Unit PHYSICS TECHNIQUE
- Course
- Mechanical engineering
- Study-unit Code
- 70091209
- Curriculum
- In all curricula
- Teacher
- Cinzia Buratti
- Teachers
-
- Cinzia Buratti
- Hours
- 81 ore - Cinzia Buratti
- CFU
- 9
- Course Regulation
- Coorte 2022
- Offered
- 2023/24
- Learning activities
- Caratterizzante
- Area
- Ingegneria energetica
- Academic discipline
- ING-IND/10
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- Italian
- Contents
- The course of Applied (Technique) Physics offers students teaching units aimed at learning the basic principles of classical thermodynamics, hydraulic machines, thermal machines and the related thermodynamic cycles, the modes of heat transfer and related applications in the mechanical field. The course also proposes the study of the main types of air conditioning systems, and the conditions that can give the indoor thermo-hygrometric well-being of the occupants. Finally, the main theoretical aspects relating to acoustics and lighting technology will be addressed.
- Reference texts
- • Mauro Felli, Lezioni di Fisica Tecnica I, Termodinamica, macchine, impianti
a cura di Francesco Asdrubali, Ed. Morlacchi
• Mauro Felli, Lezioni di Fisica Tecnica II, Trasmissione del calore, Acustica, Tecnica dell'Illuminazione, a cura di Federico Rossi, Ed. Morlacchi.
• Handouts by the teacher - Educational objectives
- The course of Applied (Technique) Physics combines theoretical knowledge concerning thermodynamics, machines, acoustics and lighting technology and the related practical skills consisting in the ability to evaluate the main environmental phenomena of heat transfer, acoustic wave and light in the life environments.
The main objective of the course is to provide learners with theoretical knowledge and practical skills for the analysis of these phenomena and the recognition of the effects they cause on human health.
The main acquired knowledge (Dublin Descriptor 1) will be:
- theory of thermodynamics and heat transfer
- theory of thermal machines and their thermodynamic cycles
- theory and technique of air conditioning
- theory and phenomenology of the internal and external microclimate of buildings
- basic elements of the different environmental phenomenologies and their effects on human health
- techniques of acoustic analysis and lighting in interiors and exteriors of buildings.
The main acquired skills (ability to apply the acquired knowledge, Dublin Descriptor 2, and to adopt with appropriate judgment the appropriate approach, Dublin Descriptor 3) will be:
- evaluate the principles of thermodynamics and the related application consequences
- analyze the main heat exchange mechanisms
- analyze the thermal machines and their thermodynamic cycles
- assess the quality of the internal environments and their microclimatic characteristics
- evaluate the characteristics and the main acoustic and lighting engineering parameters and their effect on human health. - Prerequisites
- As for recommended preparatory courses
- Teaching methods
- The course is divided into:
1) Theoretical lessons
2) Application exercises - Other information
- Frequency: Recommended
Location: Department of Engineering
Calendar of teaching activities: Check the Department website ing.unipg.it - Learning verification modality
- The exam will be divided into 4 written questions, 2 of which are general and 2 specifics. Later, an oral final test.
- Extended program
- Training units:
1) Applied thermodynamics
Measurement units of the international system. Thermodynamic quantities. Closed and open thermodynamic systems. State quantities. Phase rule. Clapeyron diagram P-v. Principles of thermodynamics. Zero principle and concept of temperature (thermal equilibrium). First law and conservation of energy. Machines. Efficiency. Second principle and quality of energy. Entropy. Entropic diagram T-s. Enthalpy. Exergy.
Thermal machines and their energy and exergy efficiency. Mechanical components and technology. Construction of thermodynamic transformations on T-s and P-v diagrams. Otto, Diesel, Brayton, Rankine, Rankine-Hirn, Reverse Rankine cycles. Compression and absorption refrigeration machines. Air conditioning.
Psychrometric quantities: specific humidity, relative humidity, dew point temperature and wet bulb temperature. Measurement equipment: psychrometer. Psychrometric diagram. Air treatments: summer treatment and winter treatment of humid air in an all-air system. Description of an air conditioning system.
2) Heat transfer
Heat transfer modes. Conduction. Convection. Radiation. Adduction. Thermal insulating materials. Application examples in the civil field (single-layer wall, multi-layer walls, wall with and without internal heat development, glass walls). Application examples in the industrial field (pipe insulation, heat exchangers, cooling fin).
3) Lighting technology
Visual well-being. Photometric quantities. Lighting project: objectives. Principles of street lighting. Lighting design for enclosed spaces: total flux method. Principles of point-to-point method. Natural lighting: average daylight factor. Measurement equipment: luxmeter and luminance meter.
4) Acoustics
Acoustic quantities and relative levels. Acoustic spectrums. Frequency bands: octaves and thirds of an octave. Sound propagation. Reverberation. Absorption, reflection and transmission for acoustic energy. Sound absorption: porous sound absorbing panels, absorbing resonant perforated panels and vibrating panels. Soundproofing: sound insulation index and mass law. Sound and noise. Qualitative aspects of auditory sensation. Evaluation indices of noise annoyance. “A” weighted sound pressure level LpA(t). Normal audiogram. "A" weighting curve. A-weighted equivalent continuous sound level LAeq,T. Elements of psychoacoustics: effects of noise on humans, shift of the audibility threshold. Measurement equipment: sound level meter. Legislation and technical regulations. - Obiettivi Agenda 2030 per lo sviluppo sostenibile
- The aims of this course contribute to the realization of goals n.4, 7 and 11 of the UN Agenda 2020 for Sustainable Development.