# APPLIED THERMODYNAMICS AND HEAT TRANSFER

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- Versione italiana
- Academic year
- 2022/2023
- Teacher
- GIOVANNI CASANO
- Credits
- 12
- Didactic period
- Secondo Semestre
- SSD
- ING-IND/10

#### Training objectives

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Modulo: 50233 - FISICA TECNICA A

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Applied thermodynamics and Heat transfer is the science of the relationship between heat, work, and systems that analyze energy processes. The energy processes that convert heat energy from available sources such as chemical fuels into mechanical work are the major concern of this science. The course consists of two parts: Applied Thermodynamics and Heat Transfer.

The main knowledge acquired will be related to:

- processes that transform heat into work from available sources, such as chemical fuels;

- the analytical and theoretical methods that can be applied to energy conversion machines;

- the analytical methods and models that allow to predict the heat exchange between corps.

The main skills (i.e. the ability to apply the knowledge acquired) will be:

- resolution of energy balance problems of closed and open systems;

- thermodynamic sizing of steam, refrigeration and gas cycles;

- representation of the thermodynamic processes on the main diagrams (p / v, T / s, h / s, p / h, T / h);

- evaluation of the appropriate solutions in the problems in which the reduction or increase of the heat transfer is required;

- ability to calculate the thermal power acquired or dissipated by the corps in the different heat transfer modes.

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Modulo: 50253 - FISICA TECNICA B

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Applied thermodynamics and Heat transfer is the science of the relationship between heat, work, and systems that analyze energy processes. The energy processes that convert heat energy from available sources such as chemical fuels into mechanical work are the major concern of this science. The course consists of two parts: Applied Thermodynamics and Heat Transfer.

The main knowledge acquired will be related to:

- processes that transform heat into work from available sources, such as chemical fuels;

- the analytical and theoretical methods that can be applied to energy conversion machines;

- the analytical methods and models that allow to predict the heat exchange between corps.

The main skills (i.e. the ability to apply the knowledge acquired) will be:

- resolution of energy balance problems of closed and open systems;

- thermodynamic sizing of steam, refrigeration and gas cycles;

- representation of the thermodynamic processes on the main diagrams (p / v, T / s, h / s, p / h, T / h);

- evaluation of the appropriate solutions in the problems in which the reduction or increase of the heat transfer is required;

- ability to calculate the thermal power acquired or dissipated by the corps in the different heat transfer modes. #### Prerequisites

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Modulo: 50233 - FISICA TECNICA A

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Basic knowledge in Mathematics and Physics

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Modulo: 50253 - FISICA TECNICA B

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Basic knowledge in Mathematics and Physics #### Course programme

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Modulo: 50233 - FISICA TECNICA A

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1. Applied Thermodynamics: Definitions and basic concepts.

2. The first law of thermodynamics.

3. The second law of thermodynamics. Reversibility and irreversibility.

4. Open systems. Mass, energy and entropy balances for open systems.

5. Properties of pure substances.

6. Compressed liquids.

7. Saturated liquid - vapour mixture.

8. Superheated vapour.

9. Ideal gas.

10. Real gas.

11. Thermodynamic diagrams.

12. Power cycles. Refrigeration cycles.

13. Otto cycle. Diesel cycle.

14. Pressure drop and mass flow rate measurement.

15. Compressible flows.

16. Gas mixtures. Ideal gases mixtures.

17. Psycrometrics.

18. Conduction heat transfer. Fourier law. Fourier equation.

19. Convection heat transfer. Natural convection. Forced. convection.

20. Radiative heat trensfer.

21. Total heat transfer coefficient.

22. Heat exchangers. Logaritmic mean temperature.

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Modulo: 50253 - FISICA TECNICA B

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1. Applied Thermodynamics: Definitions and basic concepts.

2. The first law of thermodynamics.

3. The second law of thermodynamics. Reversibility and irreversibility.

4. Open systems. Mass, energy and entropy balances for open systems.

5. Properties of pure substances.

6. Compressed liquids.

7. Saturated liquid - vapour mixture.

8. Superheated vapour.

9. Ideal gas.

10. Real gas.

11. Thermodynamic diagrams.

12. Power cycles. Refrigeration cycles.

13. Otto cycle. Diesel cycle.

14. Pressure drop and mass flow rate measurement.

15. Compressible flows.

16. Gas mixtures. Ideal gases mixtures.

17. Psycrometrics.

18. Conduction heat transfer. Fourier law. Fourier equation.

19. Convection heat transfer. Natural convection. Forced. convection.

20. Radiative heat trensfer.

21. Total heat transfer coefficient.

22. Heat exchangers. Logaritmic mean temperature. #### Didactic methods

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Modulo: 50233 - FISICA TECNICA A

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Theoretical lessons: demonstrations and practical applications.

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Modulo: 50253 - FISICA TECNICA B

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Theoretical lessons: demonstrations and practical applications. #### Learning assessment procedures

- At the end of the course an oral final examination is done. The topics are those discussed during the course.

Passing the final exam is the proof that knowledge and abilities outlined in the training objectives of the course have been achieved. Oral examination. If a blackboard is available, it will be held at the blackboard; if the blackboard is not available or the number of blackboards is not enough, the student will used a paper sheet as the blackboard. The examination consists of three questions; it is necessary to obtain 18/30 for each question; on the contrary it is necessary to repeat the whole examination. As the first step an application of fluid flow and/or heat transfer and/or psycrometrics (topics 14-21) is discussed. As the second step an application of applied thermodynamics (topics 1-13) is discussed. Finally a theoretical arguments is discussed (topics 1-21).

In the event that the exam is conducted remotely, the candidate will be

asked three questions: a first question, common to all, concerns a short

exercise or theoretical explanation on the entire program; if the answer

is sufficient, we move on to a theory question on part A and one on part

B, to which the student must answer orally with the help of a blank

sheet on which to write the relative formulas, as if it were on the

blackboard. The exam is passed if all three questions are sufficient,

and the final mark is calculated as the arithmetic average of the marks

of the three questions. #### Reference texts

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Modulo: 50233 - FISICA TECNICA A

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A. Cocchi, Elementi di Termofisica Generale e Applicata, Società Editrice Esculapio (BO).

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Modulo: 50253 - FISICA TECNICA B

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A. Cocchi, Elementi di Termofisica Generale e Applicata, Società Editrice Esculapio (BO).