60
Environmental Technical Physics
REGGIO DI CALABRIA
Overview
Date/time interval
Syllabus
Course Objectives
In order to achieve the expected goals, the course, divided into the different activities, pursues the following specific training objectives:
- Acquisition of capacity to solve conversion problems on the different forms of energy with particular regard to thermal and mechanical energy;
- Study of the most common applications of building physics, for the analysis of the thermal behaviour of building envelope elements, through the acquisition of the laws governing the mechanisms of heat transfer in steady state;
- Acquisition of the knowledge necessary for the identification of solutions for the improvement of the energy performance of buildings, according to current legislation.
- Acquisition of knowledge on the fundamental and applicative aspects of thermodynamics and heat transfer, also with reference to the theme of environmental sustainability.
- Acquisition of knowledge regarding the building physics of the building for the design applications envisaged in the subsequent teaching laboratories, as a support to the selection process of envelope components and integrated technical systems, based on the new international strategies oriented towards the objectives of decarbonization and energy efficiency
In detail, the course is aimed at providing the students with the following:
1. Knowledge and understanding (Dublin descriptor 1)
The student will acquire specific theoretical, methodological and operational knowledge in the field of Technical Physics. He will be able to understand the complex relationships that energy conversion processes in the building sector.
2. Ability to apply knowledge and understanding (Dublin descriptor 2)
The student will acquire the ability to:
- analyze the problems of conversion between the different forms of energy with particular regard to the presence of the thermal form;
- describe the thermodynamic systems and the most significant transformations used in the application of heat transfer processes;
- analyze the main mechanisms of heat transfer in order to solve some simple cases of heat exchange;
- evaluate the general aspects concerning thermo-hygrometric comfort;
- apply the physical principles to real cases and then integrate them into the choice of techniques to create building products of high thermophysical quality.
3.Making judgements (Dublin descriptor 3)
The acquisition of the proposed investigation methods will allow the student to address the problems related to the calculation of the energy performance of buildings, formulate evaluations on the effectiveness of design solutions and suggest energy saving solutions for buildings.
4. Communication skills (Dublin descriptor 4)
The methods of carrying out the course and those of the final exam are aimed at promoting the student's communication skills towards an external user, consisting of private and institutional stakeholders.
5.Learning skills (Dublin descriptor 5)
Acquisition of technical skills in application of the basic knowledge of previous courses. Acquisition of terminologies, languages, numerical and descriptive methodologies, in order to:
1. provide the student with the basic knowledge to analyze the problems of conversion between the different forms of energy with particular regard to the presence of thermal energy;
2. describe the thermodynamic systems and the most significant transformations used in the application of the aforementioned processes;
3. provide the student with the methodological approach for the analysis of the main mechanisms of heat transfer in order to solve some simple cases of heat transfer;
4. To provide the student with the basic knowledge to deal with problems related to the improvement of energy performance and the methods of investigation for energy analysis, according to current legislation.
Course Prerequisites
No entry requirements
Teaching Methods
TYPES OF TRAINING ACTIVITIES
Hours of lectures (10 hours = 1 credit):
Lectures (hours/year in classroom): 36
Practical exercises (hours/year in the classroom): 24
Guided exercises outside class hours (hours/year in the classroom): 10
CALENDAR OF TRAINING ACTIVITIES
Weeks 1-3: Introduction, Fundamentals of Thermodynamics, Energy, Power, and Energy Systems
Week 4: First law of thermodynamics
Week 5: First law exercises of thermodynamics and thermodynamic cycles
Week 6: Second Law of Thermodynamics
Week 7: Exercises according to the law of thermodynamics
Week 8: Heat Transfer
Week 9: Heat transfer exercises
Week 10: Thermo-hygrometric analysis of the envelope elements
Week 11: Exercises thermo-hygrometric analysis of the envelope elements
Week 12: Renewable energy sources
STUDENT AUTONOMOUS STUDY
1 cfu=25 hours (10 hours frontal/15 by the student*)
- The student's self-employment will consist of the following activities (90 hours):
- study and in-depth study of textbooks of theoretical and applied topics covered during lectures;
- carrying out the exercises assigned by the teacher relating to the program carried out
- exam preparation
Assessment Methods
Only students who have reached an attendance rate of at least 70% (Art. 14 of the Teaching Regulations) will be able to access the exams.
