# APPLIED PHYSICS

iten
Code
60356
2020/2021
CREDITS
12 credits during the 2nd year of 8715 Civil and Environmental Engineering (L-7) GENOVA
SCIENTIFIC DISCIPLINARY SECTOR
ING-IND/11
LANGUAGE
Italian
TEACHING LOCATION
GENOVA (Civil and Environmental Engineering)
Prerequisites
Prerequisites
You can take the exam for this unit if you passed the following exam(s):
• Civil and Environmental Engineering 8715 (coorte 2019/2020)
• GENERAL PHYSICS 56686
• GEOMETRY 56721
• MATHEMATICAL ANALYSIS I 72290
modules
This unit is composed by:
Teaching materials

## OVERVIEW

The course aims to provide elements of engineering thermodynamics for the analysis of energy processes and of associated environmental issues.
Psychrometry and heat transfer are introduced and the relevant physical mechanisms are described.
Basic elements of acoustics and lighting are lastly given to the students.

## AIMS AND CONTENT

LEARNING OUTCOMES

Solution of simple energy problems. Evaluation of the effectiveness of direct and reverse cycles. Thermal and psychrometric calculations. Calculations concerning most air and air conditioning. Elementary issues in acoustics and lighting.

TEACHING METHODS

Solution of simple energy problems. Evaluation of the effectiveness of direct and reverse cycles. Thermal and psychrometric calculations. Calculations concerning most air and air conditioning. Elementary issues in acoustics and lighting.

SYLLABUS/CONTENT

ENVIRONMENTAL ENGINEERING PHYSICS

Engineering thermodynamics: Introduction to energy issue: renewable and not renewable resources, energy needs and availability, environmental impacts. Energy transfer by heat. Energy transfer by work. State functions. Thermodynamic transformations. Ideal gas law and gas mixtures. Internal energy. First law of thermodynamics. Energy balance for control volumes. Second law of thermodynamics. Reversible and irreversible processes. Entropy. Pure substance. Thermodynamic planes: (p, T), (p,v), (T,S) (H, S), (p, H). Carnot theorem and cycle (direct and reverse). Energy conversion efficiency. Brayton cycle. Rankine cycle. Internal combustion cycles. Refrigeration cycle. Reverse cycle machines: refrigerator and heat pump. Refrigerants. Coefficient of performance. Absorption refrigeration system.
Heat transfer: Mechanisms of heat transfer. Thermal conduction. Fourier equation. Mono-dimensional problems. Thermal resistance. Transient thermal conduction. Forced convection. General principles and boundary layer. Dimensionless groups. Internal and external convection. Forced convention correlations. Natural convection. Forced and natural convention correlations. Radiative heat transfer. Black body. Planck’s and Wien’s laws. Emissivity and absorptivity. Legge di Kirchoff. Gray body. View factors. Lambert law. Radiation in black cavities. Radiation in gray cavities. Combined mechanisms of heat transfer. Overall heat transfer coefficient. Heat transfer in buildings.

TECHNICAL PLANTS

Psychrometrics: Thermodynamics of moist air. Psychometric functions and their relations. Fundamental transformations of moist air. Psychrometric diagrams. Psychrometric measurements. Surface and interstitial condensation. Thermohygrometric comfort. Buildings energy and mass balance. Air conditioning plants. Summer air conditioning. Winter air conditioning.
Applied acoustics: Wave-equation for sound propagation. Sound levels. Sound spectra. Sound propagation outdoors. Reflection, diffraction, refraction. Sound propagation in rooms. Acoustic reverberation. Conventional reverberation time.
Lighting: Fundamentals: luminous intensity, illuminance, luminance, flow. Sources of artificial light. Solid photometric. Illumination of a point by point source. Design of a maximum of lighting inside. Method of the utilization factor. Natural lighting method of the average daylight factor

