Introduction

Overview of energy sources, energy conversion systems, national and world energy needs.
Analysis of energy conversion systems based on 1st and 2nd Law of Thermodynamics. Thermodynamic cycles: external and internal irreversibilities, definition of Rankine-Hirn and Joule-Brayton cycles.

Steam power plants

Analysis of ideal and real thermodynamic cycles. Choice of operating parameters and techniques to improve plant’s efficiency: steam reheating, regenerative feed heating. Plant layouts.

Gas turbine power plants

Analysis of ideal and real thermodynamic cycles. Choice of operating parameters and techniques to improve plant’s efficiency: regenerative heat exchanger, reheaters, intercoolers. Plant layout of heavy-duty and aeroderivative turbines.

Combined cycle power plants

Analysis of “topping” (gas turbine) and “bottoming” sections, efficiency, power ratio between gas and steam turbine, plant layout. Thermodynamic optimization of bottoming sections with variable temperature heat input.

Internal combustion reciprocating engines

Cycle analysis with ideal gas working fluid; fuel-air cycle analysis; real engine cycles; power output, mechanical efficiency, volumetric efficiency and engine operating parameters; correction factors for power and volumetric efficiency; engine operating characteristics.

Hydroelectric power generation

Hydraulic turbines: classification, operating parameters, performance characteristics, cavitation.
Hydroelectric plant layouts. Pumped storage hydroelectricity.

Syllabus

Goal of the course: The goal of the course is to give the students the basic knowledge of the principles of operation of machinery components (such as pumps, compressors and turbines), having provided the details of deriving and applying the fluid-dynamics equations (mass, momentum and energy).

COURSE SYLLABUS

Introduction
Classification of machines. Turbines, compressors, volumetric, rotary machines and their applications to industrial practical cases. Analysis of performance: power, work, efficiency.
Basics of fluid dynamics
Material and spatial description of the flow field. Translation, deformation and rotation. Reynolds’ transport theorem.
Differential balances in turbomachinery (mass, momentum, thermal and mechanical energy) in stationary and rotating frames of references. Entropy balance. Phenomenological description of turbulence and intermittency in turbomachinery, and basic description of Reynolds Average Navier Stokes (RANS) equations.
Integral balances in turbomachinery (mass, momentum, moment of momentum, energy) and application to basic components.
Flow at high subsonic and transonic Mach numbers (density and cross-section changes, normal and oblique shock waves, detached shock waves).
Theory of turbomachinery stages
General treatment of turbine and compressor stages, dimensionless parameters, degree of reaction and its effect on stage configuration. Stage load coefficient and effect on power. Unified description of a turbomachinery stage, special cases.
Turbine and compressor cascade flow forces.
Blade forces in inviscid and viscous flow fields. Effect of solidity on blade profile losses, relationship between profile loss coefficient and drag. Optimum solidity, generalized lift-solidity coefficient: turbine stator and rotor.
Efficiency of multi-stage turbomachines.
Polytropic efficiency. Isentropic turbine efficiency, recovery factor. Compressor efficiency, reheat factor. Comparison of polytropic and isentropic efficiency.
Volumetric machines.
Piston pumps and compressors: energy analysis, indicated diagrams, volumetric efficiency, multistage machines. Rotary pumps and compressors.
Application to practical cases
Pumps and compressors: operating maps, external circuit characteristic curves, flow control. Cavitation in pumps. Basic aerodynamic analysis of wind turbines: actuator disc analysis, Betz limit, basics of blade design. Hydraulic turbines: classification, dimensionless analysis. Basics of hydraulic turbine design: head, flow rate, degree of reaction.

Manufacturing Technologies

Fundamentals of materials: structure of metals, mechanical behavior, material testing, physical properties, heat treatment.

Manufacturing of metals: fundamental of metal-casting, metal-casting processes and equipment, bulk forming (rolling, forging, extrusion and drawing), sheet-metal forming, sintering, fundamentals of machining, cutting-tools, machining processes (turning, drilling, milling).

Manufacturing of plastics and composites: structure and properties of polymers, properties and applications of composite materials, forming and shaping of plastics, processing composite materials.

Joining processes and advanced machining: fusion-welding, solid-state welding, adhesive-bonding, fastening, laser-beam machining, electron-beam machining, water jet and abrasive water-jet machining, electrical-discharge machining.

General concepts related to the use of measuring instruments, in the laboratory
(multimeter, power supply, signal generator, oscilloscope).
Compensated probes and breadboard.
Synthesis of the BJT bias networks.
BJT current sources.
Synthesis of small-signal amplifiers.
Concepts related to the power amplifiers, class A, B and AB.
Concepts related to sinusoidal oscillators.
Structure and operation of operational amplifiers and their applications.
Structure and operation of voltage regulators and their applications.
Structure and operation of timers and their applications.

Experiences:
RC, RL and RCL circuits.
Diode circuits: rectifiers, limiters, clamper, voltage doublers, capacitive rectifiers.
BJT Bias.
Emitter and collector common configuration
Phase-Splitter.
BJT differential amplifier with emitter coupled.
Power amplifiers in class A, B and AB
Current source.
Inverting and non-inverting amplifier realized with operational amplifiers.
Integrator and differentiator realized with operational amplifiers.
Comparator, comparator with hysteresis, generator of square waveform.
Linear voltage regulator.
Integrated 555 in monostable configuration.
Integrated 555 in astable configuration.
Wien bridge oscillator.
LC oscillator.

Electrons in solids; Semiconductors;

Charge transport models; Non uniform doping distributions;

Metal-Semiconductor Junction; Generation and recombination processes;

PN junction; devices with a negative differential resistance;

Bipolar Junction Transistor; Heterojunction bipolar transistor;

Metal-oxide-semiconductor system;

Metal Oxide Semiconductor Transistor, MESFEt and HEMT.

Introduction to sensor;

Circuits for resistive and capacitive sensors;

Temperature sensors: thermistors, thermoelectric effects;

Magnetic field sensors: Hall probes, magnetoresistances, fluxgate magnetometer;

Optical sensors; Matter-radiation interaction; Black body radiation;

Photoconductors and Photodiodes; Photomultiplier; Image detectors;

IR sensors: bolometers and piroelectric effect;

Mechanical sensors: position, strain gauges, accelerometers, gyroscope, pressure sensors, flow meters, micro electro mechanical systems.

INTRODUCTION

The theory of transmission lines. Definition and properties of scattering parameters. Impedance matching techniques. Rectangular and coaxial waveguides, microstrip and coplanar lines. Overview of hybrid and monolithic microwave integrated circuits.

HIGH FREQUENCY ACTIVE TWO PORT NETWORKS

Stability of two-port networks and microwave oscillators.
Basic principles of linear microwave amplifiers.
Non linear effects in high frequency amplifiers.

HIGH FREQUENCY PASSIVE COMPONENTS AND CIRCUITS

Modeling of coupled transmission lines and design of directional couplers.
Branch-line, rat-race and Wilkinson dividers.
SPST switches, SPDT switches, and basic principles of microwave phase shifters.
Low-pass and band-pass microwave planar filters.

1.Basic definitions and relations

Definitions of electric and magnetic field. Maxwell equations. Medium parameters. Source currents. Duality. Boundary conditions. Conditions for normal components. Conditions for tangential components.

 2. Energy balance

The Poynting theorem. Application to harmonic sources.

 3. Fields in the frequency domain.

Complex notations. Polarization of a vector. Polarization parameters. The dielectric permittivity in the frequency domain. Conducting media. The conductivity in the frequency domain. Conductivity and dielectric permittivity. 

 4. Relations in the frequency domain

Maxwell equations in the frequency domain. Energy balance in the frequency domain.

 5. Propagation

Wave equations in a weakly inhomogeneous medium. Fields in lossless weakly inhomogeneous media. Propagation. Relation between fields and propagation direction. Electromagnetic rays. Fermat principle and path length.

 6. Plane waves

Waves in uniform media. Plane waves in a uniform media. Relation between fields and propagation direction. Secondary parameters. Propagation constant. Intrinsic impedance.

 7. Reflection and refraction of plane waves.

Normal incidence. Dielectric materials. Lossy materials. Slanting incidence.

 8. Potentials and elements of guided propagation. Transmission lines. Coaxial cables, rectangular waveguides, circular waveguides.

 9. The electromagnetic radiation.

The electromagnetic field of an elementary source. Far field.

 10. General properties of antennas

Radiation parameters. Radiation pattern. Directivity and gain. Receiving antennas. Effective area. Link between effective area and directivity. Transmission between antennas.

 11. The electromagnetic risk and safety rules

The environmental electromagnetic field: natural and men made. Terrestrial and extra terrestrial electromagnetic fields. Exposure to electromagnetic fields: in the environment, in residential places, in working places. Effects of electromagnetic fields on living bodies. Difficulty of the problem. Macroscopic and thermal effects on cells.  Effects on the behavior. Safety rules. 

Objectives
The goal of the course is to provide the fundamental knowledge to understand the current networking technologies and the ongoing trends: Local Area Networks and Wide Area Networks, Ethernet, TCP/IP, Internet architecture. The course will also introduce the performance aspects, as needed for the design and engineering of telecommunication networks.
Content
Classification of network: LAN vs WAN, data networks vs. circuit networks. Network topologies, services and functions. Multiplexing and switching. Packet switching vs. Circuit switching. Layering of networks functions. The TCP/IP model and architecture. The Application Layer (HTTP, DNS, socket programming). The Transport Layer (TCP, UDP). The Network Layer, IPv4 and IPv6. IP addressing and private networks. IP routing. Local Area Networks, ARP, DHCP. The Ethernet technology.
Performance evaluation of networks. Basic queueing models for packet networks and circuit networks.

Reference book:
James F. Kurose, Keith W. Ross, “Computer Networking: A Top-Down Approach”, 6th Edition

Deterministic continuous-time signals

Introduction, definition of signals, ideal transmission of signals, time domain signals, complex notation, Dirac impulse, energy and power. Affinity: cross correlation and autocorrelation. Time domain series representation of signals. Representation in the signal domain. Fourier transform. Affinity for frequency represented signals, energy and power spectrum, sampling theorem. Analytic signal and complex envelope.  Multilevel source signals, binary signals, synchronous and asynchronous signals. Linear transformations. Fundamentals of transmission.

Multiplexing, analogue digital conversion, basics on channel coding, basics on modulation.

Time continuous random variables and stochastic processes

Random variables theory, probability distribution and density functions, conditional probability distribution. Expected value, variance and covariance. Conditional density functions, complex random variables. Stochastic processes. Classification, spectral theory, transformation of stochastic processes. The Gaussian process.

Stationary processes, ciclostationary processes, processes represented by the complex envelope, stationary process not in base band, processes represented in time series, real processes with random factors, processes sampled in base band, complex processes with random factors. Gaussian processes. Markov processes: properties, continuous and discrete time.

Imperfect transmission

Imperfect connection. Imperfect transmission over non linear channel. Imperfect transmission with independent disturbs.

Power analysis of a transmission system. Noisy linear two port systems. Receiver sensitivity.

Signals utilized in transmission systems

Harmonic signals modulation. Analogue harmonic modulation. Amplitude modulations (AM). Angle modulations: phase (PM) and frequency (FM). Performance analysis of harmonic modulation systems.

Signals lab

Introduction to Matlab and its use to graphically represent signals. Operations among signals. Study of signal properties (energy and power) and correlations.