actual surfaces: emissivity, reflectivity, absorptivity and transmissivity, monochromatic and complete. The radiation exchange between bodies: the electrical analogy by means the view factor.
Thermal exchange in the presence of combined mechanisms. Electrical Analogy between thermal flux and electrical flux: the thermal trasmittance.
THE LAWS OF THE THERMODYNAMICS (0th,1st,2nd,3rd laws )
The adiabatic work and the internal energy
The work conversion into heat and the heat conversion into work.
The 1st law of the thermodynamics:
The extension of the 1st law of the thermodynamics to the thermal radiation
First law equation for quasistatic and non quasistatic processes.
The pvt surface for a pure substance
Heat and work exchanges, internal energy and enthalpy changes respect to fundamental processes (adiabatic, isothermal, isobar and isovolumetric, polytropic process).
The Thermodynamics of an open system.
The first law of thermodynamics for an open system: some applications (Heat exchangers expander, nozzle, diffuser, lamination).
The heat conversion into work the 2nd law of the thermodynamics: the thermal engine and the refrigerator systems.
The ideal mono-source heat engine, the ideal bithermic heat engine and the economic principle. Statements of the 2nd law (Kelvin Plank, Clausius and the unicity of the quasistatic adiabatic process through a thermodynamic point).
Fundamental theorems:
equivalence of the 2nd law statements, Carnot theorem, thermodynamics themperature, Clausius theorem.
The Entropy quantity.
The entropy change for reversible and irreversibile processes. The entropy production principle. Exergy analysis.
Useful Thermodynamic charts
(T,s,) chart,
(h,s) chart,
(p,h) chart,
(T,h) chart,

Teaching Methods

The on-line teaching is composed by two components: the “front teaching” and the “interactive teaching”.
The “front teaching” is divided into 15 modules, each of them sub-divided into units lasting about 15 minutes. Each unit is organized in order ti fulfill the specific educational goal and can be constituted by: video lecture supported by slides, videos and animations; slides and videos mainly aiming to present application of the theory and examples; test with automatic check which will be useful for auto-evaluation by the students themselves.
The “interactive teaching” is the moment of a direct contact between the students and the teacher or the tutor by means of e-mails, forum, video-conferences.
All video-lectures and test are available on-line in an asynchronous manner by means of the most common devices (PC, tablets, smart-phone) and using the most common softwares (Explorer, Crome, Mozilla, etc).
Furthermore it is possible to download some specific material such as slides, tables, exercises.

Verification of learning

Final exam and Grading Method:
6 questions (in written form) that cover topics of the lecture, referred to:
2 questions about theoretical topics
4 exercises about application issues
A correct answer without work to justify it may not receive full credit.

Texts

"Heat and Thermodynamics " M.W Zemansky M.M. Abbott H.C. Van Hess Zanichelli
"Lezioni di Fisica Tecnica" Paolo Giuseppe Mura Cuec editore
"Principles of Heat Transfer " Frank Kreith Cengage learning "Termodinamica Applicata" Lino Mattarolo Cleup editrice
“Thermodynamics: An Engineering Approach”, Yunus A. Çengel, Michael A. Boles Mc Graw Hill