CODE 72371 2023/2024 6 cfu anno 2 INGEGNERIA MECCANICA 8784 (L-9) - LA SPEZIA ING-IND/10 Italian LA SPEZIA 1° Semester Questo insegnamento è un modulo di: AULAWEB

## AIMS AND CONTENT

### LEARNING OUTCOMES

In the first part of the course provides basic knowledge on applied thermodynamics. Introduced the first and second law of thermodynamics, thermodynamic diagrams for gases and vapors; direct and inverse thermodynamic cycles; .principles of air conditioning.

### AIMS AND LEARNING OUTCOMES

See Fisica Tecnica (cod. 72369).

### TEACHING METHODS

The course consists in theoretical lectures and numerical practices.

### SYLLABUS/CONTENT

FLUID STATICS RECAP

Pressure. Density and specific volume. Pressure in a quiescent fluid. Pascal's principle. Differential manometers. Archimedes' principle.

THERMODYNAMICS

Thermodynamic systems, state variables, thermodynamic transformations of a closed system.
Operational definition of temperature. Absolute temperature scale. Ideal gases and mixtures of ideal gases.
Mechanical work: evaluation of mechanical work and exchange of work in reversible transformations. Mechanical power.
Operational definition of heat quantity: Bunsen calorimeter, Mayer's equivalence law. Heat flow.
First law of thermodynamics for closed systems: flow system, analytical interpretation of experimental evidence, statement of the first law of thermodynamics for a closed system. Internal energy function and specific heat at constant volume.
Principle of conservation of mass and energy. Continuity equation and first law of thermodynamics for steady-state open systems. Enthalpy function and specific heat at constant pressure.
Internal energy and enthalpy of incompressible substances. Internal energy and enthalpy of ideal gases. Reversible transformations of ideal gases on the p-v plane.

Pure substances: state diagrams, liquid-vapor phase transition, vapor quality, internal energy, enthalpy, and entropy of pure substances, thermodynamic planes, brief introduction to solid-vapor and solid-liquid phase transitions, latent heat of phase transition.

Second law of thermodynamics for closed systems: thermal source, heat engine, Clausius inequality, Kelvin-Planck statement, Clausius statement, thermodynamic footprint, entropy as a state function, heat exchange in reversible transformations, equations of general validity.

Entropy of incompressible substances.

Entropy of ideal gases.

Transformations of fluids on the thermodynamic planes.

Direct thermodynamic cycles

Reversed vapor compression cycle, refrigeration COP and heat pump, brief introduction to refrigerants.
Energy equation in mechanical terms. Bernoulli's equation. Distributed pressure losses. Concentrated pressure losses. Pump pressure head. Converging and diverging channels. Pump and turbine efficiency, closed circuit.

See Fisica Tecnica (cod. 72639)

## TEACHERS AND EXAM BOARD

### Exam Board

GUGLIELMO LOMONACO (President)

FRANCESCO DEVIA

GIOVANNI TANDA

ANNA CHIARI (President Substitute)

ANNALISA MARCHITTO (President Substitute)

## LESSONS

### LESSONS START

https://corsi.unige.it/8784/p/studenti-orario

### Class schedule

The timetable for this course is available here: Portale EasyAcademy

## EXAMS

### EXAM DESCRIPTION

At the end of the classes, during the winter session, it is possible to take the written and oral partial exam on the module. As for the exam procedures for the partial exams, see the ones specified for the full final exam (see sheet 72369 – Fisica Tecnica).

### ASSESSMENT METHODS

As for the evaluation of partial exams, the same criteria specified for the final exam apply (see sheet 72369 – Fisica Tecnica).

### Exam schedule

Data Ora Luogo Degree type Note
10/01/2024 10:00 LA SPEZIA Scritto + Orale La data della prova orale viene comunicata in sede di scritto.
23/01/2024 10:00 LA SPEZIA Scritto + Orale La data della prova orale viene comunicata in sede di scritto.
06/02/2024 10:00 LA SPEZIA Scritto + Orale La data della prova orale viene comunicata in sede di scritto.
26/03/2024 10:00 LA SPEZIA Scritto + Orale La data della prova orale viene comunicata in sede di scritto.
28/05/2024 10:00 LA SPEZIA Scritto + Orale La data della prova orale viene comunicata in sede di scritto.
17/06/2024 10:00 LA SPEZIA Scritto + Orale La data della prova orale viene comunicata in sede di scritto.
09/07/2024 10:00 LA SPEZIA Scritto + Orale La data della prova orale viene comunicata in sede di scritto.
10/09/2024 10:00 LA SPEZIA Scritto + Orale La data della prova orale viene comunicata in sede di scritto.