Skip to main content

MJ2425 Cooling of Electronics 6.0 credits

Course offerings are missing for current or upcoming semesters.
Headings with content from the Course syllabus MJ2425 (Autumn 2011–) are denoted with an asterisk ( )

Content and learning outcomes

Course contents

A brief repetition of the basics of refrigeration. Characterization of electronic components. The cooling efficiency concept, the air efficiency method for choice of fans. The thermal territory method for placing of components on circuit boards. Optimization of fin distances. Design of heat sinks in open geometries. Approximation of contact resistances. Liquid cooling in one-phase and two-phase. Orientation about commercial calculation tools (FEM- and CFD-programmes).

Intended learning outcomes

The aim of the course is to give knowledge concerning cooling problems in electric and electronic systems, as well as knowledge about methods for thermal design of such systems.

After this course the student should be able to:

  • describe, and assess cooling problems in electric and electronic systems
  • perform thermal design work using methods such as:
    – compact models of electronic components
    – the air efficiency method for selection of fans
    – the thermal territory method
  • design heat sinks, and assess the impact of flow bypass
  • describe and apply different compact models for characterization of components
  • describe different liquid cooling techniques and assess their capability and applicability
  • assess the capability and applicability of different commercial calculation tools.

Literature and preparations

Specific prerequisites

MJ1401 Heat transfer and SG1220 Fluid mechanics for engineers or SG1217 Fluid Mechanics Basic Course, or equivalent courses

Recommended prerequisites

No information inserted


No information inserted


Mälhammar, Å.: Thermal design for Electronics, 2003
Palm, B.:Short notes on heat transfer


Examination and completion

If the course is discontinued, students may request to be examined during the following two academic years.

Grading scale

A, B, C, D, E, FX, F


  • LAB1 - Laboratory Work, - credits, grading scale: P, F
  • PRO1 - Project, 1.5 credits, grading scale: P, F
  • TEN1 - Examination, 4.5 credits, grading scale: A, B, C, D, E, FX, F

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

Other requirements for final grade

Written exam (TEN1; 4,5 cr)
Student project (SEM1; 1,5 cr
Lab work (LAB; 0 cr)

Opportunity to complete the requirements via supplementary examination

No information inserted

Opportunity to raise an approved grade via renewed examination

No information inserted


Ethical approach

  • All members of a group are responsible for the group's work.
  • In any assessment, every student shall honestly disclose any help received and sources used.
  • In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Further information

Course room in Canvas

Registered students find further information about the implementation of the course in the course room in Canvas. A link to the course room can be found under the tab Studies in the Personal menu at the start of the course.

Offered by

Main field of study

Mechanical Engineering

Education cycle

Second cycle

Add-on studies

No information inserted


Hans Havtun, e-mail

Supplementary information

 Replaces 4A1625