Learning will be assessed through a single exam, in which the student will be asked:
-To carry out one or more exercises related to the program carried out during the course
-To argue about the contents of the program carried out during the course.
For students who obtain an insufficient result or withdraw during the test, the teacher will evaluate whether they will be able to take the exam again in the same session or will have to attend only starting from the next session.
It will be given according to the following scale of judgment:
Excellent 30 - 30 laude: Excellent knowledge of the topics, excellent language property, good analytical ability, the student is able to apply the knowledge to solve the proposed problems.
Very good 26 - 29: Good command of the topics, full ownership of language, the student is able to apply the knowledge to solve the proposed problems.
Good 24 - 25: Basic knowledge of the main topics, fair language ownership, with limited ability to independently apply knowledge to the solution of the proposed problems.
Satisfactory 21 – 23: Not fully mastered the main topics of the course but possesses the knowledge, satisfactory language properties, poor ability to independently apply the knowledge acquired.
Sufficient 18 – 20: Minimum basic knowledge of the main topics of the course and of the technical language, very little or no ability to independently apply the knowledge acquired.
Insufficient: Will not have an acceptable knowledge of the contents of the topics covered in the course.
Texts
TEACHING MATERIALS
Suggested books
Yunus A. Çengel, Giuliano Dall'O', Luca Sarto "Environmental Technical Physics " McGraw-Hill.
Yunus A. Çengel "Thermodynamics and Heat Transmission" McGraw-Hill.
Contents
LEARNING GOALS
The discipline Building Physics and Building Energy Systems aims to provide the students with the fundamentals for the implementation of design techniques aimed at energy and environmental sustainability. The course is aimed at acquiring the fundamentals of Building Physics concerning the applications of the indoor environment.
COURSE PROGRAM
In detail, the discipline will address the following topics:
INTRODUCTION
Climate and energy. Energy sustainability and low-energy buildings. Introduction to Thermodynamics. Fundamental concepts: Physical quantities, units of measurement and measurement systems, conversion factors. Dimensional analysis.
FUNDAMENTAL CONCEPTS OF THERMODYNAMICS
Definition of thermodynamic system, boundary surface and environment. Closed and open, isolated and non-isolated systems. Specific thermodynamic (temperature, pressure, volume), extensive and intensive properties. Thermodynamic transformations and equilibrium states of a system Definition of heat, work, internal energy, potential energy and kinetic energy. Application problems on the topics covered.
FIRST LAW OF THERMODYNAMICS
Energy analysis of closed systems, energy balances, definition of the First Law of Thermodynamics and application to closed systems in steady state. First Law applied to fundamental transformations (isochore, isobar and isotherm). Definition of enthalpy, definition of heat capacity and specific heat. Equation of state of perfect gases. Work of an isothermal transformation. Pure substances. Phases of substances: cohesion energy and kinetic energy. State diagrams for phase change transformations. Application problems on the topics covered.
SECOND LAW OF THERMODYNAMICS
Definition of thermal machine and refrigerating machine. Efficiency of a thermal engine. COP of a refrigerating machine. Kelvin-Planck and Clausius statements. Definition of Entropy.
HEAT TRANSFER
Introduction, principles, methods. Thermal conduction in steady-state and one-dimensional regime. Fourier equation. Thermal conductivity, insulating and conductive materials. Thermal resistance to conduction, thermal conductance. Insulating materials. Convection: Newton's law, coefficient of convection, forced convection, natural convection. Thermal radiation. Combined heat exchange through a multilayer wall. Overall thermal resistance and thermal transmittance of the wall. Internal and external adduction.
THERMO-HYGROMETRIC ANALYSIS OF ENVELOPE ELEMENTS
Foundamental on humid air and psychrometrics, partial vapor pressure and saturation pressure. Properties of humid air: relative humidity, specific humidity, dew temperature, specific enthalpy. Psychrometric diagram.
Surface and interstitial condensation in the walls. Thermo-hygrometric analysis of building envelope elements. Surface and interstitial thermo-hygrometric verification. Vapour permeability of materials and vapour resistance of a wall. Glaser diagram. Resolution of application problems.
NOTES ON THE PRODUCTION OF ENERGY FROM RENEWABLE SOURCES IN BUILDINGS
Decarbonisation, energy transition and European reference policies. Solar energy and photovoltaic systems, wind energy, geothermal energy, biomass.
More information
No further information