70/0055-M - ENGINEERING PHYSICS
Academic Year 2017/2018
Free text for the University
ROBERTO BACCOLI (Tit.)
- Teaching style
- Lingua Insegnamento
|[70/89] ELECTRICAL, ELECTRONIC AND COMPUTER ENGINEERING||[89/10 - Ord. 2016] ELETTRICA||6||60|
This course is designed to provide the knowledges and skills respect to the following topics:
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.
General Physics I and II:
Calculus I and II
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).
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
INTRODUCTION TO THERMODYNAMICS(theory: 4 hours, exercises: 1 hour)
HEAT AND thermal RADIATION (theory: 8 hours, exercises 6 hours)
THE FIRST LAW OF THERMODYNAMICS FOR CLOSED SYSTEMS (WITHOUT FLOW) (theory: 9 hours, exercises: 4 hours)
THERMODYNAMICS OF OPEN SYTEM (theory: 4 hours, exercises 2 hours)
CONVERSION OF HEAT INTO WORK: THE 2nd LAW OF THERMODYNAMICS, THERMAL ENIGINES AND REFRIGERATOR SYSTEM: 5 hours, exercises 2 hours)
FUNDAMENTAL THEOREMS - (theory: 4 hours, exercises 1 hours)
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
"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,