AIMS AND CONTENT

LEARNING OUTCOMES

The main objective of the course are: -To provide an advanced knowledge of the main principles of heat transfer; -To study heat transfer phenomena involved in applications and processes of interest for the mechanical engineering; -To illustrate the principles of heat transfer design of processes and components.

AIMS AND LEARNING OUTCOMES

On successful completion of this module, students should demonstrate:

• Knowledge and understanding of the heat transfer equations, including their application to complex problems, also in case of on combined heat transfer mechanisms;
• Ability to propose solutions to limit/enhance heat transfer in complex systems;
• Ability to select the most suitable numerical or analytical method for the solution of the heat transfer equations (dimensionless formulation, numerical methods).

TEACHING METHODS

Lectures

SYLLABUS/CONTENT

HEAT CONDUCTION: General heat conduction equation; boundary and initial conditions; the thermal resistance concept; critical radius of insulation; heat transfer from finned surfaces; lumped system analysis; transient heat conduction in semi-infinite solids; finite difference formulation of differential equations in heat conduction.

HEAT CONVECTION: Fundamentals and preliminary analysis; conservation of mass equation; conservation of momentum equations: newtonian fluids and Navier-Stokes equations; conservation of energy equation; dimensionless forced convection equations and similarity; analogies between momentum and heat transfer; turbulence; Blasius solutions of convection equations for a flat plate; forced convection in tubes; natural convection: Boussinesq assumption; dimensionless natural convection equations.

THERMAL RADIATION: Fundamentals; blackbody and gray surfaces radiation; radiation heat transfer: black surfaces and diffuse, gray surfaces.

TWO-PHASE HEAT TRANSFER: Fundamentals of pool and flow boiling; Nusselt equation for condensation.

This unit contributes to the achievement of the following Sustainable Development Goals of the UN 2030 Agenda: 4. Quality Education, 7. Clean and Affordable Energy.

RECOMMENDED READING/BIBLIOGRAPHY

• Y. Cengel. Heat and Mass Transfer, Ed. McGrawHill, 2015.

• Incropera, DeWitt, Bergman, Lavine: Fundamentals of Heat and Mass Transfer, John Wiley and Sons, 2011
• A.Bejan, Heat Transfer, John Wiley and Sons, Inc, 1993

TEACHERS AND EXAM BOARD

Exam Board

ANDREA CATTANEI (President)

MATTEO DELLACASAGRANDE

ANTONELLA PRIARONE (President Substitute)

MARCO FOSSA (Substitute)

LESSONS

LESSONS START

https://corsi.unige.it/en/corsi/9269

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

Oral examinitaion

ASSESSMENT METHODS

The oral examination in based on a specific topic among those presented during the course, with in addition a couple of short questions on other one/two subjects.

The aim of the examination is to assess the student knowledge and the skill in reasoning and subject presentation.

Students with learning disorders ("Disturbi Specifici di Apprendimento", DSA) will be allowed to use specific modalities and supports that will be determined on a case-by-case basis in agreement with the delegate of the Engineering courses in the Committee for the Inclusion of Students with Disabilities.

Exam schedule