


Politecnico di Torino  
Academic Year 2007/08  
01CVUBK Thermodynamics and thermokinetics 

1st degree and Bachelorlevel of the Bologna process in Automotive Engineering  Torino 





Objectives of the course
The thermodynamics are presented in the form of its suitability for use, explaining the two principles (introduced by Physics) for one
dimensional open system at a constant speed. The thermokinetics supplies the fundamentals of the heat transmission with the necessary references to the motion of the fluids. 
Expected skills
To know the types of systems examined, to be able apply the 1° and 2° simple system principles. Utilise the Clapeyron, Gibbs and
Collier charts for describing and calculating the thermodynamic cycle principles, engines and inversions, by gas and by steam. To know, from a phenomilogical point of view the principle mechanisms of the transmission of heat, evaluating when they act seperately and when they act in series or parallel to the heat exchangers. 
Prerequisites
Experimental physics I and II, Fluid Mechanics.

Syllabus
Credit 1
Definition of the principal concepts of the thermodynamics used. Systems, states, transformation, work and heat. Principle of the conversion of energy for closed systems and one dimensional open systems. Internal energy and enthalpy. Clapeyron's Chart. Credit 2 Second principle of thermodynamics, entropy, irreversibility, energy usable from heat, for open and closed systems. Gibbs Chart. Ideal gases, ideal direct cycles (Otto, Joule and Diesel), regenerations. Credit 3 Vapours and their properties, Mollier's chart, ideal Rankine cycle, regenerations, combined cycles. JouleThomson effect. Real gases. Inverse cycles, refrigeration and heat pumps. Phenomenological descriptions of thermal energy; thermal resistances. Credit 4 Thermal conduction, Fourier's law, conductivity, conductivity resistance. Heating of a body with a marginal internal resistance. Distribution of heat in flat and cylindrical geometry, critical radius of thermal isolation. Thermal convection, Newton's law, exchange ratio, resistance to convection. Natural and forced convection, use of the formula of the dimensional analysis. Credit 5 Thermal exchange for irradiation, black body, StefanBoltznam's law, shape factors, emissivity. Coefficiency of linear thermal exchange. Exchange between two environments at an imposed temperature, global coefficiency of thermal exchange, global resistance, electrical analogy. Exchangers of parrallel current heat, logarithmic average of temperature difference. 
Laboratories and/or exercises
Training is scheduled in the classroom with exercises and illustrated calculations on the subjects dealt with in lessons. In training of an
experimental character, some typical thermodynamic systems will be examined and analysed. Didactic material Taking of notes at the lessons. Material distributed during the course. Exam procedure The exam consists of an oral test on the subjects covered in the lessons and on the practical activities carried out in training and workshops. 
