MJ1401 Heat Transfer 6.0 credits
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Application
For course offering
Autumn 2024 Start 28 Oct 2024 programme students
Application code
50538
Content and learning outcomes
Course contents
One-dimensional cases at stationary conditions.
Differential equations for heat conduction in solid materials.
Solutions for different special cases. Fin efficiency for different fin designs
Two and three-dimensional cases at stationary conditions.
Laplace's equation. The form factor. Numerical solution methods and analogy methods.
Non-stationary cases. Solutions for flat surfaces and cylinders
Superposition of elementary cases. The ”Lumped heat capacity” method
Numerical solution methods.
Convection, radiation, boiling, condensation and heat exchangers
Velocity and temperature boundary layers.
Theoretical treatment of flow over a flat plate at laminar and turbulent flow.
Reynold's analogy between heat transfer and pressure drop.
Empirical relationships for heat transfer at induced flow
Laminar and turbulent flow in pipes and ducts. Flow around bodies
Velocity profiles and entrance regions Hydraulic diameter
Heat transfer at free convection, Grashof number, boundary layer equations in integral form with solutions for free convection at vertical plates
Empirical relationships for laminar and turbulent boundary layers at vertical and horizontal plates, cylinders and slots
Heat transfer at radiation
The "black body" concept. Emission and absorption numbers. Radiant efficiency, angular factor.
Heat transfer in falling films
Heat transfer at condensation
Nusselt's theory, condensation on and in horizontal pipes
Heat transfer at boiling
Various types of boiling, the boiling curve
Pool boiling, cooking in pipes and ducts
Heat exchangers
Different types, logarithmic mean temperature difference, temperature effectiveness, NTU
Intended learning outcomes
To give an understanding of how the heat transfer takes place, be able to analyse a real heat transfer problem, identify, explain and compare different heat transfer phenomena and discuss heat transports in general. It implies that the student can apply theory from the course to analyse real heat transfer problems.
After the course, the students should be able to:
Identify, formulate, model and solve problems for different heat transfer mechanisms, as well as design devices with heat exchange.
Literature and preparations
Specific prerequisites
The course MJ1112 Applied thermodynamics or the equivalent
Recommended prerequisites
Equipment
Literature
Yunus A. Cengel; Afshin J. Ghajar; Heat and Mass Transfer, Fundamentals and applications; Mc Graw Hill companies.
Examination and completion
If the course is discontinued, students may request to be examined during the following two academic years.
Grading scale
Examination
- LAB2 - Laboratory work, 0.5 credits, grading scale: P, F
- TEN2 - Written exam, 5.5 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.
Examination consists of five comprehensive arithmetical problems. During the course, three quizzes that give bonus points on the examination are given. Bonus points received for quizzes during one academic year are valid throughout that academic year (regular and re-examination).
Language of instruction: Swedish and English
Lectures: Swedish
Exercises: English or Swedish (depending on the assigned teacher)
Reading list: English
Lab exercise instructions and lab exercises: English
Quizzes and written examination: English
Other requirements for final grade
A written examination (TEN1; 5.5 credits) with arithmetical problems. For final mark, passed Labs are required (LAB1; 0.5 credits). Three quizzes are organised, whose result may be included at examination. Passed quizzes give bonus points on examination.
Opportunity to complete the requirements via supplementary examination
Opportunity to raise an approved grade via renewed examination
Examiner
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.