Degree in
"Construction Engineering" - L 23 - 2nd year

Program of the course of:

TECHNICAL PHYSICS CFU: 9 SSD: ING-IND / 11 A.A. 20018/19

Prof. Paolo ZAZZINI

Introduction
Measurement Units systems: fundamental and derived quantities, conversion factors, measurement of physical quantities, conversions between the various measurement units systems.

Thermodynamics
Open and closed thermodynamic systems, thermodynamic equilibrium, extensive and intensive properties, state and exchange physical properties.
Total energy and internal energy of a system, temperature, specific heat, thermal capacity of a thermodynamic system.
Balance of mass and energy, I Principle of Thermodynamics for closed and open systems, enthalpy of a system, pressure-volume diagram, isobar transformations, isocore, isotherm, adiabatic, politropic.
II Principle of Thermodynamics: Clausius and Kelvin-Planck statements, thermodynamic cycles, the direct and inverse Carnot cycle, thermal and refrigeration machines, heat pumps, thermodynamic cycles: Rankine cycle and Brayton cycle, entropy, temperature-entropy diagram.
Pure substances, changes in state, properties of vapors and liquids, pressure-temperature diagram, notable points, the triple point.
The perfect gases: I and II state law, internal energy and enthalpy of a perfect gas; thermodynamic transformations of perfect gases.
Moist air: thermodynamic properties, psychrometric diagram, heating and sensible cooling transformations, humidification and dehumidification, adiabatic mixing; dew temperature, wet bulb and adiabatic saturation, the psychrometer.

Heat transmission
Fundamental heat exchange mechanisms: conduction, convection and radiation;
Thermal conduction: Fourier postulate, thermal conductivity.
One-dimensional stationary system: flat wall, cylindrical wall, conductance, resistance, temperature trend within a flat wall and in the thickness of a hollow cylinder; composite structures: multilayer flat wall, series and parallel resistances, coaxial cylinders, critical insulation thickness.

Thermal convection: Newton's law, average coefficient of convective heat exchange, natural convection and forced convection, laminar flow and turbulent flow, number of of Nusselt, Reynolds, Prandtl and Grashof.

Thermal radiation:
Radiant energy, the black body, emissive power, emission laws of the black body of Planck, Stephan-Boltzmann and Wien, radiative heat exchange equations for black bodies, gray bodies, emissivity, radiative exchange equations for gray bodies , greenhouse effect; radiative heat exchange in cavities between black surfaces.

Combined heat exchange mechanisms for multilayer flat walls: thermal transmittance and thermal resistance of a wall, thermal behavior inside a multilayer wall; surface condensation, interstitial condensation, Glaser method.

DIDACTIC MATERIALS:

Y. A. Cengel, THERMODYNAMICS AND HEAT TRANSFER, MC GRAW Hill Libri Italia;
G. Guglielmini, C. Pisoni, HEAT TRANSMISSION ELEMENTS, Editorial VESCHI;
Cavallini, L. Mattarolo, APPLIED TERMODYNAMICS, CLEUP Publisher;
F. Kreith, PRINCIPLES OF HEAT TRANSMISSION, Liguori Editore;
Paolo Vercesi, TECHNICAL PHYSICS - EXERCISES FOR THE FACULTY OF ARCHITECTURE, 150 solved exercises dedicated to the Technical Physics courses of the faculties of architecture, PRINTING LAMPS 2010
G. Starace, G, Colangelo, TECHNICAL PHYSICS - 120 problems developed and proposed, Mc Graw Hill 2012
M. A. Corticelli, ELEMENTS OF TECHNICAL PHYSICS FOR ENGINEERING, Mc Graw Hill, 2011
U. Wienke, ARIA, CALORE, LUCE - THE ENVIRONMENTAL COMFORT IN THE BUILDINGS, DEI, Rome;