OVERVIEW

Heat transfer is a branch of thermodynamics whose aim is to study the laws of propagation of thermal energy. The role of heat transfer is crucial in the correct design of electric/electronic devices; its study is deemed to be of great importance in the preparation of students in electrical engineering.

AIMS AND CONTENT

LEARNING OUTCOMES

In this course, heat transfer mechanisms (conduction, convection and radiation) will be presented and discussed, with particular reference to electronic and electric systems, such as electronic equipment cooling. Heat transfer processes will be first described from the theoretical point of view; then several practical calculation examples will be provided. Students are expected to acquire the ability of facing and solving heat transfer problems in the field of electronic/electric systems.

AIMS AND LEARNING OUTCOMES

This course is aimed at providing the basic knowledge, from the theoretical (heat transfer laws) and practical (problem solving) standpoints, with particular reference to thermal control and cooling of electric/electronic components.  At the end of the course, the student is expected to face and solve basic heat transfer problems, with particular reference to electronic equipment cooling.

PREREQUISITES

Italian students are advised to have successfully passed the exams of Analisi 1 + Geometria,  Fisica Generale and Fisica Tecnica before applying for the exam of Trasmissione del Calore

TEACHING METHODS

The time-schedule of the course is five/six hours per week (second semester only)

SYLLABUS/CONTENT

Introduction: thermal problems in electric/electronic systems

Conduction heat transfer: Fourier postulate, 1D and 3D conduction equation in plane and cylindrical coordinates. Contact resistance. Thermal-electrical analogy. Thermal transmittance. Transient conduction. Numerical techniques. Practical examples.

Convection heat transfer: Newton equation, external and internal boundary layer. Forced and free convection. The heat transfer coefficient: correlations among nondimensional groups; practical examples. Phase changes (condensation and vaporization)

Radiation heat transfer: Stefan-Boltzmann law. Black and gray surfaces, radiant heat transfer among black and gray surfaces; practical examples.

Conventional and compact heat exchangers. Thermal analysis and design.

Electric/electronic equipment cooling: conduction, contact resistances, air and liquid convection, finned surfaces, immersion cooling, heat pipes.

Thermometry foundations. Infrared thermal imaging for hot spot identification in electric systems and plants. Measurement principles and applications

RECOMMENDED READING/BIBLIOGRAPHY

G.Tanda: “Dispense del Corso Trasmissione del Calore per l’ingegneria elettrica”, http://www.aulaweb.unige.it.

F.Kreith: " Principles of Heat Transfer", 7th Ed.

Exercises:

G.Guglielmini, E.Nannei, C.Pisoni: "Problemi di Termodinamica Tecnica e Trasmissione del Calore", ECIG, Genova.

TEACHERS AND EXAM BOARD

Exam Board

GIOVANNI TANDA (President)

MARCO FOSSA

GUGLIELMO LOMONACO

ANNALISA MARCHITTO

MARIO MISALE (President Substitute)

LESSONS

LESSONS START

https://corsi.unige.it/8716/p/studenti-orario

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

Examination: oral. Examination dates are scheduled according to the official calendar.

Students who have valid certification of physical or learning disabilities on file with the University and who wish to discuss possible accommodations or other circumstances regarding lectures, coursework and exams, should speak both with the instructor and with Professor Federico Scarpa (federico.scarpa@unige.it ), the School's disability liaison.

ASSESSMENT METHODS

Oral examination, based on a specific subject among those tackled during the taught course, with in addition a couple of small synthetic questions on other one/two subjects.

The aim of the examination is to assess the capability of solving specific thermal problems (including physical formulation and mathematical passages) and the skill in discussing and arguing them.

Exam schedule

FURTHER INFORMATION

Please see updates in Aulaweb - DITEN - Heat Transfer