• M. J. Moran, N. H. Shapiro “Fundamental of Engineering Thermodynamics”, John Wiley & sons, Inc.1988
• Yunus A. Cengel: “Termodinamica e trasmissione del Calore”, Mc Graw Hill, 1998
• C. Pisoni, G. Guglielmini “ Introduzione alla Trasmissione del Calore” Ed. CEA, 2001.
• F. Kreith, "Principi di trasmissione del calore", Liguori Editore, 1975.
• K.P. Incropera , D. P. DeWitt, T. L. Bergman, S. Lavine, ”Introduction to Heat Transfer”, Wiley, 2006.
• D. DiLaura, K.Houser, R. Mistrick, G. Steffy, IES Lighting Handbooh (Application Volume) – 10th Edition, 2014.
• G. Guglielmini, E. Nannei, C. Pisoni, “Problemi di Termodinamica Tecnica e trasmissione del Calore”, ECIG, 1993.
• IES Lighting Handbook (Application Volume), 1987
• F. A. Everest, Manuale di acustica, Hoepli, 1996.
• Lecture notes by the lecturer (Lecture notes are available on Aulaweb)

## TEACHERS AND EXAM BOARD

Office hours: Friday 11-13 Other dates by appointment to be arranged with the teacher

Office hours: By appointment to be agreed with the teacher.

Exam Board

ANNALISA MARCHITTO

DAVIDE BORELLI (President Substitute)

PAOLO CAVALLETTI (President Substitute)

## LESSONS

TEACHING METHODS

Solution of simple energy problems. Evaluation of the effectiveness of direct and reverse cycles. Thermal and psychrometric calculations. Calculations concerning most air and air conditioning. Elementary issues in acoustics and lighting.

LESSONS START

19th of September

Class schedule

All class schedules are posted on the EasyAcademy portal.

## EXAMS

EXAM DESCRIPTION

Written test and oral questions about each general topic.
The exam consists of an oral part (ref. official calendar) by the students who attended lectures and class exercises, and who filled in the questionnaire for the quality of teaching. The oral test is preceded by a written test, aiming to verify an adequate level of knowledge for the solution of simple problems. Subjects of the written test are Engineering Thermodynamics, Heat Transfer, Psychrometry and A/C plants. The judgment is Positive or Negative;a student who does not pass the written test is recommended not to sit for the oral test. The validity of a positive written test is limited to the period between two following written examinations.  Attendance at lectures and other forms of activities is mandatory and is awarded by students who have attended at least 70% of the teaching activity.

Exam schedule

Date Time Location Type Notes
07/01/2021 10:00 GENOVA Scritto
07/01/2021 10:00 GENOVA Scritto
15/01/2021 09:30 GENOVA Orale
29/01/2021 09:30 GENOVA Orale
04/02/2021 10:00 GENOVA Scritto
11/03/2021 10:00 GENOVA Scritto
19/03/2021 15:00 GENOVA Scritto
16/04/2021 15:00 GENOVA Orale
03/06/2021 10:00 GENOVA Scritto
11/06/2021 09:30 GENOVA Orale
01/07/2021 10:00 GENOVA Scritto
08/07/2021 09:30 GENOVA Orale 1
26/07/2021 09:30 GENOVA Orale
09/09/2021 10:00 GENOVA Scritto
07/01/2021 10:00 GENOVA Scritto
07/01/2021 10:00 GENOVA Scritto
15/01/2021 09:30 GENOVA Orale
29/01/2021 09:30 GENOVA Orale
04/02/2021 10:00 GENOVA Scritto
11/03/2021 10:00 GENOVA Scritto
19/03/2021 15:00 GENOVA Scritto
16/04/2021 15:00 GENOVA Orale
03/06/2021 10:00 GENOVA Scritto
11/06/2021 09:30 GENOVA Orale
01/07/2021 10:00 GENOVA Scritto
08/07/2021 09:30 GENOVA Orale 1
26/07/2021 09:30 GENOVA Orale
09/09/2021 10:00 GENOVA Scritto

FURTHER INFORMATION

No formal prerequisites. Students are recommended to pass before the exams in Analisi Matematica 1, Geometria and Fisica Generale.