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Politecnico di Torino
Anno Accademico 2015/16
01NLGJM, 01NLGLI, 01NLGLX
Fundamentals of Engineering Thermodynamics and Heat Transfer
Corso di Laurea in Ingegneria Meccanica (Mechanical Engineering) - Torino
Corso di Laurea in Ingegneria Dell'Autoveicolo (Automotive Engineering) - Torino
Corso di Laurea in Ingegneria Elettrica - Torino
Docente Qualifica Settore Lez Es Lab Tut Anni incarico
Campagnoli Elena ORARIO RICEVIMENTO RC ING-IND/10 53 27 0 0 11
SSD CFU Attivita' formative Ambiti disciplinari
ING-IND/10
ING-IND/10
2
6
F - Altre attivitŗ (art. 10)
B - Caratterizzanti
Altre conoscenze utili per l'inserimento nel mondo del lavoro
Ingegneria meccanica
Esclusioni:
05IHQ
Presentazione
Understand: (i) The connections between the processes of the material systems and the energy exchanges. (ii) The fundamentals of elementary thermodynamics based on the first and the second law. (iii) How the theory of applied thermodynamics can be used to study energy conversions in power, propulsion and industrial processes. (iv) The fundamentals of the transfer of mechanical and thermal energy and radiation in solid and fluid systems applied to real systems, as heat exchangers.
Risultati di apprendimento attesi
Be able to: (i) Use the theory of applied thermodynamics to calculate the energy balance of closed and open systems, in steady state and transient processes. (ii) Recognize the principal gas and steam power systems and calculate in the ideal case energy transfers and efficiency. (iii) Know, from a phenomenological point of view the principle types of heat transfer processes, conduction, convection and radiation, and evaluate the quantitative connection between heat fluxes and properties of physical materials. (iv) Evaluate how heat transfer occurs in real devices as heat exchangers.
Prerequisiti / Conoscenze pregresse
Calculus. Linear algebra. Fundamentals of Differential Equations. Fundamentals of Physics I and II.
Programma
The course is subdivided into parts the first about Thermodynamics (about 2/3 of the course) and the second about Heat Transfer (about 1/3 of the course).

LECTURES TOPICS
Thermodynamics:
Introduction to thermodynamics: (8 h)
Definitions. Energy in a thermal system. Work and heat in thermodynamics. Actual and ideal processes. The first law of thermodynamics for closed and open systems. Thermodynamic cycles, efficiency.
Simple compressible systems: (6 h)
Water: 3D surface, single phase and two phases regions. Phase changes at constant pressure. Water tables.
The ideal gas: state equations and properties. Internal energy and enthalpy. Ideal gas characteristic processes: closed and open systems
The second law of thermodynamics for closed and open systems: (4 h)
Clausius and Kelvin-Planck statements. Main kinds of irreversibility. 1st and 2nd Carnot corollaries. Thermal efficiency and coefficients of performance. The Carnot ideal power cycle. Clausius inequality and entropy changes. The Gibbís equations. Second law of thermodynamics: closed and open systems. Isentropic efficiency: turbines and compressors. Work in an open system
Vapour power and refrigeration cycles: (4.5 h)
The ideal Rankine cycle. Actual vapour cycles: irreversibility and losses. Superheated and reheated vapour cycles. Regenerative vapour power cycles. Refrigeration vapour cycles: the p,h diagram.
Gas power and refrigeration cycles: (4.5 h)
Internal combustion engines: Otto and Diesel cycles. The ideal and actual Joule cycle. Regenerative Joule cycle. Gas refrigeration cycles
Psychrometry and air conditioning: (6 h)
Moist air properties. Psychrometric charts. Moist air processes. Air conditioning: sensible and latent loads. Air conditioning processes in winter and summer season

Heat Transfer
Conduction heat transfer: (7.5 h)
Fourierís law. Heat transfer equation. Boundary and initial conditions. Heat transfer by conduction at steady state: Cartesian and cylindrical coordinates. The electrical analogy. 1D conduction heat transfer with and without volumetric energy generation. Transient conduction: the lumped capacitance method. Finned surfaces.
Convection heat transfer and heat exchangers: (7.5 h)
Newtonís law. Boundary layer phenomena. Free and forced convection. Methods for estimating the convection coefficients. Heat exchangers simple configurations: parallel flow and counter flow heat exchangers. Rate of heat transfer and the mean log temperature difference method. The e-NTU method.
Heat transfer by radiation: (5 h)
Spectral and total quantities: emissive power, irradiation and radiosity. Black body properties: Planckís distribution, Stefan Boltzmannís law. Gray bodies properties. The electrical analogy: space and surface resistances. Rate of heat transfer for both black and gray bodies.
Organizzazione dell'insegnamento
The course is organized in theoretical and applied lectures( to learn to solve exercises that apply the subjects dealt with in lessons) and laboratory experiments. Exercises will be proposed to learn to solve problems that apply the subjects dealt with in lessons (about 27 h). Some of them will be solved during the class while the remainder may be solved as homework (solutions are anyway provided).
Testi richiesti o raccomandati: letture, dispense, altro materiale didattico
M. W. Zemansky, M.M. Abbott, H.C. Van Ness, "Basic engineering thermodynamics", Mc Graw Hill
M.J. Moran, H.N. Shapiro, 'Fundamentals of engineering Thermodynamics', J. Wiley & Sons, Inc., 2006.
P.S. Schmidt, O.A. Ezekoye, J.R. Howell, D.K. Baker, 'Thermodynamics: An Integrated Learning System', J. Wiley & Sons, Inc., 2006.
F.P. Incropera, D.P. De Witt, 'Fundamentals of Heat and Mass Transfer', J. Wiley & Sons, Inc
Y. A. «engel, 'Introduction to thermodynamics and heat transfer", 2nd Edition, McGraw-Hill, 2008.
M.J. Moran, H.N. Shapiro, B.R. Munson, D.P. DeWitt, 'Introduction to Thermal Systems Engineering, Thermodynamics, Fluid Mechanics and Heat Transfer', J. Wiley & Sons, Inc., 2003.
Criteri, regole e procedure per l'esame
The exam is composed by a written test and an oral. The written test (2 hours) consists in solving four problems (2 exercises about Thermodynamics and 2 exercises about Heat Transfer). The oral is about the main topics of the course. Both of them are compulsory and to be admitted to take the oral you must get at least 18/30 during the written exam. The final grade will be the average of the marks youíve got in the written and oral exams.
Orario delle lezioni
Statistiche superamento esami

Programma definitivo per l'A.A.2015/16
Indietro



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