Credits: 5

Schedule: 08.01.2019 - 09.04.2019

Contact information for the course (applies in this implementation): 

Teacher in charge: Ari Seppälä (



Assistant: Aleksi Barsk (

- excersises

- homework problems

Teaching Period (valid 01.08.2018-31.07.2020): 


Learning Outcomes (valid 01.08.2018-31.07.2020): 

After the course the student has knowledge of the fundamental theory of the mass transfer and understands its essential physical and chemical phenomena and concepts. The student can apply the theory for analysis, and modelling of various mass transfer processes and phenomena in technology and nature.

Content (valid 01.08.2018-31.07.2020): 

Fundamentals of diffusion in gas phase, liquid phase and in porous materials. Stefan flow and Knudsen's diffusion in micropores. Differential equations of mass transfer. Derivation of general analogy between heat and mass transfer. Forced and natural convection mass transfer. Membrane transport. Applications to heat recovery, cooling systems, drying and separation with membranes.

Details on the course content (applies in this implementation): 


• Mixture basics (Lecture 1)
• Diffusion (Lectures 1-2)
• Advection + diffusion = convection (Lecture 2)
• ”Self-induced” convection: Stefan flow,
natural/free convection (Lectures 2-3)
• Analogy between heat and mass transfer (Lecture 3)
• Mass
transfer correlations and coefficients (Lecture 3)
• Coupled heat and mass transfer (Lecture 4)
• Mass
transfer in porous/solid materials (Lectures 5-6)
     o concentration and pressure difference driven flows in porous materials, capillary flow and surface tension, osmosis and reverse osmosis,
        membrane transport, mass transfer in micro- and nanostrucutures


• Moisture movement and condensing of water vapor in building wall structures
• Enhanced cooling with wet surface heat exchangers
• Drying of porous material

Assessment Methods and Criteria (valid 01.08.2018-31.07.2020): 

Written examination, exercise problems and 3-4 assignments.

Elaboration of the evaluation criteria and methods, and acquainting students with the evaluation (applies in this implementation): 

5 homework problems (one problem in each of the exercise no. 2-6),  1/6=17% of course points

3 large assignments, 33% of  course points

Exam, 50% of course points

Workload (valid 01.08.2018-31.07.2020): 

Lectures 14 h
Exercises 14 h

Assignments 50 h

Independent work 51 h
Examination 4 h

Study Material (valid 01.08.2018-31.07.2020): 

Seppälä, Lampinen: Aineensiirto-oppi. Otatieto 604,

Cussler, E.L.: Diffusion Mass Transfer in Fluid Systems. 2 nd ed. Cambridge Univ. Press (suitable parts).

Additional literature will be given during the course. Lecture notes.

Details on the course materials (applies in this implementation): 

- Electric copy of text book Aineensiirto-oppi/Mass Transfer.  Finnish and English versions are available at MyCourses
     Removed topics: chapters 6.1,
11.1, 11.3, 11.4, 12


- Lecture slides

- Solutions of excercise problems
(note! the solutions of the homework problems will be given only during the excercises)

Substitutes for Courses (valid 01.08.2018-31.07.2020): 

Ene-39.4027 Mass Transfer

Prerequisites (valid 01.08.2018-31.07.2020): 

Basic principles of heat transfer and chemical thermodynamics. E.g. EEN-E1030 Heat Transfer and EEN-E1040 Thermodynamics in Energy Technology or similar courses.

Grading Scale (valid 01.08.2018-31.07.2020): 


Registration for Courses (valid 01.08.2018-31.07.2020): 


Details on the schedule (applies in this implementation): 

6 lectures   (8.1, 22.1,
29.1, 12.2, 26.2,12.3)

6 excercise lessons (18.1, 25.1, 1.2, 15.2, 1.3., 15.3)

Deadlines for the homework problems: beginning of each excercise
Deadlines of the assignments: to be announced later


Registration and further information