Fisica Tecnica (MECC) (A/L)
Engineering Physics Fabio Polonara
Basic knowledge of Calculus, Mechanics, Electricity and Magnetism.
KNOWLEDGE AND UNDERSTANDING:
Students will learn the fundamentals of applied thermodynamics and heat transfer. Together with the fundamentals in mathematics and physics, this course will increase the knowledge in the fields of thermofluid-dynamics, fluid machines and energy systems giving to the student the awareness of the multidisciplinary context of engineering with particular focus on the issues related to the conversion, transmission, final use of energy and to the design of fluid machines and energy systems.CAPACITY TO APPLY KNOWLEDGE AND UNDERSTANDING:
Aiming at applying the fundamentals of applied physics in the industrial sector, students must be able to perform analysis of components and basic energy systems in order to assess both the energy performance of fluid machines and the best technical solutions according to the operating context. The main skills acquired in the course are: 1. ability to perform first law analyses on components and on systems operating on direct and reverse thermodynamic cycles; 2. ability to perform heat transfer analyses on simple systems operating at steady state with the method of thermal resistance.TRANSVERSAL SKILLS:
The ability of solving numerical problems, together with the awareness of their knowledge, will improve the judgement autonomy of students, their communications skills and their learning ability.
Class lectures contents (54 hours): Introduction to thermodynamics. Basics of thermometry. State thermodynamics. Thermodynamics charts. Vapours, ideal gas, incompressible substances. First law of thermodynamics for closed and open systems. Application of first law to simple system components. Second law of thermodynamics. Clausius and Kelvin postulates. Direct and reverse thermodynamic cycles. Direct and reverse Carnot cycle. Entropy. Vapour and gas direct thermodynamic cycles. Vapour compression reverse thermodynamic cycle. Psycrometrics. Heat transfer mechanisms. Steady state conduction. Electric analogy and resistive model. Thermal convection. Flow regimes. Dimensionless numbers and correlations for practical use. Thermal radiation. Black-body and real-surfaces radiation. Heat transfer between black bodies, grey bodies within cavities. Heat transfer combined mechanisms. Walls transmittance. Heat exchargers.
Class exercises (18 hours): numerical exercises related to technological applications learned during the course.
Development of the examination
LEARNING EVALUATION METHODS
The assessment of the learning level consists of a written test divided into two parts: in the first part, the student must solve 4 numerical exercises relating to technological applications that have been discussed in class. In the second part, the student must answer 4 questions on theoretical topics chosen amongst those discussed in class. The time available for the test as a whole is 120 minutes. After this first test, the student who has obtained a mark has to pass an oral test in which the topics covered in class will be discussed.
LEARNING EVALUATION CRITERIA
To successfully pass the exam, the student must demonstrate, through the tests described above, to have assimilated the concepts contained in the syllabus and to be able to properly solve numerical exercises related to technological applications learned during the course.
LEARNING MEASUREMENT CRITERIA
The 4 numerical exercises are evaluated with a maximum total score of 60 points out of 100 (each exercise is given a maximum score of between 10 and 20 points, with a total of 60). The 4 theoretical questions are evaluated with a maximum total score of 40 points out of 100 (each question is given a maximum score of 10).
FINAL MARK ALLOCATION CRITERIA
The vote in hundredths, obtained by adding the vote gained in any exercise and theoretical question, is converted in thirthyeths. To proceed to the oral test (in the same session or in a later session) a minimum score of 14/30 is required. The final vote is a weighted mean of the vote in the written test (weight 70) and in the oral test (weight 30). The "Lode" is given to those who, in addition to achieving the maximum score on the test, demonstrate to master very well the subject.
Y.A.Çengel , Termodinamica e trasmissione del Calore, (Terza edizione), McGraw-Hill, 2009 - Cesini, Latini, Polonara, Fisica Tecnica, CittàStudi, 2016
- Ingegneria Meccanica (Corso di Laurea Triennale (DM 270/04))