Chemical Engineering

PART I: Electrical circuits Analysis of Stationary Regime Electricity Networks - Characteristics of the fundamental two-poles (resistor, ideal short circuit, ideal open circuit, ideal voltage generator, ideal current generator) - Agreements on bipoles (user and generator agreement) - Kirchhoff's laws - Tellegen's method of conservation of power - Real voltage and current generators - Generalized Ohm's law - Equivalent resistance - Triangle-star transformations - Effects overlay - Thevenin's theorem - Condition of fit - Mesh current method - Nodal potential method - Notes on measurements (ammeter, voltmeter, wattmeter) Sinusoidal Periodic Regime - Symbolic method - Fundamental two-port R, L, C, RL series, RC series, RLC series - Instant power - Active power - Reactive power - Apparent power - Complex potency - Conservation of power theorem - Analysis methods of electrical networks (mesh currents and nodal potentials) - Power factor correction Three-phase networks - Symmetrical and balanced systems - Equivalent single-phase circuit - Star or delta load - Star point potential - Powers - Power factor correction - Measurement of power in three-phase and four-wire networks - Symmetrical and unbalanced systems PART II: Principles of Operation of Electric Machines - Magnetic circuits - Hysteresis - Parasitic currents - The electromechanical conversion of energy - Rotating magnetic field Transformer - Ideal transformer and equivalent circuit - Equivalent circuit of the real transformer - No load and short circuit test - Plate data - Voltage variation - Three-phase transformer - Connection of the windings - Transformation ratio - Time group - Plate data Asynchronous motor - Construction characteristics of the three-phase asynchronous motor - Equivalent circuit of three-phase asynchronous motor - Torque and mechanical characteristic - Goodwill - Meaning of the plate data Notes on the Synchronous Generator - Construction characteristics of the synchronous generator (smooth rotor and rotor with salient poles) - Principle of operation - Equivalent circuit - Ben-Eschemburgh diagram PART III: The electrical systems Electric lines - Overhead and cable power lines - Equivalent electric circuit - Voltage drop - Sizing of the conductors of the distribution lines Elements of Electrical Installations - Generation, transmission and distribution of energy - Switching and protection devices: switch, contactor, disconnector and fuse - Overvoltage protection devices: surge arresters and varistors - Magnetic, thermal, magneto-thermal and differential relays - Notes on TT, TN, and TN-S plants Elements of Electrical Safety - Effects of current on the human body - Direct and indirect contacts - Protection against indirect contact - Earth systems: earth electrodes, earth resistance, step voltage - Regulations

The contents of the course "FISICA II" are indispensable knowledge

Appunti di Elettrotecnica, vol. I, Saverio Cristina, Ed. Esculapio Elettrotecnica volume 2: Applicazioni di Guarnieri, Gnesotto, Chitarin, Ed. Esculapio

The evaluation consists of a written test concerning the first part of the course. Students who pass the written test are admitted to the oral test which concerns the second and third parts of the programme. The final grade is the result of the average of the grades reported in the two tests.

The course is delivered in the second semester of the third year