HEAT TRANSFER IN ELECTRONIC SYSTEMS
Academic year and teacher
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- Versione italiana
- Academic year
- 2022/2023
- Teacher
- STEFANO PIVA
- Credits
- 6
- Didactic period
- Primo Semestre
- SSD
- ING-IND/10
Training objectives
- The course introduces the fundamentals and physics of thermodynamics and heat transfer. It then shows how to apply this information to the design and testing of electronic and other hardware.
Prerequisites
- Basic knowledge of physics (energy, power, work, etc.).
Basic knowledge of mathematics (integral, derivative, differential equations etc.). Course programme
- 1 Elements of applied thermodynamics.
2 Elements of fluid flow: Mass conservation, Momentum conservation.
3 Basic information on heat transfer.
4 Conduction: Fourier's law, equation of Fourier (sd), equivalent thermal resistance.
5 Convection: Forced and natural convection: correlations to calculate the Nusselt number.
6 Thermal radiation: Definitions: emissive power and intensity of radiation, black body, gray body, Greenhouse effect, power exchanged by radiation, view factors.
7 The overall heat transfer coefficient.
8 Finned surfaces.
9 Conservation of mechanical energy.
10 Pressure losses.
11 Pumps and Fans (axial and radial).
12 The point of operation of a ventilation system.
13 Velocity and mass flow measurement.
14 General information on the cooling of electronic system.
15 The junction temperature.
16 The cooling of electronic systems for natural convection.
17 The cooling of electronic systems for forced convection.
18 The thermal frames and circuit boards.
19 Elements of liquid cooling. Didactic methods
- Traditional theoretical lectures and examples of numerical applications.
Learning assessment procedures
- At the end of the course an oral final examination is done. The topics are those discussed during the course.
Passing the final exam is the proof that knowledge and abilities outlined in the training objectives of the course have been achieved.
Two questions, the first one on the topics 1-7, the second one on the topics 8-19. It is necessary to obtain a minimum of 18/30 for each question; on the contrary it will be necessary to repeat the whole examination. Reference texts
- A text will be distributed by the teacher to the presents.
Chapter 19 of the book: Y. A. Cengel, Termodinamica e trasmissione del calore, McGraw-Hill